Resin composition for fiber processing, and napped fabric

Abstract

To provide a resin composition for fiber processing from which a napped fabric excellent in molding retention can be obtained.SOLUTION: A resin composition for fiber processing contains a hot-melt agent (A) having a melting point of 90-130°C, a resin (B) other than the hot-melt agent (A) and an aqueous medium (C). A napped fabric has a glossy part formed from the resin composition for fiber processing. The hot-melt agent (A) is preferably a polyamide resin and / or a polyester resin. The resin (B) is preferably an acrylic resin emulsion and / or an urethane resin dispersion.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a resin composition for fiber processing and a raised fabric. [Background technology]

[0002] Printing and embossing are known as methods for imparting design to fiber fabrics. In addition, methods for imparting gloss to the surface of fiber fabrics include a method of adhering a hot melt resin onto a printed pattern and then heat treating the pattern (see, for example, Patent Document 1) and a method of applying a resin to a napped fabric and then hot pressing to form recesses (see, for example, Patent Document 2). However, when it comes to the demand for highly glossy pattern expression, there are problems such as insufficient gloss and poor retention of the recesses after hot pressing, i.e., the gloss of recesses once formed decreases due to the restoring action of the napped fabric. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 56-101987 [Patent Document 2] JP 2005-105459 A Summary of the Invention [Problem to be solved by the invention]

[0004] The problem to be solved by the present invention is to provide a resin composition for fiber processing, which can give a fiber fabric having excellent shape retention. [Means for solving the problem]

[0005] The present invention provides a resin composition for fiber processing, comprising: a hot-melt agent (A) having a melting point of 90 to 130°C; a resin (B) other than the hot-melt agent (A); and an aqueous medium (C).

[0006] The present invention also provides a napped fabric having glossy portions formed from the resin composition for fiber processing. Effect of the Invention

[0007] According to the resin composition for fiber processing of the present invention, a fiber fabric having excellent shape retention can be obtained. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The resin composition for fiber processing of the present invention contains, as essential components, a hot-melt agent (A) having a melting point of 90 to 130° C., a resin (B) other than the hot-melt agent (A), and an aqueous medium (C).

[0009] It is essential to use a hot melt agent having a melting point in the range of 90 to 130°C as the hot melt agent (A). This allows the leveling effect of the melting hot melt agent during hot pressing to increase the smoothness of the depressions caused by pressing, and a processed fabric with excellent gloss (glossiness) can be obtained. In addition, the hot melt agent dissolved inside the raised fabric penetrates without gaps and acts as an adhesive to suppress the recovery of the raised fabric, and the depressions formed by hot pressing have excellent shape retention even in a high-temperature environment, making it possible to maintain excellent gloss for a long time. The melting point of the hot melt agent is preferably in the range of 100 to 125°C. The melting point of the hot melt agent (A) indicates a value obtained by measurement using differential scanning calorimetry (DSC). Specifically, a DSC6220 (trade name) manufactured by SII Nano Technology Co., Ltd. is used to weigh 10 mg of a sample into an aluminum container, and measurement is performed at a heating rate of 5°C / min, and the temperature at the top of the melting peak is called the melting point.

[0010] The hot melt agent (A) may be in the form of a powder, and may be, for example, a polyamide resin, a polyester resin, a polyurethane resin, or a polyolefin resin-based hot melt agent. These hot melt agents may be used alone or in combination of two or more. Among these, the hot melt agent (A) is preferably a polyamide resin and / or a polyester resin, since it provides better chemical resistance, and when the piled fabric of the present invention is used for vehicles, it is more preferably a polyester resin, since it provides better heat resistance and yellowing resistance.

[0011] The polyamide resin refers, for example, to a thermoplastic adhesive containing a polymer having an amide bond in the main chain in the molecule, and polyamides are synthesized by polycondensation polymerization and co-condensation polymerization. Generally, polyamides containing an aliphatic skeleton are collectively called nylons, and polyamides consisting only of an aromatic skeleton are collectively called polyaramids, and both are considered to be polyamides in the present invention.

[0012] The polyester resin may be, for example, a polycondensate of a polycarboxylic acid and a polyalcohol; or a ring-opening polymer produced by opening a cyclic ester. As the polycarboxylic acid used in the polycondensate, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, etc. may be used. As the polyalcohol, ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,4-cyclohexanediol, etc. may be used. In addition, as the monomer used in the ring-opening polymer, for example, acetolactone, propiolactone, butyrolactone, valeractone, etc. may be used.

