WO2014148636A1 - Water-based primer - Google Patents

Water-based primer Download PDF

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Publication number
WO2014148636A1
WO2014148636A1 PCT/JP2014/057903 JP2014057903W WO2014148636A1 WO 2014148636 A1 WO2014148636 A1 WO 2014148636A1 JP 2014057903 W JP2014057903 W JP 2014057903W WO 2014148636 A1 WO2014148636 A1 WO 2014148636A1
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WIPO (PCT)
Prior art keywords
functional group
water
acrylic polymer
group
based primer
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PCT/JP2014/057903
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French (fr)
Japanese (ja)
Inventor
揚子 松田
隆裕 岡松
Original Assignee
横浜ゴム株式会社
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Publication date
Application filed by 横浜ゴム株式会社 filed Critical 横浜ゴム株式会社
Priority to CN201480017020.8A priority Critical patent/CN105051130B/en
Priority to KR1020157026672A priority patent/KR101616321B1/en
Priority to JP2014549016A priority patent/JP5765491B2/en
Publication of WO2014148636A1 publication Critical patent/WO2014148636A1/en
Priority to PH12015502182A priority patent/PH12015502182A1/en

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4825—Polyethers containing two hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/24—Homopolymers or copolymers of amides or imides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/24—Homopolymers or copolymers of amides or imides
    • C09D133/26—Homopolymers or copolymers of acrylamide or methacrylamide
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/002—Priming paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/08—Polyurethanes from polyethers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
    • C09K3/1021—Polyurethanes or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/54—Aqueous solutions or dispersions

