JP5098461B2 - Thermoplastic resin composition and molded article thereof - Google Patents

Description

  The present invention relates to a thermoplastic resin composition and a molded article comprising the same, and more particularly to a thermoplastic resin composition having a highly balanced fluidity, impact resistance and mechanical properties, and a molded article comprising the same. is there.

  Thermoplastic resins, especially engineering plastics having excellent mechanical properties and thermal properties, are used in various applications by taking advantage of their excellent properties. Polyamide resin, which is a kind of engineering plastic, has a good balance between mechanical properties and toughness. Therefore, it is used for various electrical and electronic parts, mechanical parts and automobile parts mainly for injection molding. Polybutylene terephthalate (hereinafter referred to as PBT Is widely used as a material for industrial molded products such as connectors, relays, switches and the like of automobiles and electrical / electronic devices, taking advantage of moldability, heat resistance, mechanical properties and chemical resistance.

However, in recent years, improvement in fluidity has been demanded as a material to be used in order to cope with the reduction in thickness of molded products accompanying the modularization and weight reduction of large automobile parts. On the other hand, it is known that the fluidity is improved by mixing a liquid crystalline resin with a thermoplastic resin, and various studies have been made so far. Patent Documents 1 to 4 describe a resin composition using a hyperbranched polymer, which has a certain degree of fluidity improvement effect, but the improvement effect is not sufficient, and the mechanical properties are reduced along with the fluidity improvement. Therefore, the development of a better fluidization method is required.
International Publication No. 2005/75563 (Claims) International Publication No. 2005/75565 (Claims) International Publication No. 2006/42705 (Claims) European Patent No. 142360 (claim)

  An object of the present invention is to provide a thermoplastic resin composition in which fluidity, impact resistance, and mechanical properties are highly balanced, and a molded article comprising the same.

  The present invention employs the following means as a result of intensive studies to solve the above problems.

That is, the present invention
1. 1 to 100 parts by weight of the impact resistance improver (b), and the aromatic oxycarbonyl unit (S), aromatic and / or aliphatic dioxy unit (T), and 100 parts by weight of the thermoplastic resin (a) , At least one structural unit selected from aromatic dicarbonyl units (U) and a trifunctional or higher functional organic residue (D), and each of S, T and U is represented by the following formula (1): At least one structural unit selected from the structural units in which the content of D is in the range of 7.5 to 50 mol% with respect to the total monomers constituting the dendritic polyester, and exhibits molten liquid crystallinity. A thermoplastic resin composition comprising 0.01 to 30 parts by weight of a dendritic polyester resin (c).

(Here, R1, R2 and R3 are each at least one structural unit selected from structural units represented by the following formula.)

(Wherein, Y is at least one selected from a hydrogen atom, a halogen atom and an alkyl group. In the formula, n is an integer of 2 to 8.)
2 . The dendritic polyester resin (c) is a thermoplastic resin composition 1 Symbol mounting, characterized in that it contains a basic skeleton represented by the formula (2).

(Here, D is an organic residue of a trifunctional compound, and DD is bonded directly by an ester bond and / or an amide bond, or bonded via a structural unit selected from S, T and U. Yes.)
3 . 3. The thermoplastic resin composition according to 1 or 2, wherein the dendritic polyester resin (c) contains a basic skeleton represented by the following formula (3).

(Here, D is an organic residue of a tetrafunctional compound, and DD is bonded directly by an ester bond and / or an amide bond or via a structural unit selected from S, T and U. Yes.)
4 . The thermoplastic resin composition according to any one of 1 to 3 , wherein the organic residue represented by D of the dendritic polyester resin (c) is a structural unit derived from an aromatic compound.
5 . 5. The thermoplastic resin composition according to 4, wherein the organic residue represented by D of the dendritic polyester resin (c) is an organic residue represented by the following formula (4).

6 . The thermoplastic resin composition according to any one of 1 to 5 , wherein the impact resistance improving material (b) is an olefin resin.
7 . The impact resistance improving material (b) is at least one selected from an ethylene / α-olefin copolymer or an ethylene / α, β-unsaturated carboxylic acid ester copolymer modified with an unsaturated carboxylic acid or a derivative thereof. The thermoplastic resin composition according to any one of 1 to 6 , which is characterized in that it exists.
8 . The thermoplastic resin composition according to any one of 1 to 7 , wherein the thermoplastic resin (a) is a polyamide resin.
9 . A molded article obtained by melt-molding the thermoplastic resin composition according to any one of 1 to 8 .
10 . 10. The molded article according to 9 , wherein the melt molding is any one selected from injection molding, injection compression molding, and compression molding. It is.

  According to the present invention, it is possible to provide a thermoplastic resin composition excellent in fluidity and highly balanced in mechanical properties and impact resistance. The thermoplastic resin composition of the present invention has excellent surface appearance (color tone), impact resistance, and mechanical properties by a molding method such as normal injection molding, injection compression molding, compression molding, extrusion molding, and press molding. It can be processed into molded articles, sheets, pipes, films, fibers and the like.

  The thermoplastic resin (a) used in the present invention may be any resin that can be melt-molded. For example, acrylic resin such as polyethylene resin, polypropylene resin, polymethylpentene resin, cyclic olefin resin, polymethyl methacrylate, etc. Resin, acrylonitrile / butanediene / styrene (ABS) resin, acrylonitrile / styrene (AS) resin, cellulose resin such as cellulose acetate, non-liquid crystalline polyester resin such as polyethylene terephthalate resin and polybutylene terephthalate resin, polyamide resin, polyacetal resin, Polycarbonate resin, polyphenylene ether resin, polyarylate resin, polysulfone resin, polyphenylene sulfide resin, polyethersulfone resin, polyetheretherketone resin, polyimide Such butter and polyetherimide resin. These may be used singly or in combination. Of these, polyamide resins, non-liquid crystalline polyester resins, polyacetal resins, and polycarbonate resins are preferable, and polyamide resins are more preferable in terms of heat resistance, moldability, fluidity, and mechanical properties. These may be used alone or in combination of two or more as a polymer alloy.

  In the present invention, preferred polyamide resins are polyamides mainly composed of amino acids, lactams or diamines and dicarboxylic acids. Representative examples of the main constituents include amino acids such as 6-aminocaproic acid, 11-aminoundecanoic acid, 12-aminododecanoic acid and paraaminomethylbenzoic acid, lactams such as ε-caprolactam and ω-laurolactam, pentamethylenediamine , Hexamethylenediamine, 2-methylpentamethylenediamine, nonamethylenediamine, undecamethylenediamine, dodecamethylenediamine, 2,2,4- / 2,4,4-trimethylhexamethylenediamine, 5-methylnonamethylenediamine, Metaxylylenediamine, paraxylylenediamine, 1,3-bis (aminomethyl) cyclohexane, 1,4-bis (aminomethyl) cyclohexane, 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane, Bis (4-aminosi Chlohexyl) methane, bis (3-methyl-4-aminocyclohexyl) methane, 2,2-bis (4-aminocyclohexyl) propane, bis (aminopropyl) piperazine, aminoethylpiperazine, aliphatic, alicyclic, aromatic Diamines, and adipic acid, speric acid, azelaic acid, sebacic acid, dodecanedioic acid, terephthalic acid, isophthalic acid, 2-chloroterephthalic acid, 2-methylterephthalic acid, 5-methylisophthalic acid, 5-sodium sulfoisophthalic acid Examples include aliphatic, alicyclic, and aromatic dicarboxylic acids such as acids, 2,6-naphthalenedicarboxylic acid, hexahydroterephthalic acid, and hexahydroisophthalic acid. In the present invention, nylon derived from these raw materials Homopolymers or copolymers, each alone or in the form of a mixture It can be used.

  In the present invention, a particularly useful polyamide resin is a polyamide resin having a melting point of 150 ° C. or more and excellent in heat resistance and strength. Specific examples include polycaproamide (nylon 6), polyhexamethylene adipamide. (Nylon 66), polypentamethylene adipamide (nylon 56), polyhexamethylene sebamide (nylon 610), polyhexamethylene dodecane (nylon 612), polyundecanamide (nylon 11), polydodecanamide (nylon) 12), polycaproamide / polyhexamethylene adipamide copolymer (nylon 6/66), polycaproamide / polyhexamethylene terephthalamide copolymer (nylon 6 / 6T), polyhexamethylene adipamide / polyhexamethylene terephthalamide Copolymer (Nai 66 / 6T), polyhexamethylene adipamide / polyhexamethylene isophthalamide copolymer (nylon 66 / 6I), polyhexamethylene terephthalamide / polyhexamethylene isophthalamide copolymer (nylon 6T / 6I), polyhexamethylene terephthalamide / Polydodecanamide copolymer (nylon 6T / 12), polyhexamethylene adipamide / polyhexamethylene terephthalamide / polyhexamethylene isophthalamide copolymer (nylon 66 / 6T / 6I), polyxylylene adipamide (nylon XD6) Polyhexamethylene terephthalamide / poly-2-methylpentamethylene terephthalamide copolymer (nylon 6T / M5T), polynonamethylene terephthalamide (nylon 9T) and Mixtures of al and the like.

  Among these, preferable polyamide resins include nylon 6, nylon 66, nylon 12, nylon 610, nylon 6/66 copolymer, nylon 6T / 66 copolymer, nylon 6T / 6I copolymer, nylon 6T / 12, nylon 6T / 6 copolymer, and the like. The copolymer which has the hexamethyl terephthalamide unit of this can be mentioned, Especially preferably, nylon 6 can be mentioned. Furthermore, it is also practically preferable to use these polyamide resins as a mixture depending on necessary properties such as impact resistance and molding processability.

  The degree of polymerization of these polyamide resins is not particularly limited, but the relative viscosity measured at 25 ° C. in a 98% concentrated sulfuric acid solution having a sample concentration of 0.01 g / ml is in the range of 1.5 to 7.0. Particularly preferred is a polyamide resin in the range of 2.0 to 6.0.

  Moreover, a copper compound is preferably used in the polyamide resin of the present invention in order to improve long-term heat resistance. Specific examples of copper compounds include cuprous chloride, cupric chloride, cuprous bromide, cupric bromide, cuprous iodide, cupric iodide, cupric sulfate, nitric acid. Cupric, copper phosphate, cuprous acetate, cupric acetate, cupric salicylate, cupric stearate, cupric benzoate and inorganic copper halides and xylylenediamine, 2-mercaptobenzimidazole And complex compounds such as benzimidazole. Of these, monovalent copper compounds, particularly monovalent copper halide compounds are preferred, and cuprous acetate, cuprous iodide, and the like can be exemplified as particularly suitable copper compounds. The addition amount of the copper compound is usually preferably 0.01 to 2 parts by weight and more preferably 0.015 to 1 part by weight with respect to 100 parts by weight of the polyamide resin. If the amount added is too large, liberation of metallic copper occurs during melt molding, and the value of the product is reduced by coloring. In the present invention, an alkali halide can be added in combination with a copper compound. Examples of the alkali halide compound include lithium chloride, lithium bromide, lithium iodide, potassium chloride, potassium bromide, potassium iodide, sodium bromide and sodium iodide. Sodium chloride is particularly preferred.

  The preferred non-liquid crystalline polyester resin in the present invention is a polymer having an ester bond in the main chain and not exhibiting melt liquid crystallinity. Derivatives, (ro) hydroxycarboxylic acids or ester-forming derivatives thereof, and (c) polymers or copolymers having one or more selected from lactones as main structural units.

  Examples of the dicarboxylic acid or ester-forming derivative thereof include terephthalic acid, isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, bis (p-carboxyphenyl) methane, anthracene dicarboxylic acid, Aromatic dicarboxylic acids such as 4,4'-diphenyl ether dicarboxylic acid, 5-tetrabutylphosphonium isophthalic acid, 5-sodium sulfoisophthalic acid, oxalic acid, succinic acid, adipic acid, sebacic acid, azelaic acid, dodecanedioic acid, malon Examples thereof include aliphatic dicarboxylic acids such as acid, glutaric acid and dimer acid, alicyclic dicarboxylic acids such as 1,3-cyclohexanedicarboxylic acid and 1,4-cyclohexanedicarboxylic acid, and ester-forming derivatives thereof.

  Examples of the diol or ester-forming derivatives thereof include aliphatic glycols having 2 to 20 carbon atoms, that is, ethylene glycol, propylene glycol, 1,4-butanediol, neopentyl glycol, 1,5-pentanediol, 1, Aroma such as 6-hexanediol, decamethylene glycol, cyclohexanedimethanol, cyclohexanediol, dimer diol or the like, or a long chain glycol having a molecular weight of 200 to 100,000, that is, polyethylene glycol, poly-1,3-propylene glycol, polytetramethylene glycol, etc. Group dioxy compounds, namely 4,4′-dihydroxybiphenyl, hydroquinone, t-butylhydroquinone, bisphenol A, bisphenol S, bisphenol F and these And ester forming derivatives thereof.