[0013] The amount of the hot melt agent (A) used is preferably in the range of 5 to 40% by mass, more preferably 10 to 20% by mass, in the resin composition for fiber processing, in order to obtain even better moldability.

[0014] The resin (B) is other than the hot melt agent (A). The resin (B) functions as a binder for fibers, and it is preferable to use an aqueous dispersion to be mixed with the aqueous medium (C). As the resin (B), for example, an acrylic resin aqueous dispersion, a urethane resin aqueous dispersion, a butadiene polymer aqueous dispersion, an ethylene-vinyl acetate copolymer aqueous dispersion, a natural rubber latex, etc. can be used. These resins may be used alone or in combination of two or more. Among these, an acrylic resin aqueous dispersion and / or a urethane resin aqueous dispersion are preferred from the viewpoint of obtaining a better texture and durability of the raised fabric, and when the raised fabric of the present invention is used for vehicles, an acrylic resin aqueous dispersion is more preferred from the viewpoint of obtaining a better yellowing resistance.

[0015] The acrylic resin water dispersion is, for example, a polymerizable monomer having an acrylic monomer as an essential component, polymerized. In order to improve dissolution or dispersion in the aqueous medium (C) described below, it is preferable to use a polymerizable monomer having a carboxyl group.

[0016] Examples of the acrylic monomer used as a raw material for the acrylic resin aqueous dispersion include methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, sec-butyl (meth)acrylate, t-butyl (meth)acrylate, isobutyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, decyl (meth)acrylate, undecyl (meth)acrylate, dodecyl (meth)acrylate (laurate), and the like. alkyl (meth)acrylates such as ethyl (meth)acrylate, tridecyl (meth)acrylate, pentadecyl (meth)acrylate, hexadecyl (meth)acrylate, heptadecyl (meth)acrylate, octadecyl (meth)acrylate (stearyl (meth)acrylate), nonadecyl (meth)acrylate, and icosanyl (meth)acrylate; aromatic (meth)acrylates such as benzyl (meth)acrylate and phenylethyl (meth)acrylate; cyclohexyl (meth)acrylate, isoboronic acid, (Meth)acrylates having an alicyclic structure such as aryl (meth)acrylate; alkyl group-terminated polyalkylene glycol mono(meth)acrylates such as methoxy polyethylene glycol mono(meth)acrylate, methoxy polypropylene glycol mono(meth)acrylate, octoxy polyethylene glycol mono(meth)acrylate, octoxy polypropylene glycol mono(meth)acrylate, lauroxy polyethylene glycol mono(meth)acrylate, lauroxy polypropylene glycol mono(meth)acrylate, stearoxy polyethylene glycol mono(meth)acrylate, stearoxy polypropylene glycol mono(meth)acrylate, allyloxy polyethylene glycol mono(meth)acrylate, allyloxy polypropylene glycol mono(meth)acrylate, nonylphenoxy polyethylene glycol mono(meth)acrylate, and nonylphenoxy polypropylene glycol mono(meth)acrylate; silane-based (meth)acrylates such as trimethylsiloxyethyl (meth)acrylate;(Meth)acryloyloxyalkylsilane compounds such as 3-(meth)acryloyloxypropyltrimethoxysilane, 3-(meth)acryloyloxypropylmethyldimethoxysilane, 3-(meth)acryloyloxypropyltriethoxysilane, and 3-(meth)acryloyloxypropylmethyldiethoxysilane; fluorine-based (meth)acrylates such as perfluoroalkylethyl (meth)acrylate; glycidyl (meth)acrylate, epoxy (meth)acrylate, ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, tetramethylene glycol Examples of (meth)acrylate compounds include ricol tetra(meth)acrylate, 2-hydroxy-1,3-diacryloxypropane, 2,2-bis[4-(acryloxymethoxy)phenyl]propane, 2,2-bis[4-(acryloxyethoxy)phenyl]propane, dicyclopentenyl(meth)acrylate, tricyclodecanyl(meth)acrylate, tris(acryloxyethyl)isocyanurate, and urethane(meth)acrylate; and (meth)acrylates having an alkylamino group such as dimethylaminoethyl(meth)acrylate, diethylaminoethyl(meth)acrylate, and dimethylaminopropyl(meth)acrylate. These (meth)acrylate compounds (c) may be used alone or in combination of two or more. ;

[0017] In the present invention, "(meth)acrylate" refers to either or both of methacrylate and acrylate, "(meth)acryloyl" refers to either or both of methacryloyl and acryloyl, and "(meth)acrylic acid" refers to either or both of methacrylic acid and acrylic acid.