Definitions

  • the present invention relates to an aqueous primer.
  • Patent Document 1 aqueous primer composition for a sealing material containing a self-emulsifying resin having a keto group and / or an aldehyde group and a hydrophilic group.
  • a primer obtained from a conventional latex or emulsion has low water resistance. This is thought to be because when the emulsion particles contained in the emulsion or the like are polymer or have a large particle size, they do not penetrate into the adherend such as mortar. Then, this invention aims at provision of the water-system primer which is excellent in water resistance and adhesiveness.
  • the present inventor contains an acrylic polymer having an anionic functional group and a cationic functional group, the amount of the acrylic polymer is 15% by mass, and 20 ° C. It was found that an aqueous solution having a viscosity of less than 800 mPa ⁇ s becomes a primer layer excellent in water resistance and adhesion, and the present invention was completed.
  • the present invention provides the following 1 to 9.
  • An aqueous solution containing an acrylic polymer having an anionic functional group and a cationic functional group The water-based primer whose viscosity when the quantity of the said acrylic polymer is 15 mass% and is 20 degreeC is less than 800 mPa * s. 2.
  • the water-based primer of the present invention is excellent in water resistance and adhesiveness.
  • the aqueous primer of the present invention is an aqueous solution containing an acrylic polymer having an anionic functional group and a cationic functional group, and the viscosity when the amount of the acrylic polymer is 15% by mass and 20 ° C. is 800 mPas.
  • the water-based primer of the present invention is excellent in water resistance and adhesiveness by including an acrylic polymer.
  • the aqueous primer of the present invention is an aqueous solution containing an acrylic polymer, the amount of the acrylic polymer is 15% by mass, and the viscosity of the aqueous primer at 20 ° C. is less than 800 mPa ⁇ s.
  • the molecular weight of the polymer is small, which indicates that the acrylic polymer can easily penetrate into the adherend (for example, mortar) and / or the above-mentioned anionic functional group and cationic functional group are adhered.
  • adherend for example, mortar
  • anionic functional group and cationic functional group are adhered.
  • the adherend and the primer layer are excellent in water resistance and adhesiveness.
  • the anionic functional group and the cationic functional group of the acrylic polymer are associated to form a salt. In this way, the primer layer itself is strengthened and considered to be excellent in water resistance.
  • the acrylic polymer contained in the water-based primer of the present invention is an amphoteric polymer having an anionic functional group and a cationic functional group, and its main chain is a (meth) acrylic resin.
  • (Meth) acrylic means that it is one or both of acrylic and methacrylic.
  • at least 50 mol% of all monomers forming the acrylic polymer are, for example, (meth) acryloyl groups, (meth) acryloylamine groups (derived from so-called (meth) acrylamide monomers) and (meth) acryloyloxy groups.
  • One preferred embodiment is a monomer having at least one group selected from the group consisting of: Moreover, it is mentioned as one of the aspects with preferable that the principal chain of an acrylic polymer is a (meth) acrylic resin.
  • the anionic functional group can be bonded to the main chain directly or through an organic group.
  • the organic group include a hydrocarbon group that may have a hetero atom such as an oxygen atom, a nitrogen atom, or a sulfur atom.
  • the hydrocarbon group include an aliphatic hydrocarbon group, an alicyclic hydrocarbon group, an aromatic hydrocarbon group, and a combination thereof.
  • the hydrocarbon group may be chain-like or branched, and may have an unsaturated bond.
  • the acrylic polymer is mentioned as one of the preferred embodiments having at least an amide group and a sulfonic acid group in the side chain.
  • An anionic functional group is superior in water resistance and adhesiveness, and is excellent in affinity to an adherend (for example, mortar), from the viewpoint of sulfonic acid (sulfonic acid group, sulfo group) or a salt thereof (for example, sodium salt, Alkali metal salts such as potassium salts) are preferred.
  • the cationic functional group is preferably an amide group from the viewpoint of superior water resistance and adhesiveness.
  • an amide group in a broad sense, an amide group
  • an amide group is —CONH 2 (narrowly defined amide group), —CONHR (where R is a hydrocarbon group, and a hydrocarbon group is as defined above) or —CONR 2 ( R is a hydrocarbon group, which is the same as defined above.
  • the acrylic polymer has —CONH (for example, —CONH—R) or —CON (for example, —CONR 2 ) and sulfonic acid or a salt thereof at one side chain or terminal.
  • a group is removed from the cationic functional group and is included in the anionic functional group.
  • sulfonic acid or a salt thereof is bonded to R in each of the above formulas (at least one or both of them when there are a plurality of R).
  • the combination of the cationic functional group and the anionic functional group is an amide group and a sulfonic acid or a salt thereof from the viewpoint that the resulting primer layer forms a salt that is hardly soluble in water and is superior in water resistance and adhesiveness. Is preferred.
  • the molar ratio of the anionic functional group to the cationic functional group possessed by one molecule of the acrylic polymer is 2:98 to 16:84 from the viewpoint that water resistance and adhesion are excellent, and the aqueous primer tends to be an aqueous solution. Is more preferable, and 4:96 to 10:90 is more preferable, and 4:96 to 5:95 is still more preferable.
  • the total number of moles of anionic functional group and cationic functional group possessed by one acrylic polymer molecule is superior in water resistance and adhesion, and from the viewpoint that the aqueous primer becomes an aqueous solution and excellent in wettability, one acrylic polymer molecule 3% or more and 100% or less of the total number of moles of the monomers forming the.
  • the amount of each group possessed by all monomers used in producing the acrylic polymer is reflected almost as it is in the amount of anionic functional group and cationic functional group possessed by the acrylic polymer. To do. Moreover, the anionic functional group and cationic functional group which an acrylic polymer has are derived from a monomer, and those derived from a polymerization initiator are not included.
  • the weight average molecular weight of the acrylic polymer is preferably from 5,000 to 50,000, preferably from 10,000 to 45,000, from the viewpoints of excellent water resistance and adhesion, and the aqueous primer becomes an aqueous solution and excellent wettability. Is more preferably 20,000 to 45,000.
  • the aqueous primer of the present invention is an aqueous solution containing an acrylic polymer.
  • the acrylic polymer is dissolved in water.
  • the viscosity of the water-based primer of the present invention is less than 800 mPa ⁇ s when the amount (solid content) of the acrylic polymer is 15% by mass in the water-based primer of the present invention and 20 ° C., and is water resistant and adhesive. From the viewpoint of being more excellent, it is preferably 200 to 790 mPa ⁇ s, more preferably 300 to 780 mPa ⁇ s.
  • the amount of water in the aqueous primer of the present invention is preferably 65 to 95% by mass in the aqueous primer, more preferably 65 to 90% by mass, and even more preferably 70 to 90% by mass. 80 to 90% by mass is particularly preferable.
  • the amount of the acrylic polymer (solid content) is preferably 5 to 35% by mass in the water-based primer, more preferably 10 to 35% by mass, from the viewpoint of superior water resistance and adhesion.
  • the content is more preferably 10 to 30% by mass, and particularly preferably 10 to 20% by mass.
  • the aqueous primer of the present invention is not particularly limited for its production.
  • it can be produced by polymerizing (aqueous polymerization) a monomer containing at least a vinyl monomer having an anionic functional group and a vinyl monomer having a cationic functional group in water in the presence of a polymerization initiator.
  • vinyl monomers having an anionic functional group are copolymerizable with (meth) acrylic monomers and (meth) acrylic monomers, other than (meth) acrylic monomers These monomers are mentioned.
  • the (meth) acrylic monomer includes, for example, CH 2 ⁇ CR— (where R is a hydrogen atom or a methyl group), a (meth) acryloyl group, a (meth) acryloyloxy group.
  • the monomer copolymerizable with the (meth) acrylic monomer is, for example, a vinyl functional group such as CH 2 ⁇ CR— (R is a hydrogen atom or a methyl group) in addition to an anionic functional group or a cationic functional group.
  • the cationic functional group-containing polymerizable monomer may be a compound having at least one cationic functional group and at least one vinyl polymerizable group.
  • the cationic functional group include an amide group (broadly defined amide group).
  • the amide group include —CONH 2 (narrow amide group), —CONHR (R is a hydrocarbon group.
  • the hydrocarbon group is as defined above), —CONR 2 (R is a hydrocarbon group).
  • the hydrocarbon group has the same meaning as described above.
  • Examples of —CONR 2 include a dialkylamide group such as a dimethylamide group.
  • Examples of the vinyl polymerizable group include a vinyl functional group such as CH 2 ⁇ CR— (R is a hydrogen atom or a methyl group); a (meth) acryloyl group and a (meth) acryloyloxy group.
  • the cationic functional group and the vinyl polymerizable group can be bonded by a single bond or through an organic group.
  • the organic group is as defined above. Specific examples include alkyl groups having 1 to 10 carbon atoms. When CH 2 ⁇ CR— and an amide group in a broad sense are bonded by a single bond, a (meth) acrylamide monomer can be formed.
  • Examples of the cationic functional group-containing polymerizable monomer include (meth) acrylamide monomers. Specific examples include compounds represented by the formula: CH 2 ⁇ CR 1 —CONR 2 2 .
  • R 1 is a hydrogen atom or a methyl group
  • R 2 is independently a hydrogen atom or a hydrocarbon group.
  • the hydrocarbon group is as defined above.
  • Specific cationic functional group-containing polymerizable monomers include, for example, (meth) acrylamide (CH 2 ⁇ CR 1 —CONH 2 ); N-monoalkyl (meth) acrylamide; N, N-dialkyl such as dimethylacrylamide. (Meth) acrylamide is mentioned.
  • the anionic functional group-containing polymerizable monomer may be a compound having at least one anionic functional group and at least one vinyl polymerizable group.
  • anionic functional group sulfonic acid and its salt are mentioned, for example.
  • the vinyl polymerizable group has the same meaning as described above.
  • the anionic functional group and the vinyl polymerizable group can be bonded by a single bond or through an organic group.
  • the organic group is as defined above.
  • anionic functional group-containing polymerizable monomer examples include compounds represented by the formula 1: CH 2 ⁇ CR 1 —CONH m — [R 2 — (SO 3 X) a ] n , formula 2: CH 2 ⁇ CR A compound represented by 1 -R 3- (SO 3 X) a is mentioned.
  • R 1 is a hydrogen atom or a methyl group
  • R 2 is a hydrocarbon group.
  • the hydrocarbon group is as defined above.
  • m is 0 or 1
  • n is 1 or 2
  • m + n is 2.
  • X is a hydrogen atom or an alkali metal (for example, sodium, potassium), a is 0 or 1, and n is 2, the two R 2 — (SO 3 X) may be the same or different ( However, when n is 2, two a's are not 0 at the same time.)
  • the number of —SO 3 X in one molecule can be 1 or 2.
  • R 1 is a hydrogen atom or a methyl group
  • R 3 is a hydrocarbon group.
  • the hydrocarbon group is as defined above.
  • X is a hydrogen atom or an alkali metal (for example, sodium, potassium), and a is 1 or 2.
  • anionic functional group-containing polymerizable monomer examples include a compound represented by the above formula 1 such as acrylamide t-butylsulfonic acid; methallylsulfonic acid [CH 2 ⁇ C (Me) —CH 2 — Compounds represented by the above formula 2 such as SO 3 H]; and salts thereof (for example, sodium salts).
  • the molar ratio between the anionic functional group of the anionic functional group-containing polymerizable monomer and the cationic functional group of the cationic functional group-containing polymerizable monomer is excellent in water resistance and adhesion, and the aqueous primer becomes an aqueous solution. From the viewpoint of excellent wettability to the body, it is preferably 2:98 to 16:84, more preferably 4:96 to 10:90, and further preferably 4:96 to 5:95. preferable.
  • a hydrophilic polymerization initiator is mentioned, for example, Specifically, an ammonium persulfate and / or azobis cyanovaleric acid are mentioned, for example.
  • the amount of the polymerization initiator can be a conventionally known amount.
  • the acrylic polymer can be produced, for example, by adding a (meth) acrylic monomer and a polymerization initiator to water and polymerizing the mixture under stirring at 50 to 80 ° C.
  • the obtained aqueous solution can be used as it is as the aqueous primer of the present invention. Water can be removed or added as needed.
  • the water-based primer of the present invention can further contain additives as necessary within the range not impairing the object and effects of the present invention, in addition to the above components.
  • the aqueous primer of the present invention may be an aqueous primer composition.
  • additives include tackifiers, fillers, pigments, antiblocking agents, dispersion stabilizers, thixotropic agents, viscosity modifiers, leveling agents, antigelling agents, light stabilizers, antiaging agents, and antioxidants. UV absorbers, plasticizers, lubricants, antistatic agents, reinforcing materials, flame retardants, catalysts, antifoaming agents, thickeners, dispersants, surfactants, rheology modifiers.
  • the amount of the additive is not particularly limited.
  • the water-based primer of the present invention can be a completely solvent-free type (a completely organic solvent-free type) or an environment-friendly type.
  • the production of the water-based primer of the present invention is not particularly limited.
  • it can manufacture by mixing an additive with the aqueous solution manufactured as mentioned above.
  • the water-based primer of the present invention can be used as, for example, a sealant (for example, for construction) or an adhesive primer.
  • An example of the sealant is a urethane sealant.
  • the urethane sealant composition used to form the urethane sealant is not particularly limited.
  • a urethane-based sealant composition containing a urethane prepolymer obtained by reacting a polyisocyanate such as polymeric MDI (methylene diisocyanate) with a polyol such as polypropylene glycol can be mentioned.
  • the urethane prepolymers can be used alone or in combination of two or more.
  • Examples of the member (adhered body) to which the water-based primer of the present invention can be applied include, for example, glass; various metals such as aluminum, anodized aluminum, iron, galvanized steel, copper and stainless steel; and porous materials such as mortar.
  • the method for applying the adherend to the aqueous primer of the present invention is not particularly limited.
  • coating, immersion, and spray are mentioned.
  • a primer drying step can be provided if necessary.
  • the drying temperature in the primer drying step can be 5 to 100 ° C.
  • the drying method is not particularly limited.
  • ⁇ Waterproof crosscut evaluation> A water resistance test was performed by immersing the test specimen prepared as described above in 20 ° C. water for 7 days, and a cross-cut peel test similar to the above was performed using the test specimen after the water resistance test. The results are shown in each table.
  • ⁇ Water-resistant cross-cut evaluation criteria> Most preferably, the number of base layers of the primer layer remaining on the test body is 100, that is, the primer layer was not peeled off from the test body at all. If it is 60 or more, it is a practical level.
  • Table 1 shows acrylamide as a cationic functional group-containing polymerizable monomer, acrylamide t-butyl sulfonic acid or sodium methallyl sulfonate as an anionic functional group-containing polymerizable monomer, and a polymerization initiator (Table 1 and Table 2 are mainly used in different types of polymerization initiators) in the amounts shown in the table (monomer is mol%, polymerization initiator is parts by mass). The amount of water used in the polymerization was 90 parts by mass with respect to 10 parts by mass of the total amount of monomers.
  • a monomer and a polymerization initiator were put in water, radical polymerization was performed for 6 hours while stirring at 70 ° C., and the polymerization was stopped after 6 hours to obtain an aqueous solution containing an acrylic polymer.
  • a water-based primer was prepared by adjusting the amount of water so that the amount (concentration) of the acrylic polymer in the aqueous solution obtained was 15% by mass.
  • ⁇ Weight average molecular weight of acrylic polymer> The aqueous solution obtained as described above was dried, and the weight average molecular weight of the acrylic polymer obtained after drying was measured in terms of standard polystyrene by gel permeation chromatography (GPC) using tetrahydrofuran (THF) as a solvent. . The results are shown in each table.
  • ⁇ Viscosity of water-based primer> The viscosity at 20 ° C. of the water-based primer obtained as described above was measured using a B-type viscometer. The results are shown in each table
  • Comparative Example 1 which does not have an anionic functional group and contains a polymer having a viscosity at 20 ° C. of 800 mPa ⁇ s or more, has poor adhesion in the normal state and has water resistance. There was no sex. Comparative Examples 2-4, 6 and 7 containing a polymer having a viscosity at 20 ° C. of 800 mPa ⁇ s or more had poor normal adhesion and water resistance, or poor normal adhesion and no water resistance. It was. Comparative Example 5 containing an acrylic polymer having no cationic functional group was not water resistant. On the other hand, Examples 1 to 16 are excellent in water resistance and adhesiveness.