  Polymers or copolymers containing dicarboxylic acid or its ester-forming derivative and diol or its ester-forming derivative as structural units include polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, polycyclohexanedimethylene terephthalate, polyhexylene terephthalate. , Polyethylene isophthalate, polypropylene isophthalate, polybutylene isophthalate, polycyclohexanedimethylene isophthalate, polyhexylene isophthalate, polyethylene naphthalate, polypropylene naphthalate, polybutylene naphthalate, polyethylene isophthalate / terephthalate, polypropylene isophthalate / Terephthalate, polybutylene isophthalate / terephthalate, poly Tylene terephthalate / naphthalate, polypropylene terephthalate / naphthalate, polybutylene terephthalate / naphthalate, polybutylene terephthalate / decane dicarboxylate, polyethylene terephthalate / cyclohexanedimethylene terephthalate, polyethylene terephthalate / 5-sodium sulfoisophthalate, polypropylene terephthalate / 5-sodium sulfo Isophthalate, polybutylene terephthalate / 5-sodium sulfoisophthalate, polyethylene terephthalate / polyethylene glycol, polypropylene terephthalate / polyethylene glycol, polybutylene terephthalate / polyethylene glycol, polyethylene terephthalate / polytetramethylene glycol, polypropylene Terephthalate / polytetramethylene glycol, polybutylene terephthalate / polytetramethylene glycol, polyethylene terephthalate / isophthalate / polytetramethylene glycol, polypropylene terephthalate / isophthalate / polytetramethylene glycol, polybutylene terephthalate / isophthalate / polytetramethylene glycol , Polyethylene terephthalate / succinate, polypropylene terephthalate / succinate, polybutylene terephthalate / succinate, polyethylene terephthalate / adipate, polypropylene terephthalate / adipate, polybutylene terephthalate / adipate, polyethylene terephthalate / sebacate, polypropylene terephthalate / sebacate, poly Fragrances such as butylene terephthalate / sebacate, polyethylene terephthalate / isophthalate / adipate, polypropylene terephthalate / isophthalate / adipate, polybutylene terephthalate / isophthalate / succinate, polybutylene terephthalate / isophthalate / adipate, polybutylene terephthalate / isophthalate / sebacate Group polyester resin, polyethylene oxalate, polypropylene oxalate, polybutylene oxalate, polyethylene succinate, polypropylene succinate, polybutylene succinate, polyethylene adipate, polypropylene adipate, polybutylene adipate, polyneopentyl glycol adipate, polyethylene sebacate, Polypropylene Sebakei , Polybutylene sebacate, polyethylene succinate / adipate, polypropylene succinate / adipate, aliphatic polyester resins such as polybutylene succinate / adipate and the like.

  Examples of the hydroxycarboxylic acid include glycolic acid, lactic acid, hydroxypropionic acid, hydroxybutyric acid, hydroxyvaleric acid, hydroxycaproic acid, hydroxybenzoic acid, p-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, and these Examples of the polymer or copolymer having these as a structural unit include polyglycolic acid, polylactic acid, polyglycolic acid / lactic acid, polyhydroxybutyric acid / β-hydroxybutyric acid / β-hydroxyyoshide. Aliphatic polyester resins such as herbic acid can be mentioned.

  Examples of the lactone include caprolactone, valerolactone, propiolactone, undecalactone, 1,5-oxepan-2-one, and the polymer or copolymer having these as structural units includes polycaprolactone. , Polyvalerolactone, polypropiolactone, polycaprolactone / valerolactone, and the like.

  Among these, a polymer or copolymer having a main structural unit of dicarboxylic acid or its ester-forming derivative and diol or its ester-forming derivative is preferable, and aromatic dicarboxylic acid or its ester-forming derivative and aliphatic diol. Alternatively, a polymer or copolymer having an ester-forming derivative as a main structural unit is more preferable, and an aliphatic diol selected from terephthalic acid or an ester-forming derivative thereof and ethylene glycol, propylene glycol, or butanediol or an ester-forming property thereof. A polymer or copolymer having a derivative as a main structural unit is more preferable, among which polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, polycyclohexanedimethylene terephthalate, polyethylene naphthalate. Aromatic polyester resins such as polypropylene naphthalate, polybutylene naphthalate, polyethylene isophthalate / terephthalate, polypropylene isophthalate / terephthalate, polybutylene isophthalate / terephthalate, polyethylene terephthalate / naphthalate, polypropylene terephthalate / naphthalate, polybutylene terephthalate / naphthalate Are particularly preferred, and polybutylene terephthalate is most preferred.

  In the present invention, the ratio of terephthalic acid or its ester-forming derivative to the total dicarboxylic acid in the polymer or copolymer having the dicarboxylic acid or its ester-forming derivative and diol or its ester-forming derivative as the main structural unit is It is preferably 30 mol% or more, and more preferably 40 mol% or more.

  In the present invention, it is preferable to use two or more kinds of polyester resins in terms of hydrolysis resistance.

  The amount of carboxyl end groups of the non-liquid crystalline polyester resin used in the present invention is not particularly limited, but is preferably 50 eq / t or less, and preferably 30 eq / t or less in terms of hydrolysis resistance and heat resistance. More preferably, it is 20 eq / t or less, more preferably 10 eq / t or less. The lower limit is 0 eq / t. In the present invention, the amount of carboxyl end groups of the non-liquid crystalline polyester resin is a value measured by dissolving in o-cresol / chloroform solvent and titrating with ethanolic potassium hydroxide.

  The vinyl end group amount of the non-liquid crystalline polyester resin used in the present invention is not particularly limited, but is preferably 15 eq / t or less, more preferably 10 eq / t or less, in terms of color tone, and 5 eq / t. More preferably, it is as follows. The lower limit is 0 eq / t. In the present invention, the vinyl end group amount of the non-liquid crystalline polyester resin is a value measured by 1H-NMR using a deuterated hexafluoroisopropanol solvent.

  The amount of hydroxyl terminal groups of the non-liquid crystalline polyester resin used in the present invention is not particularly limited, but is preferably 50 eq / t or more, more preferably 80 eq / t or more, and 100 eq / t in terms of moldability. t is more preferably t or more, and particularly preferably 120 eq / t or more. The upper limit is not particularly limited, but is 180 eq / t. In the present invention, the non-liquid crystalline polyester resin is a value measured by 1H-NMR using a deuterated hexafluoroisopropanol solvent.

  The viscosity of the non-liquid crystalline polyester resin used in the present invention is not particularly limited, but the intrinsic viscosity when the o-chlorophenol solution is measured at 25 ° C. is preferably in the range of 0.36 to 1.60 dl / g. More preferably, it is in the range of 0.50 to 1.25 dl / g.

  The molecular weight of the non-liquid crystalline polyester resin used in the present invention is preferably in the range of 50,000 to 500,000, more preferably in the range of 100,000 to 300,000 in terms of heat resistance. The range of 150,000 to 250,000 is more preferable.

  The production method of the non-liquid crystalline polyester resin used in the present invention is not particularly limited and can be produced by a known polycondensation method or ring-opening polymerization method, and may be either batch polymerization or continuous polymerization. In addition, any of transesterification and direct polymerization reactions can be applied, but the amount of carboxyl end groups can be reduced, and the effect of improving fluidity and hydrolysis resistance is increased. Continuous polymerization is preferred, and direct polymerization is preferred in terms of cost.

  When the non-liquid crystalline polyester resin used in the present invention is a polymer or copolymer obtained by a condensation reaction mainly comprising a dicarboxylic acid or an ester-forming derivative thereof and a diol or an ester-forming derivative thereof The dicarboxylic acid or its ester-forming derivative and the diol or its ester-forming derivative can be produced by an esterification reaction or a transesterification reaction and then a polycondensation reaction. In order to effectively advance the esterification reaction or transesterification reaction and the polycondensation reaction, it is preferable to add a polymerization reaction catalyst during these reactions. Specific examples of the polymerization reaction catalyst include methyl ester of titanic acid, Organic titanium such as tetra-n-propyl ester, tetra-n-butyl ester, tetraisopropyl ester, tetraisobutyl ester, tetra-tert-butyl ester, cyclohexyl ester, phenyl ester, benzyl ester, tolyl ester, or mixed esters thereof Compound, dibutyltin oxide, methylphenyltin oxide, tetraethyltin, hexaethylditin oxide, cyclohexahexylditin oxide, didodecyltin oxide, triethyltin hydroxide, Riphenyltin hydroxide, triisobutyltin acetate, dibutyltin diacetate, diphenyltin dilaurate, monobutyltin trichloride, dibutyltin dichloride, tributyltin chloride, dibutyltin sulfide and butylhydroxytin oxide, methylstannic acid, ethylstannic acid, butylstannon Examples include tin compounds such as alkylstannic acids such as acids, zirconia compounds such as zirconium tetra-n-butoxide, antimony compounds such as antimony trioxide and antimony acetate, and among these, organic titanium compounds and tin compounds include Further, titanic acid tetra-n-propyl ester, tetra-n-butyl ester and tetraisopropyl ester are preferred. Properly, tetra -n- butyl ester of titanic acid is especially preferred. These polymerization reaction catalysts may be used alone or in combination of two or more. The addition amount of the polymerization reaction catalyst is preferably in the range of 0.005 to 0.5 parts by weight with respect to 100 parts by weight of the non-liquid crystalline polyester resin in terms of mechanical properties, moldability and color tone, and 0.01 to 0 The range of 2 parts by weight is more preferred.

  The impact resistance improving material (b) used in the present invention is not limited as long as it improves impact resistance by melt-kneading with the thermoplastic resin (a), and is not limited to olefin resin, acrylic rubber, silicone type. The so-called core-shell type is composed of rubber, fluorine-based rubber, urethane-based rubber, polyamide elastomer, polyester elastomer, and at least one layer composed of these rubbery components and one or more layers composed of a different polymer. A multilayer structure can be exemplified. The number of layers constituting the multilayer structure may be two or more, and may be three or more or four or more. The multilayer structure having one or more rubber layers (core layers) inside. It is preferable that The type of the rubber layer of the multilayer structure is not particularly limited as long as it is composed of a polymer component having rubber elasticity. For example, an acrylic component, a silicone component, a styrene component, a nitrile component, a conjugate Examples of the rubber include rubbers obtained by polymerizing a diene component, a urethane component, an ethylene component, a propylene component, an isobutene component, and the like. The type of layer other than the rubber layer of the multilayer structure is not particularly limited as long as it is composed of a polymer component having thermoplasticity, but it is a polymer component having a glass transition temperature higher than that of the rubber layer. Preferably there is. Polymers having thermoplastic properties include unsaturated carboxylic acid alkyl ester units, unsaturated carboxylic acid units, unsaturated glycidyl group-containing units, unsaturated dicarboxylic anhydride units, aliphatic vinyl units, aromatic vinyl units, cyanide. Examples thereof include polymers containing one or more units selected from vinyl units, maleimide units, unsaturated dicarboxylic acid units, and other vinyl units.

  Of these, olefin resins are preferably used. The olefin resin is a thermoplastic resin obtained by polymerizing or copolymerizing olefin monomers such as ethylene, propylene, butene, isoprene and pentene. Specific examples include homopolymers and copolymers such as polyethylene, polypropylene, polystyrene, poly 1-butene, poly 1-pentene, polymethyl pentene, ethylene / α-olefin copolymers, ethylene / α, β-non-polymers. Hydrolyze at least part of saturated carboxylic acid ester copolymer, α-olefin / α, β-unsaturated carboxylic acid ester copolymer, [copolymer of (ethylene and / or propylene) and vinyl alcohol ester] Polyolefin obtained as above, [copolymer of (ethylene and / or propylene) and (unsaturated carboxylic acid and / or unsaturated carboxylic acid ester)], [(ethylene and / or propylene) and (unsaturated carboxylic acid) And / or copolymer with unsaturated carboxylic acid ester)] Polyolefins also be obtained by partially with metal chlorides, block copolymers of a conjugated diene and a vinyl aromatic hydrocarbon, and, hydrides of the block copolymer. Of these, ethylene / α-olefin copolymers and ethylene / α, β-unsaturated carboxylic acid ester copolymers are preferred.

  The ethylene / α-olefin copolymer referred to in the present invention is a copolymer of ethylene and at least one kind of α-olefin having 3 to 20 carbon atoms, and the above α-olefin having 3 to 20 carbon atoms. Specifically, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene, 1-dodecene, 1-tridecene, 1 -Tetradecene, 1-pentadecene, 1-hexadecene, 1-heptadecene, 1-octadecene, 1-nonadecene, 1-eicosene, 3-methyl-1-butene, 3-methyl-1-pentene, 3-ethyl-1-pentene 4-methyl-1-pentene, 4-methyl-1-hexene, 4,4-dimethyl-1-hexene, 4,4-dimethyl-1-pentene, 4-ethyl-1- Hexene, 3-ethyl-1-hexene, 9-methyl-1-decene, 11-methyl-1-dodecene, 12-ethyl-1-tetradecene and combinations thereof. Among these α-olefins, a copolymer using an α-olefin having 3 to 12 carbon atoms is preferable from the viewpoint of improving mechanical strength, and particularly preferably, compatibility is further improved and impact resistance is improved as described later. From the viewpoint of being extremely excellent, it is a copolymer using ethylene modified with at least one compound selected from unsaturated carboxylic acids or derivatives thereof and an α-olefin having 3 to 12 carbon atoms. The α-olefin content of the ethylene / α-olefin copolymer is preferably 1 to 30 mol%, more preferably 2 to 25 mol%, still more preferably 3 to 20 mol%. Further, non-conjugated dienes such as 1,4-hexadiene, dicyclopentadiene, 2,5-norbornadiene, 5-ethylidene norbornene, 5-ethyl-2,5-norbornadiene, 5- (1′-propenyl) -2-norbornene, etc. At least one kind may be copolymerized.