[0018] In addition, when a carboxyl group is introduced into the acrylic resin aqueous dispersion, for example, a polymerizable monomer having a carboxyl group, such as (meth)acrylic acid, itaconic acid, crotonic acid, fumaric acid, maleic acid, maleic anhydride, citraconic acid, etc., can be used as a raw material. These polymerizable monomers may be used alone or in combination of two or more. After a carboxyl group is introduced into the acrylic resin aqueous dispersion using these polymerizable monomers having a carboxyl group, a part or all of the carboxyl group may be neutralized with a base such as a metal hydroxide, such as potassium hydroxide, sodium hydroxide, etc., or an organic substance, such as ammonia, triethylamine, etc.

[0019] The acrylic resin water dispersion can be produced, for example, by a known emulsion polymerization method.

[0020] The urethane resin water dispersion is one in which the urethane resin can be dispersed in the aqueous medium (C) described below, and examples of the water dispersion that can be used include an aqueous urethane resin having a hydrophilic group such as an anionic group, a cationic group, a nonionic group, etc.; an aqueous urethane resin forcibly dispersed in the aqueous medium (B) using an emulsifier, etc. These water dispersions of urethane resin may be used alone or in combination of two or more kinds.

[0021] The aqueous urethane resin having an anionic group can be obtained, for example, by using, as a raw material, one or more compounds selected from the group consisting of compounds having a carboxyl group and compounds having a sulfonyl group.

[0022] Examples of the compound having a carboxyl group that can be used include 2,2-dimethylolpropionic acid, 2,2-dimethylolbutanoic acid, 2,2-dimethylolbutyric acid, 2,2-dimethylolpropionic acid, 2,2-valeric acid, etc. These compounds may be used alone or in combination of two or more.

[0023] Examples of the compound having a sulfonyl group that can be used include 3,4-diaminobutanesulfonic acid, 3,6-diamino-2-toluenesulfonic acid, 2,6-diaminobenzenesulfonic acid, N-(2-aminoethyl)-2-aminoethylsulfonic acid, etc. These compounds may be used alone or in combination of two or more.

[0024] The carboxyl group and sulfonyl group may be partially or completely neutralized with a basic compound in the aqueous urethane resin composition. Examples of the basic compound include organic amines such as ammonia, triethylamine, pyridine, and morpholine; alkanolamines such as monoethanolamine and dimethylethanolamine; and metal base compounds including sodium, potassium, lithium, and calcium.

[0025] The aqueous urethane resin having a cationic group can be obtained, for example, by using one or more compounds having an amino group as raw materials.

[0026] Examples of the compound having an amino group include compounds having primary and secondary amino groups such as triethylenetetramine and diethylenetriamine, compounds having a tertiary amino group such as N-alkyldialkanolamines such as N-methyldiethanolamine and N-ethyldiethanolamine, and N-alkyldiaminoalkylamines such as N-methyldiaminoethylamine and N-ethyldiaminoethylamine, etc. These compounds may be used alone or in combination of two or more.

[0027] The method for obtaining the aqueous urethane resin having a nonionic group may, for example, be a method using one or more compounds having an oxyethylene structure as a raw material.

[0028] Examples of the compound having an oxyethylene structure that can be used include polyether polyols having an oxyethylene structure, such as polyoxyethylene glycol, polyoxyethylene polyoxypropylene glycol, polyoxyethylene polyoxytetramethylene glycol, etc. These compounds may be used alone or in combination of two or more.

[0029] Examples of emulsifiers that can be used when obtaining the aqueous urethane resin that is forcibly dispersed in the aqueous medium (C) include nonionic emulsifiers such as polyoxyethylene nonylphenyl ether, polyoxyethylene lauryl ether, polyoxyethylene styrylphenyl ether, polyoxyethylene sorbitol tetraoleate, and polyoxyethylene-polyoxypropylene copolymers; anionic emulsifiers such as fatty acid salts such as sodium oleate, alkyl sulfate ester salts, alkylbenzene sulfonates, alkyl sulfosuccinates, naphthalene sulfonates, polyoxyethylene alkyl sulfate salts, sodium alkanesulfonates, and sodium alkyldiphenyl ether sulfonates; and cationic emulsifiers such as alkylamine salts, alkyltrimethylammonium salts, and alkyldimethylbenzylammonium salts. These emulsifiers may be used alone or in combination of two or more.

[0030] Specifically, the urethane resin aqueous dispersion may be one obtained from raw materials used for producing the aqueous urethane resin having a polyisocyanate, a polyol, and the hydrophilic group described above. The reaction may be a known urethane-forming reaction.