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  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
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  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
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  • Sealing Material Composition (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The purpose of the invention is to provide a water-based primer having excellent water resistance. The invention is a water-based primer that is an aqueous solution containing an acrylic polymer having an anionic functional group and a cationic functional group; the amount of this acrylic polymer is 15 mass%, and the viscosity at 20°C is less than 800 mPa∙s.

Description

水系プライマーWater based primer
　本発明は水系プライマーに関する。 The present invention relates to an aqueous primer.
　従来、建築用プライマーとしてゴムラテックスや樹脂エマルジョンが使用されている。
　本願出願人はこれまでにケト基および／またはアルデヒド基と親水性基とを有する自己乳化型樹脂等を含有するシーリング材用水系プライマー組成物（特許文献１）を提案している。 Conventionally, rubber latex or resin emulsion has been used as a building primer.
The applicant of the present application has proposed an aqueous primer composition for a sealing material (Patent Document 1) containing a self-emulsifying resin having a keto group and / or an aldehyde group and a hydrophilic group.
特開２０１１－０４６９２０号公報JP 2011-046920 A
　しかし、従来のようなラテックスやエマルジョンから得られるプライマーは耐水性が低いという問題点を本願発明者は見出した。これはエマルジョン等に含まれるエマルジョン粒子が高分子であったりその粒子径が大きい場合、モルタルのような被着体にしみ込まないためと考えられた。
　そこで、本願発明は耐水性、接着性に優れる水系プライマーの提供を目的とする。 However, the present inventor has found that a primer obtained from a conventional latex or emulsion has low water resistance. This is thought to be because when the emulsion particles contained in the emulsion or the like are polymer or have a large particle size, they do not penetrate into the adherend such as mortar.
Then, this invention aims at provision of the water-system primer which is excellent in water resistance and adhesiveness.
　本発明者は、上記課題を解決すべく鋭意研究した結果、アニオン性官能基とカチオン性官能基とを有するアクリル系ポリマーを含有し、前記アクリル系ポリマーの量が１５質量％でありかつ２０℃であるときの粘度が８００ｍＰａ・ｓ未満である水溶液が、耐水性、接着性に優れるプライマー層となることを見出し、本発明を完成させた。 As a result of intensive studies to solve the above problems, the present inventor contains an acrylic polymer having an anionic functional group and a cationic functional group, the amount of the acrylic polymer is 15% by mass, and 20 ° C. It was found that an aqueous solution having a viscosity of less than 800 mPa · s becomes a primer layer excellent in water resistance and adhesion, and the present invention was completed.
　すなわち、本発明は、下記１～９を提供する。
　１．　アニオン性官能基とカチオン性官能基とを有するアクリル系ポリマーを含有する水溶液であり、
　前記アクリル系ポリマーの量が１５質量％であり２０℃であるときの粘度が８００ｍＰａ・ｓ未満である、水系プライマー。
　２．　前記アニオン性官能基が、スルホン酸又はその塩である上記１に記載の水系プライマー。
　３．　前記カチオン性官能基が、アミド基である上記１又は２に記載の水系プライマー。
　４．　前記アニオン性官能基と前記カチオン性官能基のモル比が２：９８～１６：８４である上記１～３のいずれかに記載の水系プライマー。
　５．　前記アクリル系ポリマーが、水中でアニオン性官能基を有するビニル系モノマーとカチオン性官能基を有するビニル系モノマーとを少なくとも含むモノマーを重合させることによって製造される、上記１～４のいずれかに記載の水系プライマー。
　６．　前記アクリル系ポリマーを製造する際に使用される重合開始剤が、過硫酸アンモニウム及び／又はアゾビスシアノ吉草酸である上記１～５のいずれかに記載の水系プライマー。
　７．　前記アクリル系ポリマーの重量平均分子量が、５，０００～５０，０００である上記１～６のいずれかに記載の水系プライマー。
　８．　ウレタン系シーラントに使用される上記１～７のいずれかに記載の水系プライマー。
　９．　被着体がモルタルである上記１～８のいずれかに記載の水系プライマー。 That is, the present invention provides the following 1 to 9.
1. An aqueous solution containing an acrylic polymer having an anionic functional group and a cationic functional group,
The water-based primer whose viscosity when the quantity of the said acrylic polymer is 15 mass% and is 20 degreeC is less than 800 mPa * s.
2. 2. The water-based primer according to 1 above, wherein the anionic functional group is sulfonic acid or a salt thereof.
3. 3. The aqueous primer according to 1 or 2 above, wherein the cationic functional group is an amide group.
4). 4. The water-based primer according to any one of 1 to 3 above, wherein a molar ratio of the anionic functional group to the cationic functional group is 2:98 to 16:84.
5. 5. The acrylic polymer according to any one of the above 1 to 4, wherein the acrylic polymer is produced by polymerizing a monomer containing at least a vinyl monomer having an anionic functional group and a vinyl monomer having a cationic functional group in water. Water based primer.
6). 6. The water-based primer according to any one of 1 to 5 above, wherein the polymerization initiator used for producing the acrylic polymer is ammonium persulfate and / or azobiscyanovaleric acid.
7). 7. The water-based primer according to any one of 1 to 6 above, wherein the acrylic polymer has a weight average molecular weight of 5,000 to 50,000.
8). 8. The water-based primer according to any one of 1 to 7 above, which is used for a urethane-based sealant.
9. 9. The water-based primer according to any one of 1 to 8 above, wherein the adherend is mortar.
　本発明の水系プライマーは耐水性、接着性に優れる。 The water-based primer of the present invention is excellent in water resistance and adhesiveness.
　本発明について以下詳細に説明する。
　本発明の水系プライマーは、アニオン性官能基とカチオン性官能基とを有するアクリル系ポリマーを含有する水溶液であり、前記アクリル系ポリマーの量が１５質量％であり２０℃であるときの粘度が８００ｍＰａ・ｓ未満である、水系プライマーである。
　本発明の水系プライマーは、アクリル系ポリマーを含むことによって、耐水性、接着性に優れる。
　本発明の水系プライマーは、アクリル系ポリマーを含有する水溶液であり、アクリル系ポリマーの量が１５質量％であり２０℃での水系プライマーの粘度が８００ｍＰａ・ｓ未満であることは、系内のアクリル系ポリマーの分子量が小さいことを示し、このことから、アクリル系ポリマーが被着体（例えば、モルタル）にしみ込むみやすいこと、及び／又は、上述のアニオン性官能基とカチオン性官能基とが被着体と相互作用及び／又は反応することによって、被着体とプライマー層との耐水性、接着性に優れると考えられる。
　また、本発明の水系プライマーを用いてプライマー層を形成する際、水系プライマーから水分が除去されると、アクリル系ポリマーが有する、アニオン性官能基とカチオン性官能基とが会合して塩を形成し、これによってプライマー層自体が強固になり、耐水性に優れると考えられる。
　また、上述のアニオン性官能基とカチオン性官能基とがシーラントと相互作用及び／又は反応することによって、シーラントとプライマー層との耐水性、接着性に優れると考えられる。
　なお上記のメカニズムは本願発明者の推測であり、メカニズムが上記以外のものであっても本発明の範囲内である。 The present invention will be described in detail below.
The aqueous primer of the present invention is an aqueous solution containing an acrylic polymer having an anionic functional group and a cationic functional group, and the viscosity when the amount of the acrylic polymer is 15% by mass and 20 ° C. is 800 mPas. A water-based primer that is less than s.
The water-based primer of the present invention is excellent in water resistance and adhesiveness by including an acrylic polymer.
The aqueous primer of the present invention is an aqueous solution containing an acrylic polymer, the amount of the acrylic polymer is 15% by mass, and the viscosity of the aqueous primer at 20 ° C. is less than 800 mPa · s. This indicates that the molecular weight of the polymer is small, which indicates that the acrylic polymer can easily penetrate into the adherend (for example, mortar) and / or the above-mentioned anionic functional group and cationic functional group are adhered. By interacting and / or reacting with the body, it is considered that the adherend and the primer layer are excellent in water resistance and adhesiveness.
In addition, when forming a primer layer using the water-based primer of the present invention, if water is removed from the water-based primer, the anionic functional group and the cationic functional group of the acrylic polymer are associated to form a salt. In this way, the primer layer itself is strengthened and considered to be excellent in water resistance.
Moreover, it is thought that the water resistance and adhesiveness of a sealant and a primer layer are excellent when the above-mentioned anionic functional group and a cationic functional group interact and / or react with a sealant.
In addition, said mechanism is a presumption of this inventor, and even if a mechanism is other than the above, it is in the scope of the present invention.
　アクリル系ポリマーについて以下に説明する。
　本発明の水系プライマーに含有されるアクリル系ポリマーは、アニオン性官能基とカチオン性官能基とを有する両性のポリマーであり、その主鎖が（メタ）アクリル系樹脂である。（メタ）アクリルは、アクリル及びメタクリルのうちの一方又は両方であることを意味する。
　本発明において、アクリル系ポリマーを形成する全モノマーの５０モル％以上が例えば、（メタ）アクリロイル基、（メタ）アクリロイルアミン基（いわゆる（メタ）アクリルアミド系モノマーに由来）及び（メタ）アクリロイルオキシ基からなる群から選ばれる少なくとも１種の基を有するモノマーであるのが好ましい態様の１つとして挙げられる。また、アクリル系ポリマーの主鎖は（メタ）アクリル樹脂であるのが好ましい態様の１つとして挙げられる。 The acrylic polymer will be described below.
The acrylic polymer contained in the water-based primer of the present invention is an amphoteric polymer having an anionic functional group and a cationic functional group, and its main chain is a (meth) acrylic resin. (Meth) acrylic means that it is one or both of acrylic and methacrylic.
In the present invention, at least 50 mol% of all monomers forming the acrylic polymer are, for example, (meth) acryloyl groups, (meth) acryloylamine groups (derived from so-called (meth) acrylamide monomers) and (meth) acryloyloxy groups. One preferred embodiment is a monomer having at least one group selected from the group consisting of: Moreover, it is mentioned as one of the aspects with preferable that the principal chain of an acrylic polymer is a (meth) acrylic resin.
　アニオン性官能基は主鎖と直接又は有機基を介して結合することができる。カチオン性官能基も同様である。