  The ethylene / α, β-unsaturated carboxylic acid ester copolymer referred to in the present invention is a polymer obtained by copolymerizing ethylene and an α, β-unsaturated carboxylic acid ester. Examples of saturated carboxylic acid esters include esters of α, β-unsaturated carboxylic acids such as methyl acrylate, ethyl acrylate, butyl acrylate, glycidyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, and glycidyl methacrylate. Can be mentioned. Specific examples of the ethylene / α, β-unsaturated carboxylic acid ester copolymer include ethylene / methyl acrylate copolymer, ethylene / ethyl acrylate copolymer, ethylene / butyl acrylate copolymer, ethylene / methacrylic acid. Methyl acid copolymer, ethylene / ethyl methacrylate copolymer, ethylene / butyl methacrylate copolymer, ethylene / glycidyl methacrylate copolymer, ethylene / glycidyl acrylate copolymer, ethylene / glycidyl methacrylate copolymer , Ethylene / methyl acrylate / glycidyl methacrylate copolymer, and ethylene / methyl methacrylate / glycidyl methacrylate copolymer. Of these, ethylene / glycidyl methacrylate copolymer, ethylene / methyl acrylate / glycidyl methacrylate copolymer, and ethylene / methyl methacrylate / glycidyl methacrylate copolymer are preferably used.

  In the present invention, the polyolefin resin may be modified with at least one compound selected from unsaturated carboxylic acids or derivatives thereof. By using the polyolefin-based resin thus modified, the compatibility is further improved and the impact resistance is extremely excellent. Examples of compounds selected from unsaturated carboxylic acids, acid anhydrides or derivatives thereof used as modifiers include acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, methylmaleic acid , Methyl fumaric acid, mesaconic acid, citraconic acid, glutaconic acid and metal salts of these carboxylic acids, methyl hydrogen maleate, methyl hydrogen itaconate, methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, acrylic acid Hydroxyethyl, methyl methacrylate, 2-ethylhexyl methacrylate, hydroxyethyl methacrylate, aminoethyl methacrylate, dimethyl maleate, dimethyl itaconate, maleic anhydride, itaconic anhydride, citraconic anhydride, endobicyclo- (2, 2 1) -5-heptene-2,3-dicarboxylic acid, endobicyclo- (2,2,1) -5-heptene-2,3-dicarboxylic anhydride, maleimide, N-ethylmaleimide, N-butylmaleimide, N-phenylmaleimide, glycidyl acrylate, glycidyl methacrylate, glycidyl ethacrylate, glycidyl itaconate, glycidyl citraconic acid, and 5-norbornene-2,3-dicarboxylic acid. Among these, unsaturated dicarboxylic acids and acid anhydrides that are derivatives thereof are preferable, and maleic acid and maleic anhydride are particularly preferable.

  The method for introducing these functional group-containing components into the polyolefin-based resin is not particularly limited, and may be a copolymer of at least one compound selected from an olefin monomer as a main component and an unsaturated carboxylic acid or a derivative thereof in advance, A method of grafting at least one compound selected from an unsaturated carboxylic acid or a derivative thereof into an unmodified polyolefin resin using a radical initiator can be used. The introduction amount of at least one compound selected from unsaturated carboxylic acids or derivatives thereof is preferably 0.001 to 40 mol%, more preferably 0.01 to 35, based on the total olefin monomer of the polyolefin resin. It is suitable to be in the range of mol%.

  The addition amount of the impact resistance improving material (b) in the thermoplastic resin composition of the present invention is 1 to 100 parts by weight with respect to 100 parts by weight of the thermoplastic resin (a). When the amount added is less than 1 part by weight, there is no sufficient impact resistance improving effect, and when it exceeds 100 parts by weight, thickening occurs and molding processability is lowered, which is not preferable. A preferable addition amount is 5 to 80 parts by weight, particularly preferably 10 to 70 parts by weight.

The dendritic polyester resin (c) of the present invention is at least one selected from the group consisting of an aromatic oxycarbonyl unit (S), an aromatic and / or aliphatic dioxy unit (T), and an aromatic dicarbonyl unit (U). A dendritic structure containing a structural unit and a trifunctional or higher functional organic residue (D) and having a D content in the range of 7.5 to 50 mol% with respect to all monomers constituting the dendritic polyester Polyester resin.

Here, the aromatic oxycarbonyl unit (S), the aromatic and / or aliphatic dioxy unit (T), and the aromatic dicarbonyl unit (U) are structural units represented by the following formula (1), respectively. Oh Ru.

R1, R2 and R3 is at least one or more structural units selected from structural units represented, respectively Re its under formula.

  In the formula, Y is at least one selected from a hydrogen atom, a halogen atom and an alkyl group. Here, the alkyl group is preferably an alkyl group having 1 to 4 carbon atoms. In the formula, n is an integer of 2 to 8.

  In the dendritic polyester of the present invention, the trifunctional or higher functional organic residue (D) is directly bonded to each other by an ester bond and / or an amide bond, or through a structural unit selected from S, T and U which are branch structure parts. The basic skeleton is a branched structure of three or more branches connected together. The branched structure may be formed of a single basic skeleton such as three branches and four branches, or a plurality of basic skeletons such as three branches and four branches may coexist. It is not necessary for all of the polymers to consist of the basic skeleton, and other structures may be included at the ends, for example, for end capping. When D is a trifunctional organic residue, the dendritic polyester has a structure in which all three functional groups of D have reacted, a structure in which only two have reacted, and 1 A structure that reacts with only one may be mixed. Preferably, the structure in which all three functional groups of D are reacted is preferably 15 mol% or more, more preferably 20 mol% or more, and further preferably 30 mol% or more with respect to the entire D. Further, when D is a tetrafunctional organic residue, the dendritic polyester has a structure in which all four functional groups of D are reacted, a structure in which only three are reacted, two A structure in which only one reacts and a structure in which only one reacts may be mixed. Preferably, the structure in which all four functional groups of D have reacted is preferably 10 mol% or more and the structure in which three functional groups have reacted with respect to the entire D is preferably 20 mol% or more, more preferably four functional groups. The structure in which is reacted is 20 mol% or more with respect to the entire D and the structure in which three functional groups are reacted is 30 mol% or more with respect to the entire D, and more preferably the structure in which four functional groups are reacted is the entire D The structure in which three functional groups have reacted with each other at 25 mol% or more is 35 mol% or more with respect to the entire D.

  D is preferably an organic residue of a trifunctional compound and / or a tetrafunctional compound, and most preferably an organic residue of a trifunctional compound.

  The above three-branch basic skeleton is schematically represented by the formula (2). Further, the above four-branch basic skeleton is schematically represented by the formula (3).

Dendritic polyesters of the present invention, shows the liquid crystalline. The term “showing molten liquid crystallinity” means that the liquid crystal state is exhibited in a certain temperature range when the temperature is raised from room temperature. The liquid crystal state is a state showing optical anisotropy under shear.

  In order to exhibit molten liquid crystallinity, the basic skeleton in the case of three branches is composed of a structural unit in which the organic residue (D) is selected from S, T and U as shown in the following formula (5) It is preferable that they are bonded via the branch structure portion R.

  Similarly, the basic skeleton in the case of four branches is preferably a structure represented by the following formula (6).

  Although it does not specifically limit about the trifunctional organic residue represented by D, It is preferable that it is an organic residue of the compound containing the functional group chosen from a carboxyl group, a hydroxyl group, and an amino group. For example, those derived from aliphatic compounds such as glycerol, methylolpropane, tricarballylic acid, diaminopropanol, diaminopropionic acid, trimesic acid, trimellitic acid, 4-hydroxy-1,2-benzenedicarboxylic acid, phloroglucinol, α- Those derived from aromatic compounds such as resorcinic acid, β-resorcinic acid, γ-resorcinic acid, tricarboxynaphthalene, dihydroxynaphthoic acid, aminophthalic acid, 5-aminoisophthalic acid, aminoterephthalic acid, diaminobenzoic acid, melamine, cyanuric acid Can be mentioned. Among these, those derived from aromatic compounds are preferred, and those represented by the following formula (4) are more preferred. Specifically, those derived from trimesic acid and α-resorcylic acid are preferred, and those derived from trimesic acid are particularly preferred.

  Further, the tetrafunctional or higher functional organic residue D is preferably an organic residue of a compound containing a functional group selected from a carboxyl group, a hydroxyl group and an amino group. For example, erythritol, pentaerythritol, threitol, xylitol, glucitol, mannitol, 1,2,3,4-butanetetracarboxylic acid, 1,2,4,5-cyclohexanetetraol, 1,2,3,4,5- Cyclohexanepentaneol, 1,2,3,4,5,6-cyclohexanehexaneol, 1,2,4,5-cyclohexanetetracarboxylic acid, 1,2,3,4,5-cyclohexanepentacarboxylic acid, 1, Residues of aliphatic compounds such as 2,3,4,5,6-cyclohexanehexacarboxylic acid, citric acid, tartaric acid, 1,2,4,5-benzenetetraol, 1,2,3,4- Benzenetetraol, 1,2,3,5-benzenetetraol, 1,2,3,4,5-benzenepentaneol, 1,2,3,4,5, -Benzenehexaneol, 2,2 ', 3,3'-tetrahydroxybiphenyl, 2,2', 4,4'-tetrahydroxybiphenyl, 3,3 ', 4,4'-tetrahydroxybiphenyl, 3, , 3 ′, 5,5′-tetrahydroxybiphenyl, 2,3,6,7-naphthalenetetraol, 1,4,5,8-naphthalenetetraol, pyromellitic acid, merophanic acid, planitic acid, meritic acid, 2,2 ′, 3,3′-biphenyltetracarboxylic acid, 2,2 ′, 4,4′-biphenyltetracarboxylic acid, 3,3 ′, 4,4′-biphenyltetracarboxylic acid, 3,3 ′, 5,5′-biphenyltetracarboxylic acid, 2,3,6,7-naphthalenetetracarboxylic acid, 1,4,5,8-naphthalenetetracarboxylic acid, 2,3,6,7-naphthaleneteto All, 1,4,5,8-naphthalenetetraol, 1,2,4,5,6,8-naphthalenehexaol, 1,2,4,5,6,8-naphthalenehexacarboxylic acid, gallic acid, etc. Of the aromatic compound. The residue represented by the following formula (7) is more preferable.

  Specific examples of the tetrafunctional organic residue of the above formula include 1,2,4,5-benzenetetraol, 1,2,3,4-benzenetetraol, 1,2,3,5. -Residues such as benzenetetraol, pyromellitic acid, merophanic acid, planitic acid and gallic acid are preferred, and residues of gallic acid are particularly preferred.

Further, the aromatic hydroxycarbonyl unit (S), aromatic and / or aliphatic dioxy unit (T), and aromatic dicarbonyl unit (U) of the dendritic polyester resin represent the branch structure portion between the branches of the dendritic polyester. It is a unit that composes. p, q, and r are the average contents (molar ratio) of the structural units S, T, and U, respectively, and it is preferable that p + q + r = 1 to 10 when the content d of D is 1 mol. More preferably, p + q + r is in the range of 2-6. If the branch length is too long, an effect such as shear responsiveness based on a rigid and detailed dendritic structure is reduced, which is not preferable. The values of p, q, and r are obtained, for example, by dissolving dendritic polyester resin in a mixed solvent of 50% by weight of pentafluorophenol and 50% by weight of chloroform and performing nuclear magnetic resonance spectrum analysis of proton nuclei at 40 ° C. It can obtain | require from the peak intensity ratio derived from each structural unit. The average content is calculated from the peak area intensity ratio of each structural unit, and the three decimal places are rounded off. The average chain length of the branch portion R is calculated from the area intensity ratio with respect to the peak corresponding to the content d of the branched structure D, and is defined as p + q + r. In this case, the three decimal places are rounded off.

  The ratio of p and q and the ratio of p and r (p / q, p / r) is preferably 5/95 to 95/5, more preferably 10/90 to 90/10, more preferably 20 / 80-80 / 20. If it is this range, liquid crystallinity is easy to express and it is preferable. By setting the ratio of p / q and p / r to 95/5 or less, the melting point of the dendritic polyester resin can be within an appropriate range, and p / q and p / r should be 5/95 or more. It is preferable because the melted liquid crystallinity of the dendritic polyester resin can be expressed.

  q and r are preferably substantially equimolar, but either component can be added in excess to control the end groups. The ratio of q / r is preferably in the range of 0.7 to 1.5, more preferably 0.9 to 1.1. Equimolar here means that the molar amount in the repeating unit is equal and does not include the terminal structure. Here, the term “end structure” means the end of the branch structure portion, and when the end is blocked, it means the end of the branch structure portion closest to the end.

