JP5019029B2 - Coating composition and vehicle interior material - Google Patents

Description

  The present invention relates to a coating material such as an interior material, and in particular, a coating composition used as a coating agent for a vehicle interior material such as a car seat, a car mat, and a ceiling material, and a vehicle coated with the composition. It relates to interior materials.

Conventionally, halogen-based flame retardants such as decabromodiphenyl ether have been used for coating agents used for vehicle interior materials such as car seats, car mats, and ceiling materials in order to impart flame retardancy. In recent years, it has been required to use a non-halogen flame retardant instead of a halogen flame retardant because of environmental problems. However, non-halogen flame retardants have disadvantages such as poor flame retardancy and poor water resistance compared to halogen flame retardants.
In order to solve these problems, it has been attempted to encapsulate a water-soluble non-halogen flame retardant such as ammonium polyphosphate with a coating agent. Japanese Patent Application Laid-Open No. 9-13037 (Patent Document 1) discloses a coating method. Polyamide resin, acrylic resin, or styrene resin is disclosed as the agent, but the obtained flame retardant has insufficient water resistance.

In addition, in JP-A-10-110083 (Patent Document 2) and JP-A-2003-171878 (Patent Document 3), the surface of ammonium polyphosphate is treated with a melamine resin or the like, thereby stabilizing the acrylic emulsion. In fact, the miscibility in emulsions is improved, but if the degree of cure of the treated film is low, the water resistance of the coated surface after being applied to a substrate (cloth) and dried Is not improved. For example, problems have been pointed out such as a slimy feeling when the coating surface comes into contact with water. Further, when the curing degree of the treatment agent is increased, the above problem is improved, but formaldehyde is detected, which causes an environmental problem.
On the other hand, non-halogen flame retardants include metal hydroxides such as aluminum hydroxide and magnesium hydroxide, or phosphates in addition to the above ammonium polyphosphate, but incombustible compared to halogen flame retardants. It is pointed out that it is inferior.
Accordingly, there is a demand for the development of a coating agent containing a non-halogen flame retardant that does not impair the physical properties of the coating agent containing a conventional halogen flame retardant.

JP-A-9-13037 Japanese Patent Laid-Open No. 10-110083 JP 2003-171878 A

  The present invention has been made in view of the above circumstances, and is used for coating compositions, particularly vehicle interior materials such as car seats, car mats and ceiling materials, and impairs the physical properties of coating agents containing conventional halogen flame retardants. It is an object of the present invention to provide a novel coating composition for vehicle interior materials containing a non-halogen flame retardant and a vehicle interior material coated with the composition.

  As a result of intensive investigations to achieve the above object, the present inventors have added a specific amount of a non-halogen flame retardant in which a specific non-halogen flame retardant particle surface is coated with specific hydrophobic inorganic oxide fine particles to a synthetic resin emulsion. As a result, a novel coating composition containing a non-halogen flame retardant having the same physical properties as a coating agent containing a conventional halogen flame retardant is obtained, and coating of vehicle interior materials such as car seats, car mats, and ceiling materials. It has been found that it can be suitably used as an agent, and has led to the present invention.

  Accordingly, the present invention provides one or two kinds of non-halogen flame retardants in which the surface of non-halogen flame retardant particles containing phosphorus and nitrogen is coated with hydrophobic inorganic oxide fine particles with respect to 100 parts by mass of the solid content of the synthetic resin emulsion. A coating composition obtained by adding 1 to 300 parts by mass of the above and a vehicle interior material coated with this composition are provided.

  INDUSTRIAL APPLICABILITY The coating composition of the present invention can be a coating agent containing a novel non-halogen flame retardant that does not impair the physical properties of a coating agent containing a conventional halogen flame retardant, and is particularly suitable for vehicle interiors such as car seats, car mats and ceiling materials. It is used effectively for materials.

  The coating composition of the present invention is a non-halogen flame retardant (hereinafter referred to as “non-halogen flame retardant”) in which the non-halogen flame retardant particle surface containing phosphorus and nitrogen is coated with hydrophobic inorganic oxide fine particles with respect to 100 parts by mass of the solid content of the synthetic resin emulsion. 1 to 300 parts by mass of one or more of hydrophobic inorganic oxide fine particle-coated non-halogen flame retardants.