　本発明において、有機基としては、例えば、酸素原子、窒素原子、硫黄原子のようなヘテロ原子を有してもよい炭化水素基が挙げられる。炭化水素基としては、例えば、脂肪族炭化水素基、脂環式炭化水素基、芳香族炭化水素基、これらの組み合わせが挙げられる。炭化水素基は、鎖状、分岐状のいずれでもよく、不飽和結合を有してもよい。
　アクリル系ポリマーは、少なくとも側鎖にアミド基及びスルホン酸基を有するのが好ましい態様の１つとして挙げられる。 The anionic functional group can be bonded to the main chain directly or through an organic group. The same applies to the cationic functional group.
In the present invention, examples of the organic group include a hydrocarbon group that may have a hetero atom such as an oxygen atom, a nitrogen atom, or a sulfur atom. Examples of the hydrocarbon group include an aliphatic hydrocarbon group, an alicyclic hydrocarbon group, an aromatic hydrocarbon group, and a combination thereof. The hydrocarbon group may be chain-like or branched, and may have an unsaturated bond.
The acrylic polymer is mentioned as one of the preferred embodiments having at least an amide group and a sulfonic acid group in the side chain.
　アニオン性官能基は、耐水性、接着性により優れ、被着体（例えばモルタル）への親和性に優れるという観点から、スルホン酸（スルホン酸基、スルホ基）又はその塩（例えば、ナトリウム塩、カリウム塩のようなアルカリ金属塩）であるのが好ましい。
　カチオン性官能基は、耐水性、接着性により優れるという観点から、アミド基であるのが好ましい。
　本発明において、アミド基（広義のアミド基）は－ＣＯＮＨ2（狭義のアミド基）、－ＣＯＮＨＲ（Ｒは炭化水素基である。炭化水素基は上記と同義である。）又は－ＣＯＮＲ2（Ｒは炭化水素基である。炭化水素基は上記と同義である。）を意味する（以下同様）。 An anionic functional group is superior in water resistance and adhesiveness, and is excellent in affinity to an adherend (for example, mortar), from the viewpoint of sulfonic acid (sulfonic acid group, sulfo group) or a salt thereof (for example, sodium salt, Alkali metal salts such as potassium salts) are preferred.
The cationic functional group is preferably an amide group from the viewpoint of superior water resistance and adhesiveness.
In the present invention, an amide group (in a broad sense, an amide group) is —CONH 2 (narrowly defined amide group), —CONHR (where R is a hydrocarbon group, and a hydrocarbon group is as defined above) or —CONR 2 ( R is a hydrocarbon group, which is the same as defined above.
　なお、本発明において、アクリル系ポリマーが１つの側鎖又は末端において－ＣＯＮＨ（例えば、上記の－ＣＯＮＨ－Ｒ）又は－ＣＯＮ（例えば、上記の－ＣＯＮＲ2）及びスルホン酸又はその塩を有する場合、このような基は、カチオン性官能基から除かれ、アニオン性官能基に含まれるものとする。具体的には例えば、上記各式のＲ（Ｒが複数ある場合はそのうちの少なくとも一方又は両方）にスルホン酸又はその塩が結合する場合が挙げられる。
　カチオン性官能基とアニオン性官能基との組み合わせは、得られるプライマー層が水に溶けにくい塩を形成して耐水性、接着性により優れるという観点から、アミド基とスルホン酸又はその塩とであるのが好ましい。 In the present invention, the acrylic polymer has —CONH (for example, —CONH—R) or —CON (for example, —CONR 2 ) and sulfonic acid or a salt thereof at one side chain or terminal. Such a group is removed from the cationic functional group and is included in the anionic functional group. Specifically, for example, a case where sulfonic acid or a salt thereof is bonded to R in each of the above formulas (at least one or both of them when there are a plurality of R).
The combination of the cationic functional group and the anionic functional group is an amide group and a sulfonic acid or a salt thereof from the viewpoint that the resulting primer layer forms a salt that is hardly soluble in water and is superior in water resistance and adhesiveness. Is preferred.
　アクリル系ポリマー１分子が有する、アニオン性官能基とカチオン性官能基のモル比は、耐水性、接着性により優れ、水系プライマーが水溶液となりやすいという観点から、２：９８～１６：８４であるのが好ましく、４：９６～１０：９０であるのがより好ましく、４：９６～５：９５であるのがさらに好ましい。
　アクリル系ポリマー１分子が有する、アニオン性官能基とカチオン性官能基の合計モル数は、耐水性、接着性により優れ、水系プライマーが水溶液となり、濡れ性に優れるという観点から、アクリル系ポリマー１分子を形成するモノマーの全モル数の３％以上１００％以下とすることができる。
　本発明において、アクリル系ポリマーを製造する際に使用される全モノマーが有する各基の量が、アクリル系ポリマーが有する、アニオン性官能基とカチオン性官能基の量にほぼそのまま反映されるものとする。
　また、アクリル系ポリマーが有する、アニオン性官能基とカチオン性官能基はモノマー由来のものであり、重合開始剤由来のものは含まれないものとする。 The molar ratio of the anionic functional group to the cationic functional group possessed by one molecule of the acrylic polymer is 2:98 to 16:84 from the viewpoint that water resistance and adhesion are excellent, and the aqueous primer tends to be an aqueous solution. Is more preferable, and 4:96 to 10:90 is more preferable, and 4:96 to 5:95 is still more preferable.
The total number of moles of anionic functional group and cationic functional group possessed by one acrylic polymer molecule is superior in water resistance and adhesion, and from the viewpoint that the aqueous primer becomes an aqueous solution and excellent in wettability, one acrylic polymer molecule 3% or more and 100% or less of the total number of moles of the monomers forming the.
In the present invention, the amount of each group possessed by all monomers used in producing the acrylic polymer is reflected almost as it is in the amount of anionic functional group and cationic functional group possessed by the acrylic polymer. To do.
Moreover, the anionic functional group and cationic functional group which an acrylic polymer has are derived from a monomer, and those derived from a polymerization initiator are not included.
　アクリル系ポリマーの重量平均分子量は、耐水性、接着性により優れ、水系プライマーが水溶液となり、濡れ性に優れるという観点から、５，０００～５０，０００であるのが好ましく、１００００～４５０００であるのがより好ましく、２００００～４５０００であるのがさらに好ましい。 The weight average molecular weight of the acrylic polymer is preferably from 5,000 to 50,000, preferably from 10,000 to 45,000, from the viewpoints of excellent water resistance and adhesion, and the aqueous primer becomes an aqueous solution and excellent wettability. Is more preferably 20,000 to 45,000.
　本発明の水系プライマーは、アクリル系ポリマーを含有する水溶液である。本発明においてアクリル系ポリマーは水に溶解している。 The aqueous primer of the present invention is an aqueous solution containing an acrylic polymer. In the present invention, the acrylic polymer is dissolved in water.
　本発明の水系プライマーの粘度は、アクリル系ポリマーの量（固形分）が本発明の水系プライマー中の１５質量％でありかつ２０℃であるとき、８００ｍＰａ・ｓ未満であり、耐水性、接着性により優れるという観点から、２００～７９０ｍＰａ・ｓであるのが好ましく、３００～７８０ｍＰａ・ｓであるのがより好ましい。 The viscosity of the water-based primer of the present invention is less than 800 mPa · s when the amount (solid content) of the acrylic polymer is 15% by mass in the water-based primer of the present invention and 20 ° C., and is water resistant and adhesive. From the viewpoint of being more excellent, it is preferably 200 to 790 mPa · s, more preferably 300 to 780 mPa · s.
　本発明の水系プライマーの水の量は、当該水系プライマー中の６５～９５質量％であるのが好ましく、６５～９０質量％であるのがより好ましく、７０～９０質量％であるのがさらに好ましく、８０～９０質量％であるのが特に好ましい。
　アクリル系ポリマー（固形分）の量は、耐水性、接着性により優れるという観点から、当該水系プライマー中の５～３５質量％であるのが好ましく、１０～３５質量％であるのがより好ましく、１０～３０質量％であるのがさらに好ましく、１０～２０質量％であるのが特に好ましい。 The amount of water in the aqueous primer of the present invention is preferably 65 to 95% by mass in the aqueous primer, more preferably 65 to 90% by mass, and even more preferably 70 to 90% by mass. 80 to 90% by mass is particularly preferable.
The amount of the acrylic polymer (solid content) is preferably 5 to 35% by mass in the water-based primer, more preferably 10 to 35% by mass, from the viewpoint of superior water resistance and adhesion. The content is more preferably 10 to 30% by mass, and particularly preferably 10 to 20% by mass.
　本発明の水系プライマーはその製造について特に制限されない。例えば、水中で重合開始剤の存在下で、アニオン性官能基を有するビニル系モノマーとカチオン性官能基を有するビニル系モノマーとを少なくとも含むモノマーを重合（水溶液重合）させることによって製造することができる。
　アニオン性官能基を有するビニル系モノマー（アニオン性官能基含有重合性モノマー）としては、例えば、（メタ）アクリル系モノマー、（メタ）アクリル系モノマーと共重合可能であり（メタ）アクリル系モノマー以外のモノマーが挙げられる。カチオン性官能基を有するビニル系モノマー（カチオン性官能基含有重合性モノマー）も同様である。
　（メタ）アクリル系モノマーは、アニオン性官能基又はカチオン性官能基の他に、例えば、ＣＨ2＝ＣＲ－（Ｒは水素原子又はメチル基）、（メタ）アクリロイル基、（メタ）アクリロイルオキシ基を有することができる。（メタ）アクリル系モノマーと共重合可能なモノマーは、アニオン性官能基又はカチオン性官能基の他に、例えば、ＣＨ2＝ＣＲ－（Ｒは水素原子又はメチル基）のようなビニル系官能基を有することができる。 The aqueous primer of the present invention is not particularly limited for its production. For example, it can be produced by polymerizing (aqueous polymerization) a monomer containing at least a vinyl monomer having an anionic functional group and a vinyl monomer having a cationic functional group in water in the presence of a polymerization initiator. .
Examples of vinyl monomers having an anionic functional group (anionic functional group-containing polymerizable monomers) are copolymerizable with (meth) acrylic monomers and (meth) acrylic monomers, other than (meth) acrylic monomers These monomers are mentioned. The same applies to vinyl monomers having a cationic functional group (cationic functional group-containing polymerizable monomer).
In addition to an anionic functional group or a cationic functional group, the (meth) acrylic monomer includes, for example, CH 2 ═CR— (where R is a hydrogen atom or a methyl group), a (meth) acryloyl group, a (meth) acryloyloxy group. Can have. The monomer copolymerizable with the (meth) acrylic monomer is, for example, a vinyl functional group such as CH 2 ═CR— (R is a hydrogen atom or a methyl group) in addition to an anionic functional group or a cationic functional group. Can have.
　カチオン性官能基含有重合性モノマー（（メタ）アクリル系モノマー、これと共重合可能なモノマーを含む。）は、カチオン性官能基を少なくとも１個及びビニル重合性基を少なくとも１個有する化合物であれば特に制限されない。