  Furthermore, R1, R2, and R3 are the structural units.

  R1 is a structure derived from an aromatic oxycarbonyl unit, and examples thereof include structural units generated from p-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid, and are preferably structural units derived from p-hydroxybenzoic acid. It is also possible to use a part of those derived from 6-hydroxy-2-naphthoic acid. Further, structural units derived from aliphatic hydroxycarboxylic acids such as glycolic acid, lactic acid, hydroxypropionic acid, hydroxybutyric acid, hydroxyvaleric acid, and hydroxycaproic acid may be contained within a range not impairing the effects of the present invention.

  R2 is a structure derived from aromatic and / or aliphatic dioxy units, such as 4,4′-dihydroxybiphenyl, hydroquinone, 3,3 ′, 5,5′-tetramethyl-4,4′-dihydroxybiphenyl, t-butylhydroquinone, phenylhydroquinone, methylhydroquinone, 2,6-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, 2,2-bis (4-hydroxyphenyl) propane and 4,4′-dihydroxydiphenyl ether, ethylene glycol, 1 , 3-propylene glycol, structural units generated from 1,4-butanediol, and the like. Preferred are structural units generated from 4,4′-dihydroxybiphenyl, hydroquinone, ethylene glycol, and 4,4 ′. -Dihydroxy biphe May include the Le hydroquinone or 4,4'-dihydroxybiphenyl and a structural unit derived from ethylene glycol is preferable from the viewpoint of the control of the liquid crystal.

  R3 is a structural unit generated from an aromatic dicarbonyl unit. For example, terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, 4,4′-diphenyldicarboxylic acid, 1,2-bis (phenoxy) ethane Examples include structural units formed from -4,4'-dicarboxylic acid, 1,2-bis (2-chlorophenoxy) ethane-4,4'-dicarboxylic acid, 4,4'-diphenyl ether dicarboxylic acid, and the like. It is a structural unit formed from terephthalic acid and isophthalic acid, and particularly when both are used in combination, the melting point can be easily adjusted. A part of a structural unit generated from an aliphatic dicarboxylic acid such as sebacic acid or adipic acid may be contained.

  The branch structure portion of the dendritic polyester resin of the present invention is preferably mainly composed of a polyester skeleton, but it is also possible to introduce a carbonate structure, an amide structure, a urethane structure, etc. to such an extent that the characteristics are not greatly affected. Among them, it is preferable to introduce an amide structure. By introducing such another bond, compatibility with a wide variety of thermoplastic resins can be adjusted, which is preferable. As a method for introducing an amide bond, p-aminobenzoic acid, m-aminobenzoic acid, p-aminophenol, m-aminophenol, p-phenylenediamine, m-phenylenediamine, tetramethylenediamine pentamethylenediamine, hexamethylene Diamine, 2-methylpentamethylenediamine, nonamethylenediamine, undecamethylenediamine, dodecamethylenediamine, 2,2,4- / 2,4,4-trimethylhexamethylenediamine, 5-methylnonamethylenediamine, m-xyl Range amine, p-xylylenediamine, 1,3-bis (aminomethyl) cyclohexane, 1,4-bis (aminomethyl) cyclohexane, 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane, bis (4-Aminocyclohexyl Aliphatic, alicyclic or aromatic such as methane, bis (3-methyl-4-aminocyclohexyl) methane, 2,2-bis (4-aminocyclohexyl) propane, bis (aminopropyl) piperazine, aminoethylpiperazine It is preferable to copolymerize such an amine compound, and among them, copolymerization of p-aminophenol and p-aminobenzoic acid is preferable.

  Specific examples of the structure of R include a structural unit formed from p-hydroxybenzoic acid and a structural unit generated from 6-hydroxy-2-naphthoic acid, a structural unit generated from p-hydroxybenzoic acid, 6- A structural unit produced from hydroxy-2-naphthoic acid, a structural unit produced from 4,4′-dihydroxybiphenyl, a structure comprising a structural unit produced from terephthalic acid, a structural unit produced from p-hydroxybenzoic acid, 4,4 Structural units generated from '-dihydroxybiphenyl, structural units generated from terephthalic acid, structures composed of structural units generated from isophthalic acid, structural units generated from p-hydroxybenzoic acid, generated from 4,4'-dihydroxybiphenyl Structural unit, structural unit generated from hydroquinone, generated from terephthalic acid Structural units, structural units formed from isophthalic acid, structural units generated from p-hydroxybenzoic acid, structural units generated from ethylene glycol, structural units generated from terephthalic acid, p-hydroxybenzoic acid Structural unit generated from ethylene, structural unit generated from ethylene glycol, structural unit generated from 4,4′-dihydroxybiphenyl, structure composed of structural unit generated from terephthalic acid, structural unit generated from p-hydroxybenzoic acid, hydroquinone A structural unit generated from 4,4′-dihydroxybiphenyl, a structural unit generated from terephthalic acid, a structure consisting of a structural unit generated from 2,6-naphthalenedicarboxylic acid, generated from p-hydroxybenzoic acid Structural unit, 6-hydroxy- - structural unit derived from naphthoic acid, a structural unit derived from hydroquinone, etc. structure comprising a structural unit derived from terephthalic acid.

  Particularly preferred is R composed of the following structural units (I), (II), (III), (IV) and (V) or the following structural units (I), (II), (VI) and (IV) R).

  In the case of R composed of the structural units (I), (II), (III), (IV) and (V), the content p of the structural unit (I) is based on the total p + q + r of the structural units. It is 30 to 70%, more preferably 45 to 60%.

  Further, the content q (II) of the structural unit (II) is 60 to 75%, more preferably 65 to 73% with respect to the total q of the structural units (II) and (III). The content r (IV) of the structural unit (IV) is 60 to 92%, preferably 60 to 70%, more preferably 62 with respect to the total r of the structural units (IV) and (V). ~ 68%.

  In such a case, the shear response and the addition effect to the thermoplastic resin which are the characteristics of the present invention are remarkably exhibited, which is preferable.

  Preferably, the sum q of structural units (II) and (III) and the sum r of (IV) and (V) are substantially equimolar, but the carboxylic acid component or hydroxyl to adjust the end groups of the polymer Ingredients may be added in excess. That is, “substantially equimolar” means that the unit constituting the polymer main chain excluding the terminal is equimolar, but the unit constituting the terminal is not necessarily equimolar. Here, when the terminal is a derivative or blocked, it means the terminal of the skeleton R.

  In the case of R composed of the structural units (I), (II), (VI) and (IV), the content p of the structural unit (I) is the structural units (I), (II) and ( 30-90 mol% is preferable with respect to the sum total of VI), and 40-80 mol% is more preferable. Moreover, 70-5 mol% is preferable with respect to the sum q of (II) and (VI), and, as for content q (VI) of structural unit (VI), 60-8 mol% is more preferable. Further, the structural unit (IV) is preferably substantially equimolar to the total of the structural units (II) and (VI), but either component may be added in excess.

  The terminal of the dendritic polyester resin of the present invention is preferably a carboxyl group, a hydroxyl group, an amino group or a derivative thereof. Examples of hydroxyl derivatives or carboxylic acid derivatives include alkyl esters such as methyl esters, aromatic esters such as phenyl esters and benzyl esters, monofunctional epoxy compounds, oxazoline compounds, orthoacetate compounds, isocyanates. It is also possible to block the end using a compound, an acid anhydride compound or the like.

  The end-capping method includes adding a monofunctional organic compound in advance when synthesizing a dendritic polyester, or adding a monofunctional organic compound when a dendritic polyster skeleton is formed to some extent. Etc. are possible.

  Specifically, when blocking the hydroxyl group terminal or the acetoxy terminal, benzoic acid, 4-t-butylbenzoic acid, 3-t-butylbenzoic acid, 4-chlorobenzoic acid, 3-chlorobenzoic acid, 4 It is possible by reacting with -methylbenzoic acid, 3-methylbenzoic acid, 3,5-dimethylbenzoic acid and the like.

  When the carboxylic acid terminal is blocked, acetoxybenzene, 1-acetoxy-4-t-butylbenzene, 1-acetoxy-3-t-butylbenzene, 1-acetoxy-4-chlorobenzene, 1-acetoxy-3 It is possible by reacting with -chlorobenzene, 1-acetoxy-4-cyanobenzene and the like.

  Of the end groups that are theoretically generated, end blocking is possible by adding an organic compound used for the end blocking corresponding to the amount of the end block that is desired to be blocked. Thus, 1.005 times or more is used, more preferably 1.008 times or more, and the maximum value is 1.01 times.

  When the addition amount is small, the end-capping is not sufficient, and when the addition amount is too large, an excessive additive remains in the system to reduce the reaction rate or generate gas, which is not preferable.

  Further, the content of the organic residue D is 7.5 mol% or more, more preferably 10 mol% or more, more preferably 20 mol%, based on the content of all monomers constituting the dendritic polyester. That's it. In such a case, the chain length of the branch structure portion is preferable because the dendritic polyester is suitable for taking a dendritic form. The upper limit of the content of the organic residue D is 50 mol% or less, preferably 45 mol% or less, and more preferably 40 mol% or less. In addition, the dendritic polyester resin of the present invention may have a partially crosslinked structure as long as the properties are not affected.

  There is no restriction | limiting in particular in the manufacturing method of the said dendritic polyester resin used in this invention, It can manufacture according to the well-known polyester polycondensation method. After acylating the raw material monotonic pair constituting the structural units represented by R1, R2, and R3, when the trifunctional monomer is reacted, the addition amount (mol) of the trifunctional monomer is all charged. A method of producing such that it is 7.5 mol% or more with respect to the monomer (mol) is preferable. The addition amount of the polyfunctional monomer is more preferably 10 mol% or more, more preferably 15 mol% or more, and further preferably 20 mol% or more. Moreover, as an upper limit of addition amount, 50 mol% or less is preferable, More preferably, it is 33 mol% or less.

  For example, in the production of a dendritic polyester resin composed of R and trimesic acid composed of the structural units (I), (II), (III), (IV) and (V), the following production method is preferred. Can be mentioned.

  (1) A liquid crystalline polyester oligomer is synthesized from p-acetoxybenzoic acid, 4,4'-diacetoxybiphenyl, diacetoxybenzene, terephthalic acid, and isophthalic acid by a deacetic acid condensation polymerization reaction, and trimesic acid is added to remove acetic acid. A method of making it react.

  (2) A process for producing by a deacetic acid condensation polymerization reaction from p-acetoxybenzoic acid and 4,4'-diacetoxybiphenyl, diacetoxybenzene, terephthalic acid, isophthalic acid and trimesic acid.

  (3) p-hydroxybenzoic acid and 4,4′-dihydroxybiphenyl, hydroquinone and terephthalic acid, isophthalic acid is reacted with acetic anhydride to acylate the phenolic hydroxyl group, and then the liquid crystalline polyester is subjected to deacetic acid polycondensation reaction. A method of producing an oligomer by synthesizing it and adding trimesic acid to carry out a deacetic acid polymerization reaction.

  (4) Acetic anhydride is reacted with p-hydroxybenzoic acid and 4,4′-dihydroxybiphenyl, hydroquinone, terephthalic acid, isophthalic acid and trimesic acid to acylate the phenolic hydroxyl group, and then by deacetic acid polycondensation reaction. How to manufacture.

  (5) A liquid crystalline polyester oligomer is synthesized from a phenyl ester of p-hydroxybenzoic acid and 4,4′-dihydroxybiphenyl, hydroquinone, terephthalic acid, and diphenyl ester of isophthalic acid by a dephenol polycondensation reaction, and trimesic acid is added. A method of producing by dephenol polycondensation reaction.

  (6) A method of producing by dephenol polycondensation reaction from phenyl ester of p-hydroxybenzoic acid and 4,4'-dihydroxybiphenyl, hydroquinone and terephthalic acid, diphenyl ester of isophthalic acid and phenyl ester of trimesic acid.

  (7) A predetermined amount of diphenyl carbonate is reacted with p-hydroxybenzoic acid and aromatic dicarboxylic acid such as terephthalic acid, isophthalic acid, trimesic acid, etc. to form phenyl esters, respectively, and then 4,4′-dihydroxybiphenyl, hydroquinone A method in which an aromatic dihydroxy compound such as is added and produced by a dephenol polycondensation reaction.

  Especially, the manufacturing method of (1)-(4) is preferable, More preferably, the manufacturing method of (3) or (4) is preferable from the point of chain length control and a stereoregulation.

  The amount of acetic anhydride used is preferably 0.95 equivalents or more and 1.10 equivalents or less, more preferably 1.00 equivalents or more and 1.05 equivalents or less of the total of phenolic hydroxyl groups from the viewpoint of chain length control. preferable.