[0031] Examples of the polyisocyanate include aromatic polyisocyanates such as phenylene diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, xylylene diisocyanate, naphthalene diisocyanate, polymethylene polyphenyl polyisocyanate, and carbodiimidized diphenylmethane polyisocyanate; and aliphatic or alicyclic polyisocyanates such as hexamethylene diisocyanate, lysine diisocyanate, cyclohexane diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, xylylene diisocyanate, tetramethylxylylene diisocyanate, dimer acid diisocyanate, and norbornene diisocyanate. These polyisocyanates may be used alone or in combination of two or more.

[0032] Examples of the polyol that can be used include polyether polyol, polyester polyol, polyacrylic polyol, polycarbonate polyol, polybutadiene polyol, etc. These polyols may be used alone or in combination of two or more kinds.

[0033] The amount of the resin (B) used is preferably in the range of 10 to 50 mass % in the resin composition for fiber processing, and more preferably in the range of 1 to 5 times the amount of the hot melt agent (A), in order to obtain even better mold retention.

[0034] Examples of the aqueous medium (C) include water, organic solvents miscible with water, and mixtures thereof. Examples of the organic solvent miscible with water include alcohols such as methanol, ethanol, n-propanol, and isopropanol; ketones such as acetone and methyl ethyl ketone; polyalkylene glycols such as ethylene glycol, diethylene glycol, and propylene glycol; alkyl ethers of polyalkylene glycols; and lactams such as N-methyl-2-pyrrolidone. These aqueous media (C) may be used alone or in combination of two or more. Among these, it is preferable to use water from the viewpoint of reducing the environmental load.

[0035] The resin composition for fiber processing of the present invention contains the hot melt agent (A), the resin (B), and the aqueous medium (C) as essential components, but may contain other additives as required.

[0036] Examples of the other additives that can be used include thickeners, crosslinking agents, antioxidants, ultraviolet absorbers, dispersants, water repellents, leveling agents, antifoaming agents, etc. These additives may be used alone or in combination of two or more.

[0037] As described above, the resin composition for fiber processing of the present invention can give a fiber fabric having excellent shape retention, and can be particularly suitably used as the glossy portion of a piled fabric.

[0038] The raised fabric may be any fabric that is raised, and may be, for example, a woven fabric, a knitted fabric, a nonwoven fabric, etc. The raised fabric may have a nap length in the range of, for example, 0.1 to 15 mm.

[0039] Examples of materials that can be used for the pile fabric include polyester fibers, polypropylene fibers, nylon fibers, acrylic fibers, and composite fibers thereof.

[0040] The method for forming the glossy portion on the napped fabric may be, for example, a method of applying the fiber processing resin composition of the present invention to the napped fabric in a predetermined pattern and suppressing the nap. The method for applying the fiber processing resin composition may be, for example, rotary screen printing, flat screen printing, roller printing, etc. It is preferable to apply the fiber processing resin composition to the surface of the napped fabric in a pattern by these methods and solidify it. A synthetic resin film may be laminated on the napped fabric.

[0041] It is preferable to subsequently pressurize and heat the mixture, for example, at a heating temperature of 100 to 190°C and a pressure of 1 to 100 kgf / cm 2The pressure and the pressure time may be 10 to 180 seconds. As a device for applying pressure and heat, for example, a heat roll, a Hoffman press machine, a transfer printing machine, or the like may be used. EXAMPLES

[0042] The present invention will now be described in more detail with reference to examples.

[0043] [Example 1] (1) Preparation of resin composition for fiber processing 18.1 parts by mass of water, 64.5 parts by mass of an aqueous acrylic resin emulsion (DIC Corporation's "DEXCEL HPS CLEAR CONC L-503", hereinafter abbreviated as "AcEm"), 11.2 parts by mass of a hot melt agent (Alkemal's "Platamide M1757", melting point: 112 ° C., hereinafter abbreviated as "HM (1)"), 0.2 parts by mass of an antifoaming agent (San Nopco's "Nopco 8034"), 2 parts by mass of propylene glycol, 0.5 parts by mass of a nonionic surfactant (Dai-ichi Kogyo Seiyaku Co., Ltd.'s "Noigen EA-157"), 5 parts by mass of a thickener (DIC Corporation's "Boncoat VE"), and 0.5 parts by mass of 25% by mass ammonia water were uniformly mixed using a dispersion stirrer (TK Homo Disper, Tokushu Kika Kogyo Co., Ltd.) to obtain a fiber processing resin composition for evaluation.