　カチオン性官能基としては、例えば、アミド基（広義のアミド基）が挙げられる。アミド基としては、例えば、－ＣＯＮＨ2（狭義のアミド基）、－ＣＯＮＨＲ（Ｒは炭化水素基である。炭化水素基は上記と同義である。）、－ＣＯＮＲ2（Ｒは炭化水素基である。炭化水素基は上記と同義である。）が挙げられる。－ＣＯＮＲ2としては例えば、ジメチルアミド基のようなジアルキルアミド基が挙げられる。 The cationic functional group-containing polymerizable monomer (including a (meth) acrylic monomer and a monomer copolymerizable therewith) may be a compound having at least one cationic functional group and at least one vinyl polymerizable group. There is no particular limitation.
Examples of the cationic functional group include an amide group (broadly defined amide group). Examples of the amide group include —CONH 2 (narrow amide group), —CONHR (R is a hydrocarbon group. The hydrocarbon group is as defined above), —CONR 2 (R is a hydrocarbon group). The hydrocarbon group has the same meaning as described above. Examples of —CONR 2 include a dialkylamide group such as a dimethylamide group.
　ビニル重合性基としては、例えば、ＣＨ2＝ＣＲ－（Ｒは水素原子又はメチル基）のようなビニル系官能基；（メタ）アクリロイル基、（メタ）アクリロイルオキシ基が挙げられる。
　カチオン性官能基とビニル重合性基とは単結合で又は有機基を介して結合することができる。有機基は上記と同義である。具体的には例えば、炭素数１～１０のアルキル基が挙げられる。ＣＨ2＝ＣＲ－と広義のアミド基とが単結合で結合する場合、（メタ）アクリルアミド系モノマーを形成することができる。 Examples of the vinyl polymerizable group include a vinyl functional group such as CH 2 ═CR— (R is a hydrogen atom or a methyl group); a (meth) acryloyl group and a (meth) acryloyloxy group.
The cationic functional group and the vinyl polymerizable group can be bonded by a single bond or through an organic group. The organic group is as defined above. Specific examples include alkyl groups having 1 to 10 carbon atoms. When CH 2 ═CR— and an amide group in a broad sense are bonded by a single bond, a (meth) acrylamide monomer can be formed.
　カチオン性官能基含有重合性モノマーとしては、例えば、（メタ）アクリルアミド系モノマーが挙げられる。具体的には例えば、式：ＣＨ2＝ＣＲ1－ＣＯＮＲ2 2で表される化合物が挙げられる。式中、Ｒ1は水素原子又はメチル基であり、Ｒ2はそれぞれ独立に水素原子又は炭化水素基である。炭化水素基は上記と同義である。Ｒ2のうちの少なくとも一方又は両方が炭化水素基である場合、その炭化水素基にスルホン酸又はその塩が結合する化合物はカチオン性官能基含有重合性モノマーから除かれ、アニオン性官能基含有重合性モノマーとして取り扱われる。 Examples of the cationic functional group-containing polymerizable monomer include (meth) acrylamide monomers. Specific examples include compounds represented by the formula: CH 2 ═CR 1 —CONR 2 2 . In the formula, R 1 is a hydrogen atom or a methyl group, and R 2 is independently a hydrogen atom or a hydrocarbon group. The hydrocarbon group is as defined above. When at least one or both of R 2 is a hydrocarbon group, the compound in which the sulfonic acid or a salt thereof is bonded to the hydrocarbon group is removed from the cationic functional group-containing polymerizable monomer, and the anionic functional group-containing polymerization is performed. It is treated as a sex monomer.
　具体的なカチオン性官能基含有重合性モノマーとしては、例えば、（メタ）アクリルアミド（ＣＨ2＝ＣＲ1－ＣＯＮＨ2）；Ｎ－モノアルキル（メタ）アクリルアミド；ジメチルアクリルアミドのようなＮ，Ｎ－ジアルキル（メタ）アクリルアミドが挙げられる。 Specific cationic functional group-containing polymerizable monomers include, for example, (meth) acrylamide (CH 2 ═CR 1 —CONH 2 ); N-monoalkyl (meth) acrylamide; N, N-dialkyl such as dimethylacrylamide. (Meth) acrylamide is mentioned.
　アニオン性官能基含有重合性モノマー（（メタ）アクリル系モノマー、これと共重合可能なモノマーを含む。）は、アニオン性官能基を少なくとも１個及びビニル重合性基を少なくとも１個有する化合物であれば特に制限されない。
　アニオン性官能基としては、例えば、スルホン酸とその塩が挙げられる。
　ビニル重合性基は上記と同義である。アニオン性官能基とビニル重合性基とは単結合で又は有機基を介して結合することができる。有機基は上記と同義である。 The anionic functional group-containing polymerizable monomer (including a (meth) acrylic monomer and a monomer copolymerizable therewith) may be a compound having at least one anionic functional group and at least one vinyl polymerizable group. There is no particular limitation.
As an anionic functional group, sulfonic acid and its salt are mentioned, for example.
The vinyl polymerizable group has the same meaning as described above. The anionic functional group and the vinyl polymerizable group can be bonded by a single bond or through an organic group. The organic group is as defined above.
　アニオン性官能基含有重合性モノマーとしては、例えば、式１：ＣＨ2＝ＣＲ1－ＣＯＮＨm－［Ｒ2－（ＳＯ3Ｘ）a］nで表される化合物、式２：ＣＨ2＝ＣＲ1－Ｒ3－（ＳＯ3Ｘ）aで表される化合物が挙げられる。
式１：ＣＨ2＝ＣＲ1－ＣＯＮＨm－［Ｒ2－（ＳＯ3Ｘ）a］n
　式１中、Ｒ1は水素原子又はメチル基であり、Ｒ2は炭化水素基である。炭化水素基は上記と同義である。ｍは０又は１であり、ｎは１又は２であり、ｍ＋ｎは２である。Ｘは水素原子又はアルカリ金属（例えば、ナトリウム、カリウム）であり、ａは０又は１であり、ｎが２である場合、２つのＲ2－（ＳＯ3Ｘ）は同じでも異なってもよい（ただし、ｎが２である場合、２つのａは同時に０ではない。）。１分子中の－ＳＯ3Ｘの数は１又は２とすることができる。 Examples of the anionic functional group-containing polymerizable monomer include compounds represented by the formula 1: CH 2 ═CR 1 —CONH m — [R 2 — (SO 3 X) a ] n , formula 2: CH 2 ═CR A compound represented by 1 -R 3- (SO 3 X) a is mentioned.
Formula 1: CH 2 ═CR 1 —CONH m — [R 2 — (SO 3 X) a ] n
In Formula 1, R 1 is a hydrogen atom or a methyl group, and R 2 is a hydrocarbon group. The hydrocarbon group is as defined above. m is 0 or 1, n is 1 or 2, and m + n is 2. When X is a hydrogen atom or an alkali metal (for example, sodium, potassium), a is 0 or 1, and n is 2, the two R 2 — (SO 3 X) may be the same or different ( However, when n is 2, two a's are not 0 at the same time.) The number of —SO 3 X in one molecule can be 1 or 2.
式２：ＣＨ2＝ＣＲ1－Ｒ3－（ＳＯ3Ｘ）a
　式２中、Ｒ1は水素原子又はメチル基であり、Ｒ3は炭化水素基である。炭化水素基は上記と同義である。Ｘは水素原子又はアルカリ金属（例えば、ナトリウム、カリウム）であり、ａは１又は２である。 Formula 2: CH 2 = CR 1 -R 3- (SO 3 X) a
In Formula 2, R 1 is a hydrogen atom or a methyl group, and R 3 is a hydrocarbon group. The hydrocarbon group is as defined above. X is a hydrogen atom or an alkali metal (for example, sodium, potassium), and a is 1 or 2.
　具体的なアニオン性官能基含有重合性モノマーとしては、例えば、アクリルアミドｔ－ブチルスルホン酸のような上記式１で表される化合物；メタリルスルホン酸［ＣＨ2＝Ｃ（Ｍｅ）－ＣＨ2－ＳＯ3Ｈ］のような上記式２で表される化合物；これらの塩（例えばナトリウム塩）が挙げられる。 Specific examples of the anionic functional group-containing polymerizable monomer include a compound represented by the above formula 1 such as acrylamide t-butylsulfonic acid; methallylsulfonic acid [CH 2 ═C (Me) —CH 2 — Compounds represented by the above formula 2 such as SO 3 H]; and salts thereof (for example, sodium salts).
　アニオン性官能基含有重合性モノマーが有するアニオン性官能基とカチオン性官能基含有重合性モノマーが有するカチオン性官能基のモル比は、耐水性、接着性により優れ、水系プライマーが水溶液となり、被着体への濡れ性に優れるという観点から、２：９８～１６：８４であるのが好ましく、４：９６～１０：９０であるのがより好ましく、４：９６～５：９５であるのがさらに好ましい。 The molar ratio between the anionic functional group of the anionic functional group-containing polymerizable monomer and the cationic functional group of the cationic functional group-containing polymerizable monomer is excellent in water resistance and adhesion, and the aqueous primer becomes an aqueous solution. From the viewpoint of excellent wettability to the body, it is preferably 2:98 to 16:84, more preferably 4:96 to 10:90, and further preferably 4:96 to 5:95. preferable.
　アクリル系ポリマーを製造する際に使用される重合開始剤としては、例えば、親水性重合開始剤が挙げられ、具体的には例えば、過硫酸アンモニウム及び／又はアゾビスシアノ吉草酸が挙げられる。重合開始剤の量は従来公知の量とすることができる。
　アクリル系ポリマーの製造としては例えば、水に（メタ）アクリル系モノマー、重合開始剤を入れ５０～８０℃の条件において撹拌しながら重合させることによって製造することができる。
　得られた水溶液をそのまま本発明の水系プライマーとして使用することができる。必要に応じて水分を除去又は添加することができる。 As a polymerization initiator used when manufacturing an acryl-type polymer, a hydrophilic polymerization initiator is mentioned, for example, Specifically, an ammonium persulfate and / or azobis cyanovaleric acid are mentioned, for example. The amount of the polymerization initiator can be a conventionally known amount.
The acrylic polymer can be produced, for example, by adding a (meth) acrylic monomer and a polymerization initiator to water and polymerizing the mixture under stirring at 50 to 80 ° C.
The obtained aqueous solution can be used as it is as the aqueous primer of the present invention. Water can be removed or added as needed.
　本発明の水系プライマーは、上記成分以外に、本発明の目的、効果を損なわない範囲で、必要に応じてさらに添加剤を含有することができる。本発明の水系プライマーは水系プライマー組成物であってもよい。添加剤としては、例えば、タッキファイヤー、充填剤、顔料、ブロッキング防止剤、分散安定剤、揺変剤、粘度調節剤、レベリング剤、ゲル化防止剤、光安定剤、老化防止剤、酸化防止剤、紫外線吸収剤、可塑剤、滑剤、帯電防止剤、補強材、難燃剤、触媒、消泡剤、増粘剤、分散剤、界面活性剤、レオロジー調整剤が挙げられる。添加剤の量は、特に制限されない。
　本発明の水系プライマーは完全無溶剤型（完全無有機溶剤型）、環境対応型とすることができる。 The water-based primer of the present invention can further contain additives as necessary within the range not impairing the object and effects of the present invention, in addition to the above components. The aqueous primer of the present invention may be an aqueous primer composition. Examples of additives include tackifiers, fillers, pigments, antiblocking agents, dispersion stabilizers, thixotropic agents, viscosity modifiers, leveling agents, antigelling agents, light stabilizers, antiaging agents, and antioxidants. UV absorbers, plasticizers, lubricants, antistatic agents, reinforcing materials, flame retardants, catalysts, antifoaming agents, thickeners, dispersants, surfactants, rheology modifiers. The amount of the additive is not particularly limited.
The water-based primer of the present invention can be a completely solvent-free type (a completely organic solvent-free type) or an environment-friendly type.
　本発明の水系プライマーはその製造について特に制限されない。例えば、上述のとおり製造した水溶液に添加剤を混合することによって製造することができる。 The production of the water-based primer of the present invention is not particularly limited. For example, it can manufacture by mixing an additive with the aqueous solution manufactured as mentioned above.