  The dendritic polyester resin of the present invention is characterized in that it has a reactive carboxylic acid or hydroxyl group and its derivative group at the terminal, and controls the amount of acetic anhydride and dihydroxy or dicarboxylic acid depending on the type of thermoplastic resin to be blended. It is possible to control the end groups by excessive addition of acid monomers. In order to increase the molecular weight, it is preferable to add an excess of dihydroxy monomer equivalent to the excess amount of carboxylic acid in trimesic acid or 4,4'-dihydroxybiphenyl to match the carboxylic acid with the hydroxyl equivalent, while preferentially using carboxylic acid It is preferable not to add an excessive amount of dihydroxy monomer to the terminal group, and to preferentially leave a hydroxyl group at the terminal, the dihydroxy monomer is added in excess of the carboxylic acid equivalent of trimesic acid and anhydrous. The acetic acid molar ratio is preferably less than 1.00.

  By these methods, the dendritic polyester resin of the present invention can be selectively provided with a terminal group structure rich in reactivity with various thermoplastic resins. However, depending on the thermoplastic resin, in order to suppress the reactivity, it is easier to control the dispersion state by selectively generating the end and then blocking the end with a monofunctional epoxy compound, monofunctional carboxylic acid or the like. In some cases.

  When the dendritic polyester resin of the present invention is produced by a deacetic acid polycondensation reaction, the dendritic polyester resin is reacted at a temperature at which the dendritic polyester resin melts, in some cases under reduced pressure, to distill a predetermined amount of acetic acid, and to perform a polycondensation reaction. A melt polymerization method that completes is preferable.

  For example, in a reaction vessel equipped with a predetermined amount of p-hydroxybenzoic acid and 4,4′-dihydroxybiphenyl, hydroquinone, terephthalic acid, isophthalic acid, acetic anhydride, a stirring blade, a distillation pipe, and a discharge port at the bottom. After charging and heating with stirring in a nitrogen gas atmosphere to acetylate the hydroxyl group, the temperature was raised to 200 to 350 ° C. to distill acetic acid, and at the stage of distilling to 50% of the theoretical distillate, trimesic acid A predetermined amount is added, and acetic acid is distilled to 91% of the theoretical distillation amount to complete the reaction.

  The conditions for the acetylation are usually 130 to 170 ° C., preferably 135 to 155 ° C., usually 0.5 to 6 hours, preferably 135 to 145 ° C. for 1 to 2 hours.

  The temperature for polycondensation is the melting temperature of the dendritic polyester resin, for example, in the range of 200 to 350 ° C., preferably the melting point of the dendritic polyester resin + 10 ° C. or higher, specifically 240 to 280 ° C. preferable. When polycondensation is performed, there is no problem even under atmospheric pressure nitrogen, but it is preferable to reduce the pressure because the reaction proceeds faster and the residual acetic acid in the system decreases. The degree of vacuum is usually 0.1 mmHg (13.3 Pa) to 200 mmHg (26600 Pa), preferably 10 mmHg (1330 Pa) to 100 mmHg (13300 Pa). In addition, although acetylation and polycondensation may be performed continuously in the same reaction vessel, acetylation and polycondensation may be performed in different reaction vessels.

The obtained dendritic polyester resin is pressurized at about 0.01 to 1.0 kg / cm ² (0.001 to 0.1 MPa) in the reaction vessel at a temperature at which it melts, and is provided at the lower portion of the reaction vessel. It can be discharged in the form of a strand from the discharged outlet. A mechanism that opens and closes intermittently is provided at the discharge port, and it is also possible to discharge liquid droplets.

      The discharged dendritic polyester resin is cooled by passing through air or water, and then cut or pulverized as necessary.

      The obtained pellets or granular or powdery dendritic polyester resin can further remove water, acetic acid, etc. by heat drying or vacuum drying, if necessary, to finely adjust the polymerization degree and further increase the polymerization degree. Therefore, it is possible to carry out solid phase polymerization.

  For example, under a nitrogen stream or under reduced pressure, the dendritic polyester resin is heated for 1 to 50 hours in the range of melting point −5 ° C. to melting point −50 ° C. (for example, 200 to 300 ° C.), and polycondensed to a desired degree of polymerization. And a method for completing the reaction.

  The polycondensation reaction of the dendritic polyester resin proceeds even without catalyst, but metal compounds such as stannous acetate, tetrabutyl titanate, potassium acetate and sodium acetate, antimony trioxide, and magnesium metal can also be used.

  The dendritic polyester resin of the present invention preferably has a number average molecular weight of 1,000 to 40,000, more preferably 1,000 to 20,000, still more preferably 1,000 to 10,000, Most preferably, it is in the range of 1,000 to 5,000.

  The number average molecular weight is a value measured as an absolute molecular weight by a GPC-LS (gel permeation chromatography-light scattering) method using a solvent in which the dendritic polyester resin is soluble.

  The melt viscosity of the dendritic polyester resin in the present invention is preferably 0.01 to 30 Pa · s, more preferably 0.5 to 20 Pa · s, and particularly preferably 1 to 10 Pa · s.

  In addition, this melt viscosity is a value measured by a Koka flow tester under the condition of the liquid crystal starting temperature of the dendritic polyester resin + 10 ° C. and the shear rate of 100 / s.

  The dendritic polyester resin of the present invention thus obtained has a melt liquid crystallinity, a high shear response, and a high elastic modulus and a high gas barrier by orientation. Can be used.

  The addition amount of the dendritic polyester resin (c) in the thermoplastic resin composition of the present invention is 0.01 to 30 parts by weight with respect to 100 parts by weight of the thermoplastic resin (a). Preferably it is 0.1-20 weight part, Most preferably, it is 0.5-10 weight part. When the addition amount is in the above range, the effect of the present invention is remarkably obtained, which is preferable.

  In the thermoplastic resin composition of the present invention, a filler can be further blended in order to impart mechanical strength and other characteristics. Although a filler is not specifically limited, Any fillers, such as fibrous form, plate shape, powder form, and a granular form, can be used. Fillers include glass fiber, carbon fiber, potassium titanate whisker, zinc oxide whisker, calcium carbonate whisker, wollastonite whisker, aluminum borate whisker, aramid fiber, alumina fiber, silicon carbide fiber, ceramic fiber, asbestos fiber, stone koji fiber , Fibrous fillers such as metal fibers, or silicates such as talc, wollastonite, zeolite, sericite, mica, kaolin, clay, pyrophyllite, bentonite, asbestos, alumina silicate, silicon oxide, magnesium oxide, alumina, Metal compounds such as zirconium oxide, titanium oxide and iron oxide, carbonates such as calcium carbonate, magnesium carbonate and dolomite, sulfates such as calcium sulfate and barium sulfate, glass beads, ceramic beads, boron nitride, silicon carbide, Hydroxides such as calcium oxide, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, glass flakes, glass powder, carbon black and silica, non-fibrous fillers such as graphite, and montmorillonite, beidellite, nontronite, saponite , Smectite clay minerals such as hectorite and soconite, various clay minerals such as vermiculite, halloysite, kanemite, kenyanite, zirconium phosphate, titanium phosphate, Li-type fluorine teniolite, Na-type fluorine teniolite, Na-type tetrasilicon fluorine mica, Li-type Layered silicates typified by swelling mica such as tetrasilicon fluorine mica are used. The layered silicate may be a layered silicate in which exchangeable cations existing between layers are exchanged with organic onium ions, and examples of the organic onium ions include ammonium ions, phosphonium ions, and sulfonium ions. Of these, ammonium ions and phosphonium ions are preferred, and ammonium ions are particularly preferred. As the ammonium ion, any of primary ammonium, secondary ammonium, tertiary ammonium, and quaternary ammonium may be used. Primary ammonium ions include decyl ammonium, dodecyl ammonium, octadecyl ammonium, oleyl ammonium, benzyl ammonium and the like. Secondary ammonium ions include methyl dodecyl ammonium and methyl octadecyl ammonium. Examples of tertiary ammonium ions include dimethyl dodecyl ammonium and dimethyl octadecyl ammonium. Quaternary ammonium ions include benzyltrialkylammonium ions such as benzyltrimethylammonium, benzyltriethylammonium, benzyltributylammonium, benzyldimethyldodecylammonium, benzyldimethyloctadecylammonium, trioctylmethylammonium, trimethyloctylammonium, trimethyldodecylammonium, trimethyloctadecyl. Examples thereof include alkyltrimethylammonium ions such as ammonium, dimethyldialkylammonium ions such as dimethyldioctylammonium, dimethyldidodecylammonium, and dimethyldioctadecylammonium. Besides these, it is derived from aniline, p-phenylenediamine, α-naphthylamine, p-aminodimethylaniline, benzidine, pyridine, piperidine, 6-aminocaproic acid, 11-aminoundecanoic acid, 12-aminododecanoic acid and the like. And ammonium ions. Among these ammonium ions, trioctylmethylammonium, trimethyloctadecylammonium, benzyldimethyloctadecylammonium, ammonium ions derived from 12-aminododecanoic acid, and the like are preferable. Layered silicates in which exchangeable cations present between layers are exchanged with organic onium ions can be produced by reacting layered silicates having exchangeable cations between layers and organic onium ions by a known method. it can. Specifically, a method by an ion exchange reaction in a polar solvent such as water, methanol, ethanol, or a method by directly reacting a layered silicate with a liquid or melted ammonium salt may be used. Among these fillers, preferred are glass fibers, talc, wollastonite, layered silicates such as montmorillonite and synthetic mica, and particularly preferred are glass fibers. Moreover, said filler can also be used in combination of 2 or more types. The surface of the filler used in the present invention can be used by treating the surface with a known coupling agent (for example, silane coupling agent, titanate coupling agent, etc.) or other surface treatment agents. . The type of glass fiber used in the present invention is not particularly limited as long as it is generally used for reinforcing a resin, and can be selected from, for example, a long fiber type or a short fiber type chopped strand, a milled fiber, or the like. Further, weakly alkaline glass fibers are excellent in terms of mechanical strength and can be preferably used. The glass fiber is preferably treated with a thermoplastic resin such as an ethylene / vinyl acetate copolymer, an epoxy-based, urethane-based, acrylic-based coating or sizing agent, and an epoxy-based resin is particularly preferable. Further, it is preferably treated with a silane-based or titanate-based coupling agent or other surface treatment agent, and an epoxysilane or aminosilane-based coupling agent is particularly preferable. The blending amount of the filler is usually 5 to 400 parts by weight, preferably 20 to 300 parts by weight with respect to 100 parts by weight of the thermoplastic resin composition.

  Furthermore, in the present invention, in order to maintain thermal stability, one or more heat-resistant agents selected from phenolic and phosphorus compounds can be contained. The blending amount of the heat-resistant agent is preferably 0.01 parts by weight or more, particularly preferably 0.02 parts by weight or more, with respect to 100 parts by weight of the thermoplastic resin composition of the present invention, from the viewpoint of heat resistance improvement effect. From the viewpoint of the gas component generated sometimes, it is preferably 5 parts by weight or less, particularly 1 part by weight or less. In addition, it is particularly preferable to use a phenolic compound and a phosphorus compound in combination because of their large heat resistance, heat stability, and fluidity retention effect.

  As the phenolic compound, a hindered phenolic compound is preferably used. Specific examples include triethylene glycol-bis [3-t-butyl- (5-methyl-4-hydroxyphenyl) propionate], N, N ′. Hexamethylene bis (3,5-di-t-butyl-4-hydroxy-hydrocinnamide), tetrakis [methylene-3- (3 ′, 5′-di-t-butyl-4′-hydroxyphenyl) propionate] methane , Pentaerythrityltetrakis [3- (3 ′, 5′-di-t-butyl-4′-hydroxyphenyl) propionate], 1,3,5-tris (3,5-di-t-butyl-4- Hydroxybenzyl) -s-triazine-2,4,6- (1H, 3H, 5H) -trione, 1,1,3-tris (2-methyl-4-hydro) Loxy-5-tert-butylphenyl) butane, 4,4′-butylidenebis (3-methyl-6-tert-butylphenol), n-octadecyl-3- (3,5-di-tert-butyl-4-hydroxy-) Phenyl) propionate, 3,9-bis [2- (3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy) -1,1-dimethylethyl] -2,4,8,10 -Tetraoxaspiro [5,5] undecane, 1,3,5-trimethyl-2,4,6-tris- (3,5-di-t-butyl-4-hydroxybenzyl) benzene and the like.

  Among them, N, N′-hexamethylenebis (3,5-di-t-butyl-4-hydroxy-hydrocinnamide), tetrakis [methylene-3- (3 ′, 5′-di-t-butyl-4′-). Hydroxyphenyl) propionate] methane and the like are preferably used.

  Next, as phosphorus compounds, bis (2,6-di-t-butyl-4-methylphenyl) pentaerythritol di-phosphite, bis (2,4-di-t-butylphenyl) penta Erythritol di-phosphite, bis (2,4-di-cumylphenyl) pentaerythritol di-phosphite, tris (2,4-di-t-butylphenyl) phosphite, tetrakis (2 , 4-Di-t-butylphenyl) -4,4′-bisphenylene phosphite, di-stearyl pentaerythritol di-phosphite, triphenyl phosphite, 3,5-dibutyl-4-hydroxybenzyl phosphonate Examples include diethyl ester. Among them, those having a high melting point are preferably used in order to reduce volatilization and decomposition of the heat-resistant material in the thermoplastic resin compound.