Synthetic resin emulsions used in the present invention include vinyl chloride resin emulsions, (meth) acrylate resin emulsions, styrene / acrylate copolymer emulsions, urethane resin emulsions, silicone resin emulsions, fluororesin emulsions Examples include emulsions, epoxy resin emulsions, ethylene / vinyl acetate copolymer emulsions, and emulsions such as rubber emulsions such as SBR and NBR. One or more of these may be used. More preferably, a (meth) acrylic acid ester resin emulsion, a styrene / acrylic acid ester copolymer emulsion, a urethane resin emulsion, an ethylene / vinyl acetate copolymer emulsion, or a rubber emulsion such as SBR or NBR is used. In addition, in this invention, (meth) acrylic acid ester resin shows that it is acrylic acid ester resin or methacrylic acid ester resin.
The synthetic resin emulsion described above may be synthesized by emulsion polymerization, or a commercially available synthetic resin emulsion may be used.

  Examples of commercially available synthetic resin emulsions include (meth) acrylic acid ester resin emulsions such as Vinibrand 2598 manufactured by Nissin Chemical Industry Co., Ltd., Aron A-104 manufactured by Toagosei Co., Ltd., and the like. For acid ester copolymer emulsions, Nishin Chemical Industry Co., Ltd. Vinibrand 2590, Clariant Polymer Co., Ltd. Movinyl 975A, etc., for urethane resin emulsions, Dainippon Ink Chemical Co., Ltd. Hydran HW -311, HW-301, Sanyo Kasei Kogyo Co., Ltd. permarine UA-150, etc. are ethylene / vinyl acetate copolymer emulsion, Sumitomo Chemical Co., Ltd. Sumikaflex 400, 752, Kuraray Co., Ltd. Panflex OM-4000 made in Japan is a Japanese emulsion Narusuta SR-100, SR-112 of El (Ltd.), but Nippon Zeon's Nipol 1561, and the like, respectively, this does not apply.

  In addition, when the above-described synthetic resin emulsion is obtained by emulsion polymerization, it is generally synthesized by radical polymerization. In this case, an unsaturated group-containing monomer having radical polymerization ability is used as a raw material monomer.

  Examples of unsaturated group-containing monomers include chlorine-containing monomers such as ethylene, propylene, vinyl chloride, and vinylidene chloride, vinyl carboxylates such as vinyl acetate and vinyl propionate, styrene, and α-methylstyrene. Aromatic vinyl monomers such as conjugated diene monomers such as 1,3-butadiene and 2-methyl-1,3-butadiene, methyl acrylate, ethyl acrylate, butyl acrylate, acrylic acid 2 -Ethylenically unsaturated monocarboxylic acid esters such as ethylhexyl and methyl methacrylate, ethylenically unsaturated dicarboxylic acid esters such as dimethyl itaconate, diethyl maleate, monobutyl maleate, monoethyl fumarate and dibutyl fumarate, acrylic acid , Ethylenically unsaturated monocarboxylic acids such as methacrylic acid and crotonic acid, itaconic acid, Ethylenically unsaturated dicarboxylic acids such as oleic acid and fumaric acid, epoxy group-containing monomers such as glycidyl methacrylate, alcoholic hydroxyl group-containing monomers such as 2-hydroxyethyl methacrylate, alkoxyl group-containing methoxyethyl acrylates Monomers, nitrile group-containing monomers such as acrylonitrile, amide group-containing monomers such as acrylamide, amino group-containing monomers such as dimethylaminoethyl methacrylate, divinylbenzene, allyl methacrylate, etc. Examples thereof include a monomer having two or more ethylenically unsaturated groups.

  Any known emulsion polymerization method can be employed for the emulsion polymerization. The above monomers and other polymerization aids (for example, emulsifiers such as alkyl sulfate esters, polymerization initiators such as ammonium persulfate, chain transfer agents such as mercaptans, pH adjusters such as sodium carbonate, various antifoaming agents, etc. ) May be added all at once in the initial stage, may be added continuously, or a part thereof may be added continuously or divided during the polymerization.