[0044] (2) Preparation of printed fabric for evaluation Printing was carried out on a polyester fabric with a raised surface using an auto screen printing machine (manufactured by Tsujii Nassen Co., Ltd.), and the fabric was dried in a hot air circulation dryer at 120° C. for 5 minutes to obtain a printed fabric for evaluation.

[0045] [Method for evaluating mold retention] (1) Heat pressing of the printed fabric for evaluation Using a thermal transfer press (Okuno Electric Co., Ltd.), the coating was heated at 180°C for 50 lines, and the gloss of the coating was evaluated. The gloss was evaluated using the black density (OD value) of a reflection densitometer (GretagMacbeth "RD-918"). Hereinafter, the OD value at this time will be referred to as the "initial OD value."

[0046] (2) Heat resistance test The hot-pressed coated product was heated in a hot air circulating dryer at 110°C for 400 hours, after which the gloss of the surface of the coated product was measured in the same manner. Hereafter, the OD value at this time is referred to as the "OD value after heat resistance test."

[0047] [Example 2] A resin composition for fiber processing and a printed fabric for evaluation were obtained in the same manner as in Example 1, except that the hot melt agent used in Example 1 was changed to a hot melt agent ("Platamide H-1276" manufactured by Alkemal Co., Ltd., melting point: 110°C, hereinafter abbreviated as "HM(2)"). The initial OD value and the OD value after the heat resistance test were measured.

[0048] [Example 3] A resin composition for fiber processing and a printed fabric for evaluation were obtained in the same manner as in Example 1, except that the hot melt agent used in Example 1 was changed to a hot melt agent ("Grilltex 2A" manufactured by M-Chemie, melting point: 125°C, hereinafter abbreviated as "HM(3)"). The initial OD value and the OD value after the heat resistance test were measured.

[0049] [Example 4] A resin composition for fiber processing and a printed fabric for evaluation were obtained in the same manner as in Example 1, except that the hot melt agent used in Example 1 was changed to a hot melt agent ("Grilltex D1365E" manufactured by M-Chemie, melting point: 102°C, hereinafter abbreviated as "HM(4)"), and the initial OD value and the OD value after the heat resistance test were measured.

[0050] [Example 5] A resin composition for fiber processing and a printed fabric for evaluation were obtained in the same manner as in Example 1, except that the hot melt agent used in Example 1 was changed to a hot melt agent ("Grilltex 8E" manufactured by M-Chemie, melting point: 102°C, hereinafter abbreviated as "HM(5)"). The initial OD value and the OD value after the heat resistance test were measured.

[0051] [Example 6] A resin composition for fiber processing and a printed fabric for evaluation were obtained in the same manner as in Example 1, except that the hot melt agent used in Example 1 was changed to a hot melt agent ("Grilltex 9E" manufactured by M-Chemie, melting point: 120°C, hereinafter abbreviated as "HM(6)"). The initial OD value and the OD value after the heat resistance test were measured.

[0052] [Comparative Example 1] A resin composition for fiber processing and a printed fabric for evaluation were obtained in the same manner as in Example 1, except that the hot melt agent used in Example 1 was changed to a hot melt agent ("Grilltex D1666A" manufactured by M-Chemie, melting point: 80°C, hereinafter abbreviated as "HM(R1)"). The initial OD value and the OD value after the heat resistance test were measured.

[0053] [Table 1]

[0054] It was found that the fiber processing resin composition of the present invention can give fiber fabrics with excellent mold retention. Specifically, in Examples 1 to 6, the initial OD value, i.e., the gloss value, was high, and even after the heat resistance test, the OD value did not decrease much, and the gloss was maintained.

[0055] On the other hand, in Comparative Example 1, a hot melt agent (A) having a melting point below the range specified in the present invention was used, and in all cases, the gloss significantly decreased after the heat resistance test.

Claims

1. A resin composition for fiber processing, comprising: a hot melt agent (A) having a melting point of 90 to 130°C; a resin (B) other than the hot melt agent (A); and an aqueous medium (C).

2. 2. The resin composition for fiber processing according to claim 1, wherein the hot melt agent (A) is a polyamide resin and / or a polyester resin.

3. 3. The resin composition for fiber processing according to claim 1, wherein the resin (B) is an aqueous dispersion of an acrylic resin and / or an aqueous dispersion of a urethane resin.

4. A napped fabric having glossy parts formed from the resin composition for fiber processing according to any one of claims 1 to 3.

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