  The thermoplastic resin composition of the present invention further includes an ultraviolet absorber (for example, resorcinol, salicylate), a coloring preventing agent such as phosphite and hypophosphite, a lubricant and a release agent (stearic acid, montanic acid and Its metal salts, its esters, its half esters, stearyl alcohol, stearamide and polyethylene wax, etc., colorants including dyes and pigments, carbon black, crystal nucleating agents, plasticizers, flame retardants (bromine based) Normal additives such as flame retardants, phosphorus flame retardants, red phosphorus, silicone flame retardants), flame retardant aids, and antistatic agents, and polymers other than thermoplastic resins are blended to achieve predetermined characteristics. Further, it can be given.

  The method for producing the thermoplastic resin composition of the present invention is preferably by melt kneading, and a known method can be used for melt kneading. For example, using a Banbury mixer, a rubber roll machine, a kneader, a single screw or a twin screw extruder, etc., it can be melt kneaded at a temperature higher than the melting temperature of the thermoplastic resin to obtain a resin composition. Among these, a twin screw extruder is preferable. As a kneading method, 1) a method of kneading a thermoplastic resin, an impact resistance improving material, and a dendritic polyester resin all together, 2) first, a thermoplastic resin and an impact resistance improving material are melt-kneaded to obtain a resin composition, 3. Method of melt-kneading resin composition and dendritic polyester resin, 3) First, melt and knead thermoplastic resin and dendritic polyester resin to obtain a resin composition, and then melt-knead the resin composition and impact resistance improving material. Method 4) Create a resin composition (master pellet) containing dendritic polyester at a high concentration in a thermoplastic resin, and then add the resin composition, thermoplastic resin, and impact resistance improver so as to obtain a specified concentration. Method of melt kneading (master pellet method) 5) First, thermoplastic resin and impact modifier are introduced from the supply port upstream of the extruder, melt kneaded, and then dendritic polyester resin is introduced from the supply port downstream of the extruder Melting and kneading method, 6) First, a thermoplastic resin and dendritic polyester resin are introduced from the supply port upstream of the extruder and melt-kneaded, and then an impact resistance improving material is introduced from the supply port downstream of the extruder and melt-kneaded. Any kneading method may be used.

  The resin composition of the present invention can be molded by any known method such as injection molding, injection compression molding, compression molding, extrusion molding, blow molding, press molding, spinning, etc., and processed into various molded products for use. can do. As molded products, it can be used as injection molded products, extrusion molded products, blow molded products, films, sheets, fibers, etc., as films, as various films such as unstretched, uniaxially stretched, biaxially stretched, as fibers, It can be used as various fibers such as undrawn yarn, drawn yarn, and super-drawn yarn. In particular, in the present invention, taking advantage of the excellent fluidity, it can be processed into large injection molded products such as automobile parts and injection molded products having a thin portion having a thickness of 0.01 to 1.0 mm.

  In the present invention, the above-mentioned various molded products can be used for various applications such as automobile parts, electrical / electronic parts, building members, various containers, daily necessities, household goods and sanitary goods. Specific applications include air flow meters, air pumps, thermostat housings, engine mounts, ignition hobbins, ignition cases, clutch bobbins, sensor housings, idle speed control valves, vacuum switching valves, ECU housings, vacuum pump cases, inhibitor switches, rotations Sensor, Accelerometer, Distributor cap, Coil base, ABS actuator case, Radiator tank top and bottom, Cooling fan, Fan shroud, Engine cover, Cylinder head cover, Oil cap, Oil pan, Oil filter, Fuel cap, Fuel strainer , Distributor cap, vapor canister Automotive underhood parts such as uzing, air cleaner housing, timing belt cover, brake booster parts, various cases, various tubes, various tanks, various hoses, various clips, various valves, various pipes, torque control lever, safety belt parts, Car interior parts such as register blade, washer lever, window regulator handle, window regulator handle knob, passing light lever, sun visor bracket, various motor housings, roof rail, fender, garnish, bumper, door mirror stay, spoiler, food louver, Wheel covers, wheel caps, grill apron cover frames, lamp reflectors, lamp bezels, door handles, etc. Car exterior parts, wire harness connectors, SMJ connectors, PCB connectors, door grommet connectors, various automotive connectors, relay cases, coil bobbins, optical pickup chassis, motor cases, laptop computer housings and internal parts, CRT display housings and internal parts, Printer housings and internal parts, mobile terminal housings and internal parts such as mobile phones, mobile PCs, handheld mobiles, recording medium (CD, DVD, PD, FDD, etc.) drive housings and internal parts, copier housings and internal parts And electrical / electronic parts such as facsimile housings and internal parts, parabolic antennas, and the like. Furthermore, VTR parts, TV parts, irons, hair dryers, rice cooker parts, microwave oven parts, acoustic parts, video camera parts, video equipment parts such as projectors, laser discs (registered trademark), compact discs (CD), CD-ROMs , CD-R, CD-RW, DVD-ROM, DVD-R, DVD-RW, DVD-RAM, Blu-ray disc and other optical recording media substrates, lighting parts, refrigerator parts, air conditioner parts, typewriter parts, word processor parts , Etc., home and office electrical appliance parts. Also, housings and internal parts of electronic musical instruments, home game machines, portable game machines, various gears, various cases, sensors, LEP lamps, connectors, sockets, resistors, relay cases, switches, coil bobbins, capacitors, variable capacitor cases, Optical pickups, oscillators, various terminal boards, transformers, plugs, printed wiring boards, tuners, speakers, microphones, headphones, small motors, magnetic head bases, power modules, semiconductors, liquid crystals, FDD carriages, FDD chassis, motor brush holders , Electrical and electronic parts such as transformer members, coil bobbins, sash doors, blind curtain parts, piping joints, curtain liners, blind parts, gas meter parts, water meter parts, water heater parts, roof panels, Hot walls, adjusters, plastic bundles, ceiling fishing gear, staircases, doors, floors and other building materials, fishing lines, fishing nets, seaweed aquaculture nets, fishing bait bags and other marine products, vegetation nets, vegetation mats, weedproof bags, protection Grass net, curing sheet, slope protection sheet, fly ash holding sheet, drain sheet, water retention sheet, sludge / sludge dehydration bag, concrete formwork and other civil engineering related parts, gears, screws, springs, bearings, levers, key stems, cams , Ratchet, roller, water supply parts, toy parts, cable ties, clips, fans, tegus, pipes, cleaning jigs, motor parts, microscopes, binoculars, cameras, watches and other mechanical parts, multi-films, tunnel films, prevention Bird sheet, Non-woven fabric for vegetation protection, Pot for seedling, Vegetation pile, Seed string tape, Germination sheet, House lining sheet, Agricultural fastener, Slow-release fertilizer, Agricultural materials such as root sheets, garden nets, insect nets, infant tree nets, print laminates, fertilizer bags, sample bags, sandbags, beast damage nets, inducement strings, windproof nets, paper diapers, sanitary wrapping materials, cotton swabs, towels , Hygiene products such as toilet seat wipes, medical non-woven fabric (stitching part reinforcement, adhesion prevention film, prosthetic repair material), wound dressing material, wound tape bandage, sticker base fabric, surgical suture, fracture reinforcement, medical Medical supplies such as film, calendar, stationery, clothing, food packaging film, tray, blister, knife, fork, spoon, tube, plastic can, pouch, container, tank, basket, etc. Fill containers, microwave cooking containers, cosmetic containers, wraps, foam buffers, paper laminates, shampoo bottles, beverage bottles, cups, candy packaging, Containers such as shrink labels, lid materials, envelopes with windows, fruit baskets, hand cut tape, easy peel packaging, egg packs, HDD packaging, compost bags, recording media packaging, shopping bags, wrapping films for electrical and electronic parts, etc. Packaging, natural fiber composites, polo shirts, T-shirts, innerwear, uniforms, sweaters, socks, ties, and other clothing, curtains, chairs, carpets, tablecloths, futons, wallpaper, furoshiki and other interior goods, carrier tape, Print lamination, heat sensitive stencil printing film, release film, porous film, container bag, credit card, cash card, ID card, IC card, paper, leather, non-woven fabric hot melt binder, magnetic material, zinc sulfide, electrode Powder binders for materials, optical elements, Electric embossed tape, IC tray, golf tee, garbage bag, plastic bag, various nets, toothbrush, stationery, draining net, body towel, hand towel, tea pack, drainage filter, clear file, coating agent, adhesive, bag Useful as chair, table, cooler box, kumade, hose reel, planter, hose nozzle, dining table, desk surface, furniture panel, kitchen cabinet, pen cap, gas lighter, etc., automotive interior parts, automotive exterior parts It is particularly useful as a connector for automobiles.

  The thermoplastic resin composition of the present invention and a molded product comprising the same can be recycled. For example, a resin composition obtained by pulverizing a resin composition and a molded product comprising the resin composition, preferably powdered, and then adding additives as necessary, is used in the same manner as the resin composition of the present invention. It can also be a molded product.

  Hereinafter, although an example explains the present invention still in detail, the gist of the present invention is not limited only to the following example.

Reference example 1
In a reaction vessel equipped with a stirring blade and a distillation tube, 48.0 g (0.35 mol) of p-hydroxybenzoic acid, 30.9 g (0.17 mol) of 4,4′-dihydroxybiphenyl, 5.41 g of terephthalic acid ( 0.033 mol), 10.4 g (0.054 mol) of PET having an intrinsic viscosity of about 0.6 dl / g, 42.0 g (0.20 mol) of trimesic acid, and 76.3 g of acetic anhydride (total of phenolic hydroxyl groups) 1.1 equivalents), and the mixture was reacted at 145 ° C. for 1.5 hours with stirring in a nitrogen gas atmosphere, and then heated to 280 ° C. to carry out a deacetic acid polycondensation reaction. The mixture was stirred for 4 hours, and when about 76% of the theoretical distillation amount of acetic acid was distilled, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (C-1).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-1) was found to have an R portion structure having a p-oxybenzoate unit content p of 2.0, 4,4′-dioxybiphenyl units and ethylene oxide. The unit content q was 0.5, the terephthalate unit content r was 0.5, p + q + r = 3, and the branching point content was 25 mol%. The terminal structure had a carboxylic acid / acetyl group ratio of 75:25.

  The obtained dendritic polyester resin had a melting point Tm of 180 ° C., a liquid crystal starting temperature of 159 ° C., and a number average molecular weight of 2100.

  The melting point (Tm) is determined by differential calorimetry. After observing the endothermic peak temperature (Tm1) observed when the polymer is measured at room temperature to 20 ° C./minute, the temperature is maintained at Tm1 + 20 ° C. for 5 minutes. Then, after once cooling to room temperature under a temperature drop condition of 20 ° C./min, the endothermic peak temperature (Tm) observed when measured again under a temperature rise condition of 20 ° C./min was used.

  The liquid crystal starting temperature is measured with a shear stress heating device (CSS-450) at a shear rate of 100 (1 / sec), a temperature increase rate of 5.0 ° C./min, and an objective lens 60 times, and the entire field of view starts to flow. Measured as temperature.

  The molecular weight was measured by GPC-LS (gel permeation chromatography-light scattering) method using pentafluorophenol, which is a solvent in which the dendritic polyester resin is soluble, and the number average molecular weight was determined.

Reference example 2
In a reaction vessel equipped with a stirring blade and a distillation tube, 48.0 g (0.35 mol) of p-hydroxybenzoic acid, 30.9 g (0.17 mol) of 4,4′-dihydroxybiphenyl, 5.41 g of terephthalic acid ( 0.033 mol), 10.4 g (0.054 mol) of PET having an intrinsic viscosity of about 0.6 dl / g, 42.0 g (0.20 mol) of trimesic acid, and 76.3 g of acetic anhydride (total of phenolic hydroxyl groups) 1.1 equivalents), and the mixture was reacted at 145 ° C. for 1.5 hours with stirring in a nitrogen gas atmosphere, and then heated to 250 ° C. to conduct a deacetic acid condensation reaction. After the reactor internal temperature reached 250 ° C., 14.7 g (0.12 mol) of benzoic acid was added and the temperature was raised to 280 ° C. When 100% of the theoretical distillation amount of acetic acid was distilled, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (C-2).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-2) was found to have an R-part structure having a p-oxybenzoate unit content p of 2.0, 4,4′-dioxybiphenyl units and ethylene oxide. The unit content q was 0.5, the terephthalate unit content r was 0.5, p + q + r = 3, and the branching point content was 25 mol%. The terminal structures were carboxylic acid and benzoic acid ester.

  The obtained dendritic polyester resin had a melting point Tm of 182 ° C., a liquid crystal starting temperature of 163 ° C., and a number average molecular weight of 2500.