Examples of the emulsifier used in the emulsion polymerization include the following surfactants (1) to (4), and one or more of these surfactants are used.
(1) Anionic surfactants such as alkyl sulfates, polyoxyethylene alkyl ether sulfates, alkyl benzene sulfonates, alkyl diphenyl ether disulfonates, alkyl naphthalene sulfonates, fatty acid salts, dialkyl sulfosuccinates, alkyls Surfactants such as phosphate ester salts and polyoxyethylene alkylphenyl phosphate ester salts.
(2) Nonionic surfactants such as polyoxyethylene alkyl phenyl ethers, polyoxyethylene alkyl ethers, polyoxyethylene fatty acid esters, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyethylene derivatives , Glycerin fatty acid esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkylamines, alkyl alkanolamides, or acetylene alcohols, acetylene glycols and their ethylene oxide adduct surfactants.
(3) Cationic surfactants such as alkyltrimethylammonium chloride, dialkyldimethylammonium chloride, alkylbenzylammonium chloride, alkylamine salts and the like.
(4) Polymerizable surfactants having a double bond having radical polymerization ability in the molecule, such as alkylallylsulfosuccinate, methacryloyl polyoxyalkylene sulfate, polyoxyethylene nonylpropenyl phenyl ether sulfate, etc. Polymerizable surfactant.

  The amount of these surfactants to be used is generally 0.3 to 20% by mass, preferably 0.5 to 10% by mass, based on the monomer.

  Examples of the polymerization initiator used in the emulsion polymerization include persulfates such as ammonium persulfate and potassium persulfate, azo compounds such as 2,2′-diamidino-2,2′-azopropane dihydrochloride, azobisisobutyronitrile and the like. , Peroxides such as cumene hydroperoxide, benzoyl peroxide and hydrogen peroxide. Moreover, a well-known redox-type initiator, for example, potassium persulfate, sodium hydrogensulfite, etc. are mentioned. The usage-amount of a polymerization initiator is 0.1-5 mass% normally with respect to the said monomer, Preferably it is 0.2-2 mass%.

  The polymerization temperature for carrying out the emulsion polymerization is usually 10 to 90 ° C., preferably 50 to 80 ° C., and the polymerization time is usually 3 to 20 hours. This polymerization is preferably performed in an atmosphere of an inert gas such as nitrogen gas.

  The flame retardant used in the coating composition of the present invention is a non-halogen flame retardant in which the surface of non-halogen flame retardant particles containing phosphorus and nitrogen is coated with hydrophobic inorganic oxide fine particles.

  Examples of the flame retardant containing only phosphorus include phosphoric acid esters and the like. However, the flame retardant is inferior to the halogen-based flame retardant, and the present inventors have used phosphorus and nitrogen as flame retardant elements. It has been found that the flame retardant effect is improved by selecting a flame retardant containing both of the above.

  Non-halogen flame retardant particles containing phosphorus and nitrogen include flame retardants such as guanidine phosphate, ammonium phosphate, melamine phosphate, ammonium polyphosphate, melamine surface-treated ammonium polyphosphate, silicon compound surface-treated ammonium polyphosphate. 1 type, or 2 or more types of these are used. More preferably, ammonium polyphosphate is used. In addition, a commercial item can be used as ammonium polyphosphate. Moreover, it is preferable to use a flame retardant particle having an average particle diameter of 3 to 25 μm, particularly 5 to 18 μm. In the present invention, the average particle diameter can be determined as a weight average value (or median diameter) or the like using a particle size distribution measuring device or the like by, for example, laser light diffraction. The silicon compound surface-treated ammonium polyphosphate is an alkoxysilane containing a functional group such as a carboxyl group or an amino group or a partial hydrolyzate thereof, and is obtained by coating or coating ammonium polyphosphate by a submerged drying method. preferable.

  By coating the surface of the non-halogen flame retardant particles containing phosphorus and nitrogen with hydrophobic inorganic oxide fine particles, an effect of exhibiting good water repellency can be obtained.

  The hydrophobic inorganic oxide fine particle used in the present invention is not particularly limited as long as it is a hydrophobic (having a hydrophobic group) inorganic oxide. Hydrophobic silicon oxide, titanium oxide, zinc oxide, aluminum oxide And cerium oxide. Particularly preferably, hydrophobic silicon oxide (silica) is most preferable in terms of cost and performance.