　本発明の水系プライマーは、例えば、シーラント（例えば建築用）、接着剤のプライマーとして使用することができる。シーラントとしては例えばウレタン系シーラントが挙げられる。
　ウレタン系シーラントを形成するために使用されるウレタン系シーリング材組成物は特に制限されない。例えば、ポリメリックＭＤＩ（メチレンジイソシアネート）のようなポリイソシアネートと、ポリプロピレングリコールのようなポリオールとを反応させることによって得られるウレタンプレポリマーを含むウレタン系シーリング材組成物が挙げられる。ウレタンプレポリマーはそれぞれ単独でまたは２種以上を組み合わせて使用することができる。 The water-based primer of the present invention can be used as, for example, a sealant (for example, for construction) or an adhesive primer. An example of the sealant is a urethane sealant.
The urethane sealant composition used to form the urethane sealant is not particularly limited. For example, a urethane-based sealant composition containing a urethane prepolymer obtained by reacting a polyisocyanate such as polymeric MDI (methylene diisocyanate) with a polyol such as polypropylene glycol can be mentioned. The urethane prepolymers can be used alone or in combination of two or more.
　本発明の水系プライマーを適用することができる部材（被着体）としては、例えば、ガラス；アルミニウム、陽極酸化アルミニウム、鉄、亜鉛鋼板、銅、ステンレスのような各種金属；モルタルのような多孔質材料；フッ素電着、アクリル電着やフッ素塗装、ウレタン塗装、アクリルウレタン塗装された部材；シリコーン系、変成シリコーン系、ウレタン系、ポリサルファイド系、ポリイソブチレン系のようなシーリング材の硬化物；塩化ビニル樹脂、アクリル樹脂；ＮＢＲ、ＥＰＤＭのようなゴム類が挙げられる。 Examples of the member (adhered body) to which the water-based primer of the present invention can be applied include, for example, glass; various metals such as aluminum, anodized aluminum, iron, galvanized steel, copper and stainless steel; and porous materials such as mortar. Material: Fluorine electrodeposition, Acrylic electrodeposition, Fluorine coating, Urethane coating, Acrylic urethane coated material; Hardened material of sealing material such as silicone, modified silicone, urethane, polysulfide, polyisobutylene; vinyl chloride Resins, acrylic resins; rubbers such as NBR and EPDM.
　本発明の水系プライマーを被着体の適用する方法は特に制限されない。例えば、塗布、浸漬、スプレーが挙げられる。
　本発明の水系プライマーを適用したあと、必要に応じてプライマー乾燥工程を設けることができる。プライマー乾燥工程における乾燥温度は５～１００℃とすることができる。乾燥方法は特に制限されない。 The method for applying the adherend to the aqueous primer of the present invention is not particularly limited. For example, application | coating, immersion, and spray are mentioned.
After applying the water-based primer of the present invention, a primer drying step can be provided if necessary. The drying temperature in the primer drying step can be 5 to 100 ° C. The drying method is not particularly limited.
　以下に、実施例を示して本発明を具体的に説明する。ただし、本発明はこれらに限定されない。
＜試験体の作製＞
　被着体として、縦５ｃｍ、横５ｃｍ、厚さ１０ｍｍのモルタルを用いた。下記のとおり製造された水系プライマーを塗布量５０ｇ／ｍ2で、被着体の片面の全面に刷毛を用いて塗布し、２０℃の条件下で６０分間乾燥させ、プライマー層を得た。被着体を２０℃の条件下に３日間おいて硬化させて試験体（モルタル、プライマー層の積層体）を作製した。
＜常態クロスカット評価＞
　上記のとおり作製した試験体を用いて常態クロスカット評価を行った。結果を各表に示す。
　まず、試験体の有効面に、１ｍｍの基盤目１００個（１０×１０）を作り、基盤目上にセロハン粘着テープ（幅１８ｍｍ）を完全に付着させ、テープの一端を塗膜に直角に保ち、瞬間的に引き離する碁盤目剥離試験を行った。碁盤目剥離試験後、試験体に残ったプライマー層の基盤目の数を調べた。
＜常態クロスカット評価基準＞
　試験体に残ったプライマー層の基盤目数が１００、即ち、プライマー層が試験体から全く剥がれなかったものが最も好ましい。９５以上であれば実用レベルである。 Hereinafter, the present invention will be specifically described with reference to examples. However, the present invention is not limited to these.
<Preparation of specimen>
As the adherend, a mortar having a length of 5 cm, a width of 5 cm, and a thickness of 10 mm was used. A water-based primer produced as described below was applied to the entire surface of one side of the adherend with a brush at a coating amount of 50 g / m 2 and dried at 20 ° C. for 60 minutes to obtain a primer layer. The adherend was cured at 20 ° C. for 3 days to prepare a test body (a mortar / primer layer laminate).
<Normal crosscut evaluation>
A normal crosscut evaluation was performed using the test specimen prepared as described above. The results are shown in each table.
First, make 100 1mm bases (10x10) on the effective surface of the specimen, and attach cellophane adhesive tape (width 18mm) completely on the bases, keeping one end of the tape at right angles to the coating. Then, a cross-cut peel test was carried out that instantaneously pulled apart. After the cross-cut peel test, the number of base layers of the primer layer remaining on the test body was examined.
<Standard cross-cut evaluation criteria>
Most preferably, the number of base layers of the primer layer remaining on the test body is 100, that is, the primer layer was not peeled off from the test body at all. If it is 95 or more, it is a practical level.
＜耐水クロスカット評価＞
　上記のとおり作製した試験体を２０℃の水中に７日間浸漬する耐水試験を行い、耐水試験後の試験体を用いて上記と同様の碁盤目剥離試験を行った。結果を各表に示す。
＜耐水クロスカット評価基準＞
　試験体に残ったプライマー層の基盤目数が１００、即ち、プライマー層が試験体から全く剥がれなかったものが最も好ましい。６０以上であれば実用レベルである。 <Waterproof crosscut evaluation>
A water resistance test was performed by immersing the test specimen prepared as described above in 20 ° C. water for 7 days, and a cross-cut peel test similar to the above was performed using the test specimen after the water resistance test. The results are shown in each table.
<Water-resistant cross-cut evaluation criteria>
Most preferably, the number of base layers of the primer layer remaining on the test body is 100, that is, the primer layer was not peeled off from the test body at all. If it is 60 or more, it is a practical level.
＜アクリル系ポリマーの製造＞
　第１表、第２表に示す、カチオン性官能基含有重合性モノマーとしてのアクリルアミド、アニオン性官能基含有重合性モノマーとしてのアクリルアミドｔ－ブチルスルホン酸又はメタリルスルホン酸ナトリウム、及び、重合開始剤（第１表と第２表は主に重合開始剤の種類が異なる。）を同表に示す量（モノマーはモル％、重合開始剤は質量部）で用いた。重合の際使用する水の量は、モノマー全量１０質量部に対して９０質量部とした。まず、水にモノマー、重合開始剤入れて、７０℃の条件下で撹拌しながら６時間ラジカル重合を行い、６時間後重合を停止して、アクリル系ポリマーを含有する水溶液を得た。これに得られた水溶液においてアクリル系ポリマーの量（濃度）が１５質量％となるように水の量を調整して水系プライマーを製造した。
＜アクリル系ポリマーの重量平均分子量＞
　上記のとおり得られた水溶液を乾燥させ、乾燥後に得られたアクリル系ポリマーの重量平均分子量を、テトラヒドロフラン（ＴＨＦ）を溶媒とするゲル・パーミエーション・クロマトグラフィー（ＧＰＣ）によって標準ポリスチレン換算で測定した。結果を各表に示す。
＜水系プライマーの粘度＞
　上記のとおり得られた水系プライマーの２０℃での粘度を、Ｂ型粘度計を用いて測定した。結果を各表に示す。 <Manufacture of acrylic polymer>
Table 1, Table 2 shows acrylamide as a cationic functional group-containing polymerizable monomer, acrylamide t-butyl sulfonic acid or sodium methallyl sulfonate as an anionic functional group-containing polymerizable monomer, and a polymerization initiator (Table 1 and Table 2 are mainly used in different types of polymerization initiators) in the amounts shown in the table (monomer is mol%, polymerization initiator is parts by mass). The amount of water used in the polymerization was 90 parts by mass with respect to 10 parts by mass of the total amount of monomers. First, a monomer and a polymerization initiator were put in water, radical polymerization was performed for 6 hours while stirring at 70 ° C., and the polymerization was stopped after 6 hours to obtain an aqueous solution containing an acrylic polymer. A water-based primer was prepared by adjusting the amount of water so that the amount (concentration) of the acrylic polymer in the aqueous solution obtained was 15% by mass.
<Weight average molecular weight of acrylic polymer>
The aqueous solution obtained as described above was dried, and the weight average molecular weight of the acrylic polymer obtained after drying was measured in terms of standard polystyrene by gel permeation chromatography (GPC) using tetrahydrofuran (THF) as a solvent. . The results are shown in each table.
<Viscosity of water-based primer>
The viscosity at 20 ° C. of the water-based primer obtained as described above was measured using a B-type viscometer. The results are shown in each table.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　第１表、第２表に示されている各成分の詳細は、以下のとおりである。
・アクリルアミド：和光純薬社製
・アクリルアミドｔ－ブチルスルホン酸：和光純薬社製
・メタリルスルホン酸Ｎａ：和光純薬社製
・アゾビスシアノ吉草酸：和光純薬社製
・過硫酸アンモニウム：和光純薬社製 The details of each component shown in Tables 1 and 2 are as follows.
Acrylamide: Wako Pure Chemical Industries, Ltd. Acrylamide t-butyl sulfonic acid: Wako Pure Chemical Industries, Ltd., methallylsulfonic acid Na: Wako Pure Chemical Industries, Ltd. Azobiscyanovaleric acid: Wako Pure Chemical Industries, Ltd. Ammonium persulfate: Wako Pure Chemical Made by company
　第１表、第２表に示す結果から明らかなように、アニオン性官能基を有さず２０℃での粘度が８００ｍＰａ・ｓ以上のポリマーを含む比較例１は常態での接着性が悪く耐水性がなかった。２０℃での粘度が８００ｍＰａ・ｓ以上のポリマーを含む比較例２－４、６、７は、常態での接着性及び耐水性が悪かった、又は、常態での接着性が悪く耐水性がなかった。カチオン性官能基を有さないアクリル系ポリマーを含む比較例５は耐水性がなかった。
　これに対して、実施例１～１６は、耐水性、接着性に優れる。 As is apparent from the results shown in Tables 1 and 2, Comparative Example 1, which does not have an anionic functional group and contains a polymer having a viscosity at 20 ° C. of 800 mPa · s or more, has poor adhesion in the normal state and has water resistance. There was no sex. Comparative Examples 2-4, 6 and 7 containing a polymer having a viscosity at 20 ° C. of 800 mPa · s or more had poor normal adhesion and water resistance, or poor normal adhesion and no water resistance. It was. Comparative Example 5 containing an acrylic polymer having no cationic functional group was not water resistant.
On the other hand, Examples 1 to 16 are excellent in water resistance and adhesiveness.