Reference example 3
In a 500 mL reaction vessel equipped with a stirring blade and a distillation tube, 66.3 g (0.48 mol) of p-hydroxybenzoic acid, 8.38 g (0.045 mol) of 4,4′-dihydroxybiphenyl, and 7. 48 g (0.045 mol), 14.41 g (0.075 mol) of polyethylene terephthalate having an intrinsic viscosity of about 0.6 dl / g and 62.48 g of acetic anhydride (1.00 equivalent of total phenolic hydroxyl groups) The mixture was stirred and reacted at 145 ° C. for 2 hours with stirring under a nitrogen gas atmosphere. Then, 31.52 g (0.15 mol) of trimesic acid was added, the temperature was raised to 260 ° C., and the mixture was stirred for 3 hours. When 91% of the amount was distilled, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (C-3).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-3) was found to have a structure of R portion, a p-oxybenzoate unit content p of 2.661.33, 4,4′-dioxybiphenyl unit. The ethylene oxide unit content q was 0.67, the terephthalate unit content r was 0.67, p + q + r = 4, and the branching point content was 20 mol%. The terminal structure was an acetyl group.

  In addition, about the branch state, since the information obtained from a nuclear magnetic resonance spectrum analysis is an average value, the decimal degree was rounded off and the branching degree was calculated as an integer. The degree of branching represents how many of the three functional groups are reacted at the branch point D. The nuclear magnetic resonance spectrum was measured at 40 ° C. with a 50% pentafluorophenol: 50% chloroform mixed solvent in the proton nucleus, and the peaks of 7.44 ppm and 8.16 ppm derived from p-oxybenzoate units, 4,4′-di- Detection of 7.04 ppm, 7.70 ppm peaks derived from oxybiphenyl units, 8.31 ppm peaks derived from terephthalate units, 4.75 ppm peaks derived from ethylene oxide units, and 9.25 ppm peaks derived from structural units derived from trimesic acid From the peak intensity ratio, the content p, q, r and branch point content of each structural unit were calculated.

  The obtained dendritic polyester resin had a melting point Tm of 185 ° C., a liquid crystal starting temperature of 159 ° C., and a number average molecular weight of 2300.

Reference example 4
In a 500 mL reaction vessel equipped with a stirring blade and a distillation pipe, 58.01 g (0.42 mol) of p-hydroxybenzoic acid, 23.46 g (0.126 mol) of 4,4′-dihydroxybiphenyl, 5.95 g of hydroquinone. (0.054 mol), 19.44 g (0.117 mol) of terephthalic acid, isophthalic acid (0.063 mol) and 79.63 g of acetic anhydride (1.00 equivalent of total phenolic hydroxyl groups) were charged in a nitrogen gas atmosphere. The mixture was reacted at 145 ° C. for 2 hours with stirring, and then added with 31.52 g (0.15 mol) of trimesic acid, heated to 260 ° C., stirred for 3 hours, and 91% of the theoretical distillation amount of acetic acid. When distilling, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (C-4).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-4) has a structure in which the R portion has a p-oxybenzoate unit content p of 2.14, 4,4′-dioxybiphenyl units and di-esters. The oxybenzene unit content q was 0.92, the terephthalate unit and isophthalate unit content r was 0.92, p + q + r = 4, and the branching point content was 20 mol%. The terminal structure excluding the terminal functional group of trimesic acid had a ratio of carboxylic acid to acetyl group of 75:25.

  The obtained dendritic polyester resin had a melting point Tm of 186 ° C., a liquid crystal starting temperature of 159 ° C., and a number average molecular weight of 2,100.

Reference Example 5
In a 500 mL reaction vessel equipped with a stirring blade and a distillation tube, 58.01 g (0.42 mol) of p-hydroxybenzoic acid, 42.08 g (0.226 mol) of 4,4′-dihydroxybiphenyl, 5.95 g of hydroquinone. (0.054 mol), 19.44 g (0.117 mol) of terephthalic acid, isophthalic acid (0.063 mol) and 83.61 g of acetic anhydride (1.05 equivalent of total phenolic hydroxyl groups) were charged in a nitrogen gas atmosphere. The mixture was reacted at 145 ° C. for 2 hours with stirring, and then added with 31.52 g (0.15 mol) of trimesic acid, heated to 260 ° C., stirred for 3 hours, and 91% of the theoretical distillation amount of acetic acid. When distilling, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (C-5).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-5) has a structure in which the R portion has a p-oxybenzoate unit content p of 2.14, 4,4′-dioxybiphenyl units and di-esters. The oxybenzene unit content q was 1.40, the terephthalate unit and isophthalate unit content r was 0.46, p + q + r = 4, and the branching point content was 20 mol%. The terminal structure excluding the trimesic acid functional group had a ratio of carboxylic acid to acetyl group of 50:50.

  The obtained dendritic polyester resin had a melting point Tm of 192 ° C., a liquid crystal starting temperature of 167 ° C., and a number average molecular weight of 3600.

Reference Example 6
In a 500 mL reaction vessel equipped with a stirring blade and a distillation tube, 58.01 g (0.42 mol) of p-hydroxybenzoic acid, 42.08 g (0.226 mol) of 4,4′-dihydroxybiphenyl, 5.95 g of hydroquinone. (0.054 mol), 19.44 g (0.117 mol) of terephthalic acid, isophthalic acid (0.063 mol) and 75.65 g of acetic anhydride (0.95 equivalent of total phenolic hydroxyl groups) were charged in a nitrogen gas atmosphere. The mixture was reacted at 145 ° C. for 2 hours with stirring, and then added with 31.52 g (0.15 mol) of trimesic acid, heated to 260 ° C., stirred for 3 hours, and 91% of the theoretical distillation amount of acetic acid. When distilling, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (C-6).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-6) was found to have a structure of R portion having a p-oxybenzoate unit content p of 2.14, 4,4′-dioxybiphenyl units and di-esters. The oxybenzene unit content q was 0.92, the terephthalate unit and isophthalate unit content r was 0.92, p + q + r = 4, and the branching point content was 20 mol%. The terminal structure had a ratio of carboxylic acid to hydroxyl group of 40:60.

  The obtained dendritic polyester resin had a melting point Tm of 188 ° C., a liquid crystal starting temperature of 157 ° C., and a number average molecular weight of 2900.

Reference Example 7
In a 500 mL reaction vessel equipped with a stirring blade and a distillation tube, 60.50 g (0.44 mol) of p-hydroxybenzoic acid, 30.49 g (0.162 mol) of 6-hydroxy-2-naphthoic acid, 4,4 After charging 18.62 g (0.10 mol) of '-dihydroxybiphenyl and 61.25 g of acetic anhydride (1.00 equivalent of total phenolic hydroxyl groups), the mixture was reacted at 145 ° C. for 2 hours with stirring in a nitrogen gas atmosphere. Then, 31.52 g (0.176 mol) of trimesic acid was added, the temperature was raised to 260 ° C., and the mixture was stirred for 3 hours. When 91% of the theoretical distillation amount of acetic acid was distilled, the heating and stirring were stopped, and the contents Was discharged into cold water to obtain a dendritic polyester resin (C-7).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-7) has a structure in which the R portion has a p-oxybenzoate unit and 6-oxy-2-naphthoate unit content p of 3.42, 4, The content q of 4′-dioxybiphenyl units was 0.58, p + q + r = 4, and the branching point content was 20 mol%. The terminal structure excluding the functional group of trimesic acid had a ratio of carboxylic acid to hydroxyl group of 75:25.

  The obtained dendritic polyester resin had a melting point Tm of 168 ° C., a liquid crystal starting temperature of 145 ° C., and a number average molecular weight of 2,100.

Reference Example 8
In a 500 mL reaction vessel equipped with a stirring blade and a distillation pipe, 58.01 g (0.42 mol) of p-hydroxybenzoic acid, 23.46 g (0.126 mol) of 4,4′-dihydroxybiphenyl, 5.95 g of hydroquinone. (0.054 mol), 19.44 g (0.117 mol) of terephthalic acid, isophthalic acid (0.063 mol) and 79.63 g of acetic anhydride (1.00 equivalent of total phenolic hydroxyl groups) were charged in a nitrogen gas atmosphere. The mixture was reacted at 145 ° C. for 2 hours with stirring under the conditions of the following, 31.52 g (0.15 mol) of trimesic acid was added, the temperature was raised to 260 ° C., the mixture was stirred for 3 hours, and the pressure was reduced to 26600 Pa. When 93% of the distillate was distilled, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (C-8).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-8) has a structure in which the R portion has a p-oxybenzoate unit content p of 2.14, 4,4′-dioxybiphenyl units and di-esters. The oxybenzene unit content q was 0.92, the terephthalate unit and isophthalate unit content r was 0.92, p + q + r = 4, and the branching point content was 20 mol%. The terminal structure excluding the functional group of trimesic acid had a ratio of carboxylic acid to acetyl group of 75:25.

  The obtained dendritic polyester resin had a melting point Tm of 225 ° C., a liquid crystal starting temperature of 197 ° C., and a number average molecular weight of 4400.

Reference Example 9
In a 500 mL reaction vessel equipped with a stirring blade and a distillation pipe, 58.01 g (0.42 mol) of p-hydroxybenzoic acid, 23.46 g (0.126 mol) of 4,4′-dihydroxybiphenyl, 5.95 g of hydroquinone. (0.054 mol), 19.44 g (0.117 mol) of terephthalic acid, isophthalic acid (0.063 mol) and 79.63 g of acetic anhydride (1.00 equivalent of total phenolic hydroxyl groups) were charged in a nitrogen gas atmosphere. The reaction was carried out at 145 ° C. for 2 hours with stirring, and then added with 31.52 g (0.15 mol) of trimesic acid. When 96% of the distillate was distilled, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (C-9).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-9) was found to have an R-part structure having a p-oxybenzoate unit content p of 2.14, 4,4′-dioxybiphenyl units and ethylene oxide. The unit content q was 0.92, the terephthalate unit content r was 0.92, p + q + r = 4, and the branching point content was 20 mol%. The terminal structure had a ratio of carboxylic acid to acetyl group of 75:25.

  The obtained dendritic polyester resin had a melting point Tm of 256 ° C., a liquid crystal starting temperature of 228 ° C., and a number average molecular weight of 9,500.

Reference Example 10
In a 500 mL reaction vessel equipped with a stirring blade and a distillation pipe, 58.01 g (0.42 mol) of p-hydroxybenzoic acid, 23.46 g (0.126 mol) of 4,4′-dihydroxybiphenyl, 5.95 g of hydroquinone. (0.054 mol), 19.44 g (0.117 mol) of terephthalic acid, isophthalic acid (0.063 mol) and 79.63 g of acetic anhydride (1.00 equivalent of total phenolic hydroxyl groups) were charged in a nitrogen gas atmosphere. The mixture was reacted at 145 ° C. for 2 hours with stirring, and then added with 15.13 g (0.072 mol) of trimesic acid, heated to 260 ° C., stirred for 3 hours, and 91% of the theoretical distillation amount of acetic acid. When distilling out, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (C-10).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-10) was found to have a structure of R portion having a p-oxybenzoate unit content p of 4.84, 4,4′-dioxybiphenyl units and di-esters. The oxybenzene unit content q was 2.09, the terephthalate unit and isophthalate unit content r was 2.09, p + q + r = 9, and the branching point content was 10 mol%. The terminal structure excluding the functional group of trimesic acid had a ratio of carboxylic acid to acetyl group of 75:25.

  The obtained dendritic polyester resin had a melting point Tm of 208 ° C., a liquid crystal starting temperature of 189 ° C., and a number average molecular weight of 4500.

Reference Example 11
In a 500 mL reaction vessel equipped with a stirring blade and a distillation pipe, 58.01 g (0.42 mol) of p-hydroxybenzoic acid, 23.46 g (0.126 mol) of 4,4′-dihydroxybiphenyl, 5.95 g of hydroquinone. (0.054 mol), 19.44 g (0.117 mol) of terephthalic acid, isophthalic acid (0.063 mol) and 79.63 g of acetic anhydride (1.00 equivalent of total phenolic hydroxyl groups) were charged in a nitrogen gas atmosphere. The mixture was reacted at 145 ° C. for 2 hours with stirring, and then 23.12 g (0.15 mol) of α-resorcillic acid was added, the temperature was raised to 260 ° C., and the mixture was stirred for 3 hours. When 91% was distilled, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (C-11).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-11) was found to have an R-part structure having a p-oxybenzoate unit content p of 2.14, 4,4′-dioxybiphenyl units and ethylene oxide. The unit content q was 0.92, the terephthalate unit content r was 0.92, p + q + r = 4, and the branching point content was 20 mol%. The terminal structure had a ratio of carboxylic acid to acetyl group of 42:58.

  The obtained dendritic polyester resin had a melting point Tm of 176 ° C., a liquid crystal starting temperature of 152 ° C., and a number average molecular weight of 2,000.