  The silica to be used is roughly classified into a method obtained by decomposition of silicon halide and a method obtained by heating and reducing silica sand and then oxidizing it with air. Silica and sodium silicate are directly mixed with a mineral acid such as sulfuric acid. There are two types of wet process silica, represented by the method obtained by decomposition. Further, sol-gel silica obtained by hydrolysis of alkoxysilane may be used, and any silica may be an organosilazane such as hexamethyldisilazane, an organoalkoxysilane such as methyltrimethoxysilane, or an organopolysiloxane such as organohydrogenpolysiloxane. As long as it has a hydrophobic group such as an alkyl group such as a methyl group.

As a measure of hydrophobicity, it is preferable to show a value of 45 or more (preferably 45 to 70) on a scale of degree of hydrophobicity. Here, the degree of hydrophobicity is determined by a methanol titration test according to the following method. The value expressed by the percentage of methanol in the mixture of methanol and water when the silica fine particles added to the water are wet. The higher this value, the higher the hydrophobicity, and the lower the value, the higher the hydrophilicity. It shows that.
Hydrophobic degree measurement (1) Weigh 0.2 g of sample into a 500 ml Erlenmeyer flask.
(2) Add 50 ml of ion exchange water to (1) and stir with a stirrer.
(3) Drip methanol from the burette while stirring, and read the dripping amount when the entire sample is suspended in ion-exchanged water.
(4) The degree of hydrophobicity is obtained from the following equation.
Hydrophobicity = (Methanol titration ml)
× 100 / (methanol titration ml + ion exchange water volume ml)

  The average particle diameter of the hydrophobic inorganic oxide fine particles such as hydrophobic silica is sufficiently large to coat the non-halogen flame retardant particles containing phosphorus and nitrogen, and is preferably in the range of 0.001 to 5 μm. Further, the range of 0.001 to 2 μm is more preferable, and the shape thereof may be a true spherical shape or an indefinite shape, and is not particularly limited.

  Moreover, as a method for coating the non-halogen flame retardant particles with the hydrophobic inorganic oxide fine particles, 0.1 to 20 parts by mass, preferably 1 to 10 parts by mass of hydrophobicity per 100 parts by mass of the non-halogen flame retardant particles. Hydrophobic inorganic fine particles on the surface of non-halogen flame retardant particles by high-speed stirring means (about 100 to 5,000 rpm) using a mixer such as a ball mill, V-type mixer, ribbon-type mixer, screw mixer, etc. The oxide fine particles are coated.

  The non-halogen flame retardant coated with the hydrophobic inorganic oxide fine particles preferably has an average particle size of 3 to 35 μm, particularly 5 to 20 μm. In the present invention, one or more of the hydrophobic inorganic oxide fine particle-coated non-halogen flame retardants can be used.

  The mixing ratio of the synthetic resin emulsion and the halogen-free flame retardant having the surface of the halogen-free flame retardant particles containing phosphorus and nitrogen coated with hydrophobic inorganic oxide fine particles is 1 to 100 parts by mass with respect to 100 parts by mass of the solid content of the constituent resin emulsion. 300 parts by mass, more preferably 5 to 200 parts by mass. If the flame retardant is less than 1 part by mass, the flame retardant effect is not sufficient, and if it exceeds 300 parts by mass, the practical strength of the coating film cannot be obtained and the cost increases.

  In the coating composition of the present invention, in addition to the above constituent materials, if necessary, cellulose-based water-soluble polymers such as hydroxymethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, methylcellulose, fully saponified polyvinyl alcohol, partially saponified polyvinyl alcohol, Synthetic water-soluble polymers such as polyacrylic acid and salts thereof, polymethacrylic acid and salts thereof, polyacrylamide and alkali thickened acrylic emulsion, bases such as ammonia, triethylamine, sodium hydroxide, polyethylene wax, antifoaming agent, Leveling agents, tackifiers, antiseptics, antibacterial agents, rust inhibitors, and the like can be blended within a range that does not impair the object of the present invention.

  The coating composition of this invention can be prepared by mixing uniformly the predetermined amount of the said component according to a conventional method. The obtained coating composition preferably has a solid content of 30 to 70% by mass, particularly 40 to 60% by mass.

  The coating composition thus obtained can be suitably used as a coating agent for various substrates that require a flame retardant effect, and is particularly suitable as a coating agent for vehicle interior materials such as car seats, car mats, and ceiling materials. Yes.