Claims (9)

  1. 　アニオン性官能基とカチオン性官能基とを有するアクリル系ポリマーを含有する水溶液であり、
    　前記アクリル系ポリマーの量が１５質量％であり２０℃であるときの粘度が８００ｍＰａ・ｓ未満である、水系プライマー。     An aqueous solution containing an acrylic polymer having an anionic functional group and a cationic functional group,
    The water-based primer whose viscosity when the quantity of the said acrylic polymer is 15 mass% and is 20 degreeC is less than 800 mPa * s.
  2. 　前記アニオン性官能基が、スルホン酸又はその塩である請求項１に記載の水系プライマー。 The aqueous primer according to claim 1, wherein the anionic functional group is sulfonic acid or a salt thereof.
  3. 　前記カチオン性官能基が、アミド基である請求項１又は２に記載の水系プライマー。 The water-based primer according to claim 1 or 2, wherein the cationic functional group is an amide group.
  4. 　前記アニオン性官能基と前記カチオン性官能基のモル比が２：９８～１６：８４である請求項１～３のいずれかに記載の水系プライマー。 The aqueous primer according to any one of claims 1 to 3, wherein a molar ratio of the anionic functional group to the cationic functional group is 2:98 to 16:84.
  5. 　前記アクリル系ポリマーが、水中でアニオン性官能基を有するビニル系モノマーとカチオン性官能基を有するビニル系モノマーとを少なくとも含むモノマーを重合させることによって製造される、請求項１～４のいずれかに記載の水系プライマー。 5. The acrylic polymer according to claim 1, wherein the acrylic polymer is produced by polymerizing a monomer containing at least a vinyl monomer having an anionic functional group and a vinyl monomer having a cationic functional group in water. The water-based primer described.
  6. 　前記アクリル系ポリマーを製造する際に使用される重合開始剤が、過硫酸アンモニウム及び／又はアゾビスシアノ吉草酸である請求項１～５のいずれかに記載の水系プライマー。 The water-based primer according to any one of claims 1 to 5, wherein a polymerization initiator used in producing the acrylic polymer is ammonium persulfate and / or azobiscyanovaleric acid.
  7. 　前記アクリル系ポリマーの重量平均分子量が、５，０００～５０，０００である請求項１～６のいずれかに記載の水系プライマー。 The water-based primer according to any one of claims 1 to 6, wherein the acrylic polymer has a weight average molecular weight of 5,000 to 50,000.
  8. 　ウレタン系シーラントに使用される請求項１～７のいずれかに記載の水系プライマー。 The water-based primer according to any one of claims 1 to 7, which is used for urethane-based sealants.
  9. 　被着体がモルタルである請求項１～８のいずれかに記載の水系プライマー。 The water-based primer according to any one of claims 1 to 8, wherein the adherend is mortar.
PCT/JP2014/057903 2013-03-22 2014-03-20 Water-based primer WO2014148636A1 (en)