Reference Example 12
In a 500 mL reaction vessel equipped with a stirring blade and a distillation tube, 66.3 g (0.48 mol) of p-hydroxybenzoic acid, 8.38 g (0.045 mol) of 4,4′-dihydroxybiphenyl, and 7. 48 g (0.045 mol), 14.41 g (0.075 mol) of polyethylene terephthalate having an intrinsic viscosity of about 0.6 dl / g and 62.48 g of acetic anhydride (1.00 equivalent of total phenolic hydroxyl groups) The mixture was charged and reacted at 145 ° C. for 2 hours with stirring under a nitrogen gas atmosphere, then heated to 260 ° C. and stirred for 3 hours. When 91% of the theoretical distillation amount of acetic acid was distilled, heating and stirring were performed. The operation was stopped, and the contents were discharged into cold water to obtain a linear liquid crystal resin (E-1).

  The melting point of this liquid crystal resin (E-1) was 264 ° C., the liquid crystal starting temperature was 232 ° C., and the number average molecular weight was 2200.

Reference Example 13
In a 500 mL reaction vessel equipped with a stirring blade and a distillation tube, 66.3 g (0.48 mol) of p-hydroxybenzoic acid, 8.38 g (0.045 mol) of 4,4′-dihydroxybiphenyl, and 7. 48 g (0.045 mol), 14.41 g (0.075 mol) of polyethylene terephthalate having an intrinsic viscosity of about 0.6 dl / g and 62.48 g of acetic anhydride (1.00 equivalent of total phenolic hydroxyl groups) The mixture was stirred and reacted at 145 ° C. for 2 hours with stirring under a nitrogen gas atmosphere. Then, 6.62 g (0.032 mol) of trimesic acid was added, the temperature was raised to 260 ° C., and the mixture was stirred for 3 hours. When 91% of the amount was distilled, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (E-2).
As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (E-2) was found to have an R-part structure of p-oxybenzoate unit content p of 10.22, 4,4′-dioxybiphenyl unit and ethylene oxide. The unit content q was 4.41, the terephthalate unit content r was 4.41, p + q + r = 19, and the branching point content was 5 mol%.

  The obtained polyester had a melting point Tm of 232 ° C., a liquid crystal starting temperature of 215 ° C., and a number average molecular weight of 2200.

Reference Example 14
The reaction vessel equipped with a stirring blade and a condenser was purged with nitrogen, and then 5 parts of trimethylolpropane, 50 parts of 2,2′-bis (hydroxymethyl) heptanoic acid, 7 parts of stearic acid, and 0.2 of p-toluenesulfonic acid The mixture was reacted for 2 hours while stirring at 140 ° C. under a nitrogen stream, and further reacted at 140 ° C. and 67 Pa for 1 hour to obtain a dendritic resin (E-3). As a result of analyzing E-3, it was number average molecular weight 1900.

Reference Example 15
In a 500 mL reaction vessel equipped with a stirring blade and a distillation tube, 66.30 g (0.48 mol) of p-hydroxybenzoic acid, 8.38 g (0.045 mol) of 4,4′-dihydroxybiphenyl, and terephthalic acid 7. 48 g (0.045 mol), 14.40 g (0.075 mol) of polyethylene terephthalate having an intrinsic viscosity of about 0.6 dl / g, 42.72 g (0.28 mol) of α-resorcillic acid, and acetic anhydride 78 .26 g (1.08 equivalent of the total of phenolic hydroxyl groups) was charged and reacted at 145 ° C. for 2 hours with stirring under a nitrogen gas atmosphere. Thereafter, the temperature was raised to 260 ° C., and the mixture was stirred for 3 hours. When 91% of acetic acid was distilled out, 25.6 g of benzoic acid (0.21 mol; 1.000 times the theoretical acetoxy terminal). ) Was added, and when acetic acid was distilled off to 100%, heating and stirring were stopped, and the contents were discharged into cold water to obtain a dendritic polyester resin (C-12).

  As a result of nuclear magnetic resonance spectrum analysis, this dendritic polyester resin (C-12) was found to have an R portion structure having a p-oxybenzoate unit content p of 1.32, 4,4′-dioxybiphenyl units and ethylene oxide. The unit content q was 0.33, the terephthalate unit content r was 0.33, p + q + r = 2, and the branching point content was 30 mol%. The terminal structure had a ratio of carboxylic acid to acetyl group of 50:50.

  The obtained dendritic polyester resin had a melting point Tm of 182 ° C., a liquid crystal starting temperature of 152 ° C., and a number average molecular weight of 3,500.

(1) Fluidity Using SG75H-MIV manufactured by Sumitomo Heavy Industries, the cylinder temperature is set to 250 ° C., the injection pressure is set to 30 MPa, the mold temperature is 80 ° C., and the rod is 200 mm long × 10 mm wide × 1 mm thick. Using a flow test piece, the rod flow length at a holding pressure of 0 was measured. The larger the flow length, the better the fluidity.

(2) Melt viscosity This is a shear rate of 100 / s as measured by a capillograph (manufactured by Toyo Seiki) using a capillary having a measurement temperature of 250 ° C. and L10 mm × D1 mm.

(3) Tensile strength, tensile elongation at break The tensile test was conducted on ASTM No. 1 dumbbell test piece at a crosshead speed of 10 mm / min using a tester Tensilon UTA2.5T (made by Baldwin) in accordance with ASTM D-638.

(4) Impact resistance According to ASTM D256, the Izod impact strength of a molded product with a 3 mm thick notch at 23 ° C. was measured.

(5) Low temperature impact resistance Izod impact strength was measured by the same method as the above impact resistance except that the temperature atmosphere was set to -10 ° C.

(Examples 1-16, Comparative Examples 1-9)
Each component shown below is dry blended in the proportions shown in Tables 1 and 2 and then supplied from the main feeder of the extruder, and is set at a cylinder set temperature of 250 ° C. with a TEX30 twin screw extruder manufactured by Nippon Steel, Ltd. Melting and kneading were performed at a rotational speed of 200 rpm, and the gut discharged from the die was immediately cooled in a water bath and pelletized by a strand cutter. The pellets obtained were dried at 80 ° C. under reduced pressure for 12 hours, and test pieces were prepared by injection molding (SG75H-MIV, Sumitomo Heavy Industries, Ltd., cylinder temperature 250 ° C., mold temperature 80 ° C.). The results of evaluating the fluidity and mechanical properties of each sample are as shown in Tables 1 and 2. Comparative Example 1 is a nylon 6 resin simple substance, and as shown in Comparative Examples 2 to 4, by adding an impact resistance improving material, tensile properties and impact resistance are greatly improved, but fluidity is greatly reduced. I understand. In contrast, in Examples 1 to 16, the fluidity is greatly improved while maintaining the excellent tensile properties and impact resistance obtained by blending the impact resistance improver. Although the comparative example 5 is a case where the dendritic polyester resin exceeding the range of description of this invention is mix | blended, the fall of impact resistance is seen. Comparative Example 6 is a linear liquid crystal resin, and Comparative Example 7 is a case where a dendritic polyester resin not satisfying the requirements of the present invention is used, but the effect of improving fluidity was not observed. Comparative Examples 8 and 9 were cases where a dendritic resin having a structure different from that of the present invention was blended, but there was a decrease in physical properties although there was an effect of improving fluidity. In contrast, this example has excellent tensile properties, impact resistance and fluidity in a well-balanced manner.

(Examples 17-21, Comparative Examples 10-14)
Each component shown below was dry blended in the proportions shown in Table 3, and then supplied from the main feeder of the extruder, using a TEX30 type twin screw extruder manufactured by Nippon Steel Works, with a cylinder set temperature of 250 ° C. and a screw speed of 200 rpm. The gut discharged from the die was immediately cooled in a water bath and pelletized with a strand cutter. The pellets obtained were dried at 110 ° C. for 12 hours, and test pieces were prepared by injection molding (SG75H-MIV, Sumitomo Heavy Industries, Ltd., cylinder temperature 250 ° C., mold temperature 80 ° C.). The results of evaluating the fluidity and mechanical properties of each sample are shown in Table 3. In comparison with Comparative Example 10 which is a single PBT resin, Comparative Examples 11 and 12 in which an impact resistance improving material is blended, and Comparative Examples 13 and 14 in which a dendritic resin having a structure different from the present invention is blended, Examples 17 to No. 21 has excellent tensile properties, impact resistance and fluidity in a well-balanced manner.

(Examples 22 to 27)
Each component shown below was dry-blended in the proportions shown in Table 4 and then supplied from an extruder main feeder. Using a TEX30 twin screw extruder manufactured by Nippon Steel Works, the cylinder set temperature was 250 ° C. and the screw rotation speed was 200 rpm. The gut discharged from the die was immediately cooled in a water bath and pelletized with a strand cutter. Of the obtained pellets, Examples 22 to 24 were dried under reduced pressure at 80 ° C. for 12 hours, and Examples 25 to 27 were pellets dried at 110 ° C. for 12 hours, injection molding (SG75H-MIV manufactured by Sumitomo Heavy Industries, Ltd., cylinder temperature). Test pieces were prepared by 250 ° C. and mold temperature 80 ° C.). The results of evaluating the fluidity and mechanical properties of each sample are as shown in Table 4. Compared with the comparative example, this example has excellent tensile properties, impact resistance and fluidity in a balanced manner.

The thermoplastic resin (a) used for the present Example and the comparative example is as follows.
A-1: Nylon 6 resin having a melting point of 225 ° C. and 98% sulfuric acid 1 g / dl and a relative viscosity of 2.80 (CM1010 manufactured by Toray Industries, Inc.)
A-2: Nylon 6 resin with a melting point of 225 ° C. and 98% sulfuric acid 1 g / dl and a relative viscosity of 3.40 (CM1021 manufactured by Toray)
A-3: Polybutylene terephthalate resin having a melting point of 225 ° C. and an intrinsic viscosity of 0.85 (1100S manufactured by Toray Industries, Inc.)
Similarly, the impact resistance improving material (b) is as follows.
B-1: Acid-modified ethylene / 1-butene copolymer (“Tafmer” MH7020 manufactured by Mitsui Chemicals).
B-2: Ethylene / methyl acrylate / glycidyl methacrylate copolymer (Sumitomo Chemical "Bond First" 7L).

Similarly, the dendritic polyester resin (c) is as follows.
C-1: Reference Example 1
C-2: Reference Example 2
C-3: Reference Example 3
C-4: Reference Example 4
C-5: Reference Example 5
C-6: Reference Example 6
C-7: Reference Example 7
C-8: Reference Example 8
C-9: Reference Example 9
C-10: Reference Example 10
C-11: Reference Example 11
C-12: Reference Example 15

The following additives were used in the comparative examples.
E-1: Reference Example 12
E-2: Reference Example 13
E-3: Reference example 14
E-4: Hyperbranched polymer with molecular weight of 3500 (BOLTORN H30) manufactured by Perstorp

Claims (10)

1 to 100 parts by weight of the impact resistance improver (b), and the aromatic oxycarbonyl unit (S), aromatic and / or aliphatic dioxy unit (T), and 100 parts by weight of the thermoplastic resin (a) , At least one structural unit selected from aromatic dicarbonyl units (U) and a trifunctional or higher functional organic residue (D), and each of S, T and U is represented by the following formula (1): At least one structural unit selected from the structural units in which the content of D is in the range of 7.5 to 50 mol% with respect to the total monomers constituting the dendritic polyester, and exhibits molten liquid crystallinity. A thermoplastic resin composition comprising 0.01 to 30 parts by weight of a dendritic polyester resin (c).

(Here, R1, R2 and R3 are each at least one structural unit selected from structural units represented by the following formula.)

(Wherein, Y is at least one selected from a hydrogen atom, a halogen atom and an alkyl group. In the formula, n is an integer of 2 to 8.) The dendritic polyester resin (c) is a thermoplastic resin composition according to claim 1 Symbol mounting, characterized in that it contains a basic skeleton represented by the following formula (2).

(Here, D is an organic residue of a trifunctional compound, and DD is bonded directly by an ester bond and / or an amide bond, or bonded via a structural unit selected from S, T and U. Yes.) The dendritic polyester resin (c) is claim 1 Symbol placement thermoplastic resin composition characterized in that it contains a basic skeleton represented by the following formula (3).

(Here, D is an organic residue of a tetrafunctional compound, and DD is bonded directly by an ester bond and / or an amide bond or via a structural unit selected from S, T and U. Yes.) The thermoplastic resin composition according to any one of claims 1 to 3 , wherein the organic residue represented by D of the dendritic polyester resin (c) is a structural unit derived from an aromatic compound. 4. The thermoplastic resin composition, wherein the organic residue represented by D is an organic residue shown by the following formula (4) of the dendritic polyester resin (c).

The thermoplastic resin composition according to any one of claims 1 to 5 , wherein the impact resistance improving material (b) is an olefin resin. The impact resistance improving material (b) is at least one selected from an ethylene / α-olefin copolymer or an ethylene / α, β-unsaturated carboxylic acid ester copolymer modified with an unsaturated carboxylic acid or a derivative thereof. It is, The thermoplastic resin composition in any one of Claims 1-6 characterized by the above-mentioned. The thermoplastic resin composition according to any one of claims 1 to 7 , wherein the thermoplastic resin (a) is a polyamide resin. A molded article formed by melt-molding the thermoplastic resin composition according to any one of claims 1 to 8 . The molded article according to claim 9 , wherein the melt molding is any one selected from injection molding, injection compression molding, and compression molding.