  When apply | coating the coating composition of this invention to a base material, it can apply | coat using a well-known coating machine, for example, a gravure roll coater, a knife coater, a reverse roll coater etc. Here, as the substrate, polyester, nylon woven fabric or knitted fabric, polyester, polypropylene nonwoven fabric, and the like can be used.

  Moreover, when apply | coating, you may use a coating composition as it is, and you may use it as it thickens suitably with commercially available thickeners, such as an alkali thickening type acrylic emulsion. In this case, the viscosity at 25 ° C. measured with a B-type viscometer is preferably 10,000 to 50,000 mPa · s, particularly 20,000 to 40,000 mPa · s.

The coating amount of the coating composition is usually 30 to 600 g / m ² , preferably 50 to 500 g / m ² in a dry state. As drying conditions after application, drying at a temperature of 100 to 180 ° C. for 1 to 10 minutes is preferable.

Here, as physical properties required for vehicle interior materials such as car seats, car mats, and ceiling materials, not only flame retardancy but also texture is required. This texture is measured by the 45-degree cantilever method of JIS L1079 (expressed by bending resistance), but the required performance varies depending on the type of vehicle interior material. That is, in the case of a car seat or the like, a soft material is required, and the bending resistance is preferably 100 or less. On the other hand, car mats and ceiling materials are required to be hard, and the bending resistance is preferably more than 100. Generally, the coating amount of the coating agent, in the case of such car seat is preferably in the range of 30 to 200 g / m ² in a dry state, car mats and scope of 300 to 600 g / m ² in a dry state in the case of a ceiling material or the like Is preferred.

  Hereinafter, although a preparation example, an Example, and a comparative example are shown and this invention is demonstrated concretely, this invention is not restrict | limited to the following Example. In addition, in the following example, a part and% show a mass part and mass%, respectively.

[Preparation Example 1]
A 3 L glass container equipped with a stirrer, a reflux condenser and a thermometer was prepared, and the air was sufficiently replaced with nitrogen. In a glass container, 1,000 parts of ion-exchanged water, 20 parts of Emar O (manufactured by Kao Corporation: sodium lauryl sulfate), and DKSNL-600 (manufactured by Daiichi Kogyo Seiyaku Co., Ltd .: polyoxyethylene lauryl ether) 30 Part was added and stirring was started.
Raise the internal temperature of the glass container to 80 ° C., and mix 580 parts of butyl acrylate, 300 parts of ethyl acrylate, 100 parts of acrylonitrile and 20 parts of acrylic acid, 4 parts of ammonium persulfate, and 50 parts of water. Each was added continuously for 4 hr. Then, it was made to react at 80 degreeC for 1 hour, and it cooled to 30 degreeC, and obtained acrylic acid ester resin type | system | group emulsion whose solid content is 49.5%.

[Preparation Examples 2 to 4]
Emulsion polymerization was performed in the same manner as in Preparation Example 1 to obtain various emulsions.

  Table 1 shows the compositions of Preparation Examples 1 to 4 and the composition of the commercially available synthetic resin emulsion.

[Preparation Example 5]
100 parts of ammonium polyphosphate (manufactured by Clariant: Pecoflame TC204P, average particle diameter 8 μm) and dry process silica having a specific surface area of 120 m ² / g were brought into contact with dimethyldichlorosilane diluted with nitrogen and water vapor at 500 ° C. 10 parts of hydrophobic silica (hydrophobic degree 45, average particle size 1.6 μm) hydrophobized in the range of 6.0 to 7.0 × 10 ⁻⁵ g / m ^{3 in} terms of carbon per surface area is a ribbon type mixer. The mixture was stirred and mixed at a high speed (1,000 rpm) for 1 minute. By the treatment operation, a treated ammonium polyphosphate coated with silica was obtained. When this treated ammonium polyphosphate was observed by SEM, it was confirmed that silica was adhered and coated on the surface of the ammonium polyphosphate particles.

