Resin composition for textile processing, and pile 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 pile fabric.

Background Art

[0002] As methods for processing fiber fabrics to impart design properties, printing, embossing, etc. are known. Further, as methods for imparting gloss to the surface of fiber fabrics, a method of adhering a hot-melt type resin onto a printed pattern and performing heat treatment (see, for example, Patent Document 1), a method of applying a resin to a pile fabric and forming recesses by heating and pressing (see, for example, Patent Document 2), etc. are known. However, with respect to the demand for a pattern expression with a high gloss feeling, there have been problems such as insufficient gloss, the molding retention of the recesses after heat pressing, that is, the problem that once formed recesses have their gloss reduced due to the restoring action of the pile fabric.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] <00,00028>The problem to be solved by the present invention is to provide a resin composition for fiber processing that can obtain a fiber fabric excellent in molding retention.

Means for Solving the Problems

[0005] The present invention provides a resin composition for fiber processing, characterized by containing 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] Furthermore, the present invention provides a piled-up fabric having a glossy portion formed from the aforementioned resin composition for fiber processing. [Effects of the Invention]

[0007] According to the resin composition for fiber processing of the present invention, it is possible to obtain a fiber fabric with excellent moldability. [Modes for carrying out the invention]

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

[0009] As the hot melt agent (A), it is essential to use a hot melt agent with a melting point in the range of 90 to 130°C. This allows for a leveling effect due to the melting of the hot melt agent during heating and pressing, resulting in smoother recesses formed by the pressing and producing a processed fabric with excellent gloss. Furthermore, the melted hot melt agent penetrates the interior of the piled fabric without gaps, acting as an adhesive to suppress the restoration of the piled fabric. This ensures excellent form retention of recesses formed by heating and pressing, even in high-temperature environments, and allows for the maintenance of excellent gloss for a long period of 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) is the value obtained by measuring using differential scanning calorimetry (DSC). Specifically, using a DSC6220 (product name) manufactured by SII Nanotechnology, 10 mg of the sample is weighed into an aluminum container and measured at a heating rate of 5°C / min. The temperature at the peak of the melting is defined as the melting point.

[0010] The hot melting agent (A) can be in powder form, and for example, polyamide resin, polyester resin, polyurethane resin, or polyolefin resin-based hot melting agents can be used. These hot melting agents may be used alone or in combination of two or more. Among these, polyamide resin and / or polyester resin are preferred as the hot melting agent (A) because they provide even better chemical resistance, and polyester resin is more preferred when the quilted fabric of the present invention is used for vehicles because it provides even better heat resistance and resistance to yellowing.

[0011] The polyamide resin refers, for example, to a thermoplastic adhesive containing a polymer having an amide bond in the main chain of the molecule. Polyamides are synthesized by polycondensation polymerization and copolymerization polymerization. Generally, polyamides containing an aliphatic skeleton are collectively called nylon, and polyamides consisting only of an aromatic skeleton are collectively called polyaramid. In this invention, both are referred to as polyamides.

[0012] Examples of the polyester resin include polycondensates of polycarboxylic acids and polyalcohols, and ring-opening polymers produced by opening the rings of cyclic esters. Examples of polycarboxylic acids used in the polycondensates include 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. Examples of polyalcohols include ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,4-cyclohexanediol, etc. Examples of monomers used in the ring-opening polymers include acetolactone, propiolactone, butyrolactone, varelulactone, etc.

[0013] The amount of the hot melt agent (A) used is preferably in the range of 5 to 40% by mass, and more preferably in the range of 10 to 20% by mass, in order to obtain even better mold retention properties.

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

[0015] The acrylic resin aqueous dispersion is, for example, obtained by polymerizing a polymerizable monomer with an acrylic monomer as an essential component. Furthermore, in order to ensure good solubility or dispersion in the aqueous medium (C) described later, it is preferable to use a polymerizable monomer having a carboxyl group.

[0016] Examples of acrylic monomers used as raw materials 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 (lau Alkyl (meth)acrylates such as lyl (meth)acrylate, tridecyl (meth)acrylate, pentadecyl (meth)acrylate, hexadecyl (meth)acrylate, heptadecyl (meth)acrylate, octadecyl (meth)acrylate (stearyl (meth)acrylate), nonadecyl (meth)acrylate, eicosanyl (meth)acrylate; aromatic (meth)acrylates such as benzyl (meth)acrylate, phenylethyl (meth)acrylate; cyclohexyl (meth)acrylate, isobolol Alkaline-terminated polyalkylene glycol mono(meth)acrylates such as nyl(meth)acrylate; methoxypolyethylene glycol mono(meth)acrylate, methoxypolypropylene glycol mono(meth)acrylate, octoxypolyethylene glycol mono(meth)acrylate, octoxypolypropylene glycol mono(meth)acrylate, lauroxypolyethylene glycol mono(meth)acrylate, lauroxypolypropylene glycol mono(meth)acrylate, stearoxypolyethylene glycol mono(meth)acrylate, stearoxypolypropylene glycol mono(meth)acrylate, alyroxypolyethylene glycol mono(meth)acrylate, alyroxypolypropylene glycol mono(meth)acrylate, nonylphenoxypolyethylene glycol mono(meth)acrylate, nonylphenoxypolypropylene glycol mono(meth)acrylate, etc.; 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 include (meth)acrylate compounds such as lycopropyl tetra(meth)acrylate, 2-hydroxy-1,3-diacroxypropane, 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 alkylamino groups 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 this invention, "(meth)acrylate" refers to either or both methacrylate and acrylate, "(meth)acryloyl" refers to either or both methacryloyl and acryloyl, and "(meth)acrylic acid" refers to either or both methacrylic acid and acrylic acid.