Priority Applications (4)

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CN201480017020.8A CN105051130B (en) 2013-03-22 2014-03-20 Water system priming paint
KR1020157026672A KR101616321B1 (en) 2013-03-22 2014-03-20 Water-based primer
JP2014549016A JP5765491B2 (en) 2013-03-22 2014-03-20 Water based primer
PH12015502182A PH12015502182A1 (en) 2013-03-22 2015-09-17 Water-based primer

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Publication number Priority date Publication date Assignee Title
JP2018145299A (en) * 2017-03-06 2018-09-20 ニチバン株式会社 Primer for concrete

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JPH03229766A (en) * 1990-02-02 1991-10-11 Kanebo N S C Kk Aqueous primer solution
JPH05247376A (en) * 1992-03-10 1993-09-24 Mitsubishi Yuka Badische Co Ltd Aqueous undercoating agent for inorganic porous substrate
JPH11131054A (en) * 1997-08-26 1999-05-18 Kansai Paint Co Ltd Aqueous curing type sealer and inline coating of ceramic-based substrate
WO2000007960A1 (en) * 1998-08-05 2000-02-17 Kansai Paint Co., Ltd. Water-based sealer for inorganic porous substrate and method of in-line coating
JP2000248226A (en) * 1999-02-26 2000-09-12 Asahi Chem Ind Co Ltd Aqueous wash primer composition

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JP5577830B2 (en) 2009-07-27 2014-08-27 横浜ゴム株式会社 Aqueous primer composition for sealing material, set of sealing material composition and aqueous primer composition for sealing material, and sealing material using the same

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JPH03229766A (en) * 1990-02-02 1991-10-11 Kanebo N S C Kk Aqueous primer solution
JPH05247376A (en) * 1992-03-10 1993-09-24 Mitsubishi Yuka Badische Co Ltd Aqueous undercoating agent for inorganic porous substrate
JPH11131054A (en) * 1997-08-26 1999-05-18 Kansai Paint Co Ltd Aqueous curing type sealer and inline coating of ceramic-based substrate
WO2000007960A1 (en) * 1998-08-05 2000-02-17 Kansai Paint Co., Ltd. Water-based sealer for inorganic porous substrate and method of in-line coating
JP2000248226A (en) * 1999-02-26 2000-09-12 Asahi Chem Ind Co Ltd Aqueous wash primer composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018145299A (en) * 2017-03-06 2018-09-20 ニチバン株式会社 Primer for concrete
JP7027001B2 (en) 2017-03-06 2022-03-01 ニチバン株式会社 Primer for concrete

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JP5765491B2 (en) 2015-08-19
KR101616321B1 (en) 2016-04-28
CN105051130B (en) 2016-11-30
PH12015502182A1 (en) 2016-01-25

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