[Preparation Example 6]
100 parts of ammonium polyphosphate surface-treated with an amino group-containing silicone oligomer (manufactured by Shin-Etsu Chemical Co., Ltd .: FRX-304, average particle size 8 μm) and a dry silica having a specific surface area of 120 m ² / g were diluted with nitrogen and water vapor. Hydrophobic treated hydrophobic silica in the range of 6.0 to 7.0 × 10 ⁻⁵ g / m ^{3 in} terms of carbon per unit surface area (hydrophobic degree 45, average) 10 parts of particles (1.6 μm) were put in a ribbon mixer and stirred and mixed at a high speed (1,000 rpm) for 1 minute. By the treatment operation, an organosilicon resin surface-treated ammonium polyphosphate coated with silica was obtained. When these particles were observed by SEM, it was confirmed that silica was adhered and coated on the surface of the organosilicon resin surface-treated ammonium polyphosphate particles.

[Preparation Example 7]
To 100 parts of ammonium polyphosphate (manufactured by BUDENHEIM: FR CROS S 10, average particle size 8 μm), 5 parts of linear silicone oil (manufactured by Shin-Etsu Chemical Co., Ltd .: KF-96H) and 100 parts of toluene are added, and these After stirring for 30 minutes, toluene was removed under reduced pressure and pulverized with a pulverizer to obtain a silicone-treated ammonium polyphosphate having an average particle size of 10 μm.

[Examples 1-7, Comparative Examples 1-8]
100 parts of Preparation Examples 1 to 4 or a commercially available emulsion was added to a stainless steel container, and stirring was started. Then, while continuing stirring, a dispersion (60% solid content) in which Preparation Examples 5 to 7 or a commercially available ammonium polyphosphate was dispersed in water using Latem ASK (manufactured by Kao Corporation: surfactant) was defined. The amount was added and stirred for 1 hour. Thereafter, ion exchange water is added to prepare a solid content of 50 ± 1%, and then thickener Boncoat V (Dainippon Ink Chemical Co., Ltd .: alkali thickened acrylic emulsion) and 25% aqueous ammonia. Was added to increase the viscosity to 30,000 ± 3,000 mPa · s (B-type viscometer, 25 ° C.) to obtain a coating agent.
Tables 2 and 3 show the composition of the coating agent.

A specified amount of the coating agent was applied to a 400 g / m ² polyester woven fabric and 700 g / m ² polypropylene non-woven fabric, respectively, and dried at 130 ° C. for 5 minutes to obtain a specimen.
The specimens obtained in the examples and comparative examples were measured for stitch fatigue, flame retardancy, water resistance, bending resistance, and the presence or absence of formaldehyde generation. Here, specimens obtained from 400 g / m ² polyester fabric were used for car seats, and seam fatigue, flame retardancy, water resistance, bending resistance, presence or absence of formaldehyde generation, and heat resistance were measured. The results are shown in Table 4. On the other hand, a specimen obtained from a 700 g / m ² non-woven fabric made of polypropylene was used for a car mat, and flame retardancy, water resistance, bending resistance, presence / absence of formaldehyde generation, and heat resistance were measured. The results are shown in Table 5.

The measurement method and criteria are as follows.
1. Fatigue fatigue Test specimens with a width of 10 cm and a length of 10 cm are taken vertically and in pairs, and two sets of slab urethane foam (density: 0.02 g / cm ³ , on the back side of the test piece) (Thickness: 5 mm) and backing fabric (nylon spunbond nonwoven fabric: 40 g / m ² ) with the slab urethane foam in the middle and stacked the two composites together with the front side 1 cm from the edge of one side The position is perforated and two sets of vertical and horizontal specimens are made. The test is attached to a seam fatigue tester (manufactured by Yamaguchi Chemical Industry Co., Ltd.), repeated 2,500 times with a load of 3 kg and then measured with a magnifying loupe under a load of 3 kg. To do.
Here, the stitch fatigue refers to the distance between the in-cloth thread closest to the sewing thread that has moved in the load direction due to repeated fatigue and the sewing thread, and is measured in units of 0.1 mm. The average value of the two measurements is the stitch fatigue of the sample.
* Criteria ○: Distance moved is 2.2 mm or less ×: Distance moved exceeds 2.2 mm

2. Flame retardance According to the test method of the American automobile safety standard FMVS S-302.
* Criteria (1) For car seats ○: Combustion distance is 38 mm or less ×: Combustion distance exceeds 38 mm (2) For car mats ○: Combustion distance is 38 mm or less, combustion time is within 60 seconds,
Or the burning speed is 10 cm / min or less x: the burning distance exceeds 38 mm and the burning time exceeds 60 seconds,
Moreover, the burning rate exceeds 10 cm / min.