[0018] When introducing a carboxyl group into the acrylic resin aqueous dispersion, as raw materials, for example, polymerizable monomers 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. These polymerizable monomers may be used alone or in combination of two or more. Further, after introducing a carboxyl group 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 or sodium hydroxide; an organic substance such as ammonia or triethylamine.

[0019] As a method for producing the acrylic resin aqueous dispersion, for example, a known emulsion polymerization method can be used.

[0020] The urethane resin aqueous dispersion is such that the urethane resin can be dispersed, etc. in an aqueous medium (C) described later. For example, 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 an aqueous medium (B) with an emulsifier, etc. can be used. These urethane resin aqueous dispersions may be used alone or in combination of two or more.

[0021] As a method for obtaining the aqueous urethane resin having an anionic group, for example, a method using one or more compounds selected from the group consisting of a compound having a carboxyl group and a compound having a sulfonyl group as raw materials can be mentioned.

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

[0023] Examples of the compound having a sulfonyl group 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] In the aqueous urethane resin composition, part or all of the carboxyl group and sulfonyl group may be neutralized with a basic compound. 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 containing sodium, potassium, lithium, calcium, etc.

[0025] Examples of the method for obtaining the aqueous urethane resin having a cationic group include a method using one or more compounds having an amino group as a raw material.

[0026] Examples of the compound having an amino group include compounds having primary and secondary amino groups such as triethylenetetramine and diethylenetriamine; and 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. These compounds may be used alone or in combination of two or more.

[0027] Examples of the method for obtaining the aqueous urethane resin having a nonionic group include a method using one or more compounds having an oxyethylene structure as a raw material.

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

[0029] Examples of emulsifiers that can be used to obtain an 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 copolymer; anionic emulsifiers such as fatty acid salts such as sodium oleate, alkyl sulfate esters, alkylbenzene sulfonates, alkyl sulfosuccinates, naphthalene sulfonates, polyoxyethylene alkyl sulfates, sodium alkanesulfonates, and sodium alkyldiphenyl ethersulfonates; 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 aqueous dispersion of urethane resin can be obtained from polyisocyanate, polyol, or raw materials used to produce the aqueous urethane resin having the hydrophilic group described above. Known urethane formation reactions can be used for these reactions.

[0031] Examples of the polyisocyanates that can be used include aromatic polyisocyanates such as phenylene diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, xylylene diisocyanate, naphthalene diisocyanate, polymethylene polyphenyl polyisocyanate, and carbodiimide 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 polyols that can be used include polyether polyols, polyester polyols, polyacrylic polyols, polycarbonate polyols, and polybutadiene polyols. These polyols may be used individually or in combination of two or more.

[0033] The amount of resin (B) used is preferably in the range of 10 to 50% by mass in the resin composition for fiber processing, and more preferably in the range of 1 to 5 times the amount of 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 organic solvents 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 mediums (C) may be used alone or in combination of two or more. Among these, water is preferred from the viewpoint of reducing environmental impact.

[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 other additives may be used as needed.

[0036] Other additives that can be used include, for example, thickeners, crosslinking agents, antioxidants, UV absorbers, dispersants, water repellents, leveling agents, and defoaming agents. These additives may be used individually or in combination of two or more.

[0037] As described above, the resin composition for fiber processing of the present invention can produce fiber fabrics with excellent moldability and retention, and is particularly suitable for use as the glossy portion of piled fabrics.

[0038] The aforementioned piled fabric can be any fabric that is piled up, such as woven fabrics, knitted fabrics, or nonwoven fabrics. The pile length of the aforementioned piled fabric can be, for example, in the range of 0.1 to 15 mm.

[0039] As the material for the aforementioned standing blanket fabric, for example, polyester fibers, polypropylene fibers, nylon fibers, acrylic fibers, or composite fibers thereof can be used.

[0040] One method for forming a glossy area on the piled fabric is to apply the fiber processing resin composition of the present invention to the piled fabric in a predetermined pattern and then press down the pile. Examples of methods for applying the fiber processing resin composition include rotary screen printing, flat screen printing, and roller printing. It is preferable to apply the fiber processing resin composition to the surface of the piled fabric in a pattern and solidify it using these methods. A synthetic resin film may be laminated on top of the piled fabric.

[0041] It is preferable to continue pressurizing and heating this, for example, at a heating temperature of 100-190°C and a pressure of 1-100 kgf / cm². 2The pressure and pressurization time can range from 10 to 180 seconds. Examples of equipment that can be used for pressurizing and heating include hot rollers, Hoffman presses, and transfer printing machines. [Examples]

[0042] The present invention will be described in more detail below using examples.

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

[0044] (2) Preparation of print fabric for evaluation Printing was performed on a napped polyester fabric using an automatic screen printing machine (manufactured by Tsujii Nassen Co., Ltd.), and the fabric was dried in a hot air circulating dryer at 120°C for 5 minutes to obtain an evaluation print fabric.

[0045] [Method for evaluating moldability] (1) Heat pressing of the print fabric for evaluation Using a heat transfer press (manufactured by Okuno Electric Co., Ltd.), the coated material was heated at 180°C for 50 rows, and the gloss was evaluated. The gloss was evaluated using the black density (OD value) measured with a reflectance densitometer (Gretag Macbeth "RD-918"). Hereafter, this OD value will be referred to as the "initial OD value".

[0046] (2) Heat resistance test The coated material, which had undergone heat pressing, was heated in a hot air circulating dryer at 110°C for 400 hours, and then the gloss of the surface of the coated material was measured in the same manner. Hereafter, the OD value obtained at this time will be referred to as the "OD value after heat resistance test."

[0047] [Example 2] Except for changing the hot melt agent used in Example 1 to a hot melt agent (Platamide H-1276, manufactured by Arkemal, with a melting point of 110°C; hereinafter abbreviated as "