3. Water resistance A 5 mm diameter water drop is dropped on the surface where the coating agent is applied, and it is examined whether there is a slime feeling on the surface where the coating agent is applied.
* Criteria ◎: No slimy feeling, water droplets do not penetrate into the coated surface ○: No slimy feeling △: There is a little slimy feeling ×: Strong slimy feeling

4). Softness
According to the 45 degree cantilever method of JIS L1079 (5.17A method). The greater the bending resistance, the harder the specimen.
* Judgment criteria (1) For car seats ○: Flexibility is 100 or less
×: The bending resistance exceeds 100 (2) In the case of a car mat ○: The bending resistance exceeds 100 ×: The bending resistance is 100 or less

5. Measurement of formaldehyde A 50 cm ² specimen is placed in a ² L Tedlar bag (trade name of Jupon Co.), the inside of the Tedlar bag is purged with nitrogen, and then sealed. After this Tedlar bag is left in an atmosphere of 65 ° C. for 2 hours, the presence or absence of formaldehyde generation is measured with a gas detector tube (manufactured by Gastec Corporation: 91 L).
* Criteria ○: No formaldehyde generated ×: Formaldehyde generated

6). Heat resistance The polyester woven fabric and the polypropylene nonwoven fabric coated with various coating agents were heat-treated at a temperature of 150 ° C. for 1 hour, and then the degree of discoloration of the coating surface was visually evaluated.
Rank A: No discoloration Rank B: Yellowish change C Rank: Significant yellowish change

備考） Ｓｔ ：スチレン
ＭＭＡ：メタアクリル酸メチルエステル
ＢＡ ：アクリル酸ブチルエステル
ＥＡ ：アクリル酸エチルエステル
ＡＮ ：アクリロニトリル
ＡＡ ：アクリル酸
ＧＭＡ：メタアクリル酸グリシジルエステル

Remarks) St: Styrene
MMA: Methacrylic acid methyl ester
BA: Acrylic acid butyl ester
EA: acrylic acid ethyl ester
AN: Acrylonitrile
AA: Acrylic acid
GMA: glycidyl methacrylate

備考） テラージュＣ−３０：チッソ（株）製、メラミン被覆ポリリン酸アンモニウム
テラージュＣ−６０：チッソ（株）製、メラミン・ホルムアルデヒド被覆ポリ
リン酸アンモニウム

Remarks) Terrage C-30: manufactured by Chisso Corporation, melamine-coated ammonium polyphosphate
Terrage C-60: manufactured by Chisso Corporation, melamine / formaldehyde coated poly
Ammonium phosphate

Claims (9)

  1 to 300 masses of one or more of non-halogen flame retardants in which the surface of non-halogen flame retardant particles containing phosphorus and nitrogen is coated with hydrophobic inorganic oxide fine particles with respect to 100 parts by mass of the solid content of the synthetic resin emulsion. A coating composition obtained by adding a part thereof.   The synthetic resin emulsion is one or more selected from (meth) acrylic ester resin emulsion, styrene / acrylate copolymer emulsion, urethane resin emulsion, ethylene / vinyl acetate copolymer emulsion and rubber emulsion. The coating composition according to claim 1.   Non-halogen flame retardant particles containing phosphorus and nitrogen are one or two selected from guanidine phosphate, ammonium phosphate, melamine phosphate, ammonium polyphosphate, melamine surface-treated ammonium polyphosphate, and silicon compound surface-treated ammonium polyphosphate The coating composition according to claim 1 or 2, which is as described above.   The coating composition according to claim 3, wherein the halogen-free flame retardant particles containing phosphorus and nitrogen are ammonium polyphosphate.   The coating composition according to claim 3, wherein the non-halogen flame retardant particles containing phosphorus and nitrogen are ammonium polyphosphate whose surface is treated with a silicon compound. Hydrophobic inorganic oxide fine particles, any one coating composition as claimed in claim 1, wherein the hydrophobic silica fine particles to 5. The coating composition of any one of claims 1 average particle size of the non-halogen-based flame retardant coated with a hydrophobic inorganic oxide fine particles are 3~35μm to 6. The coating composition of any one of claims 1 average particle size of the hydrophobic inorganic oxide fine particles are 0.001~5μm to 7. Vehicle interior material coated with a composition according to any one of claims 1 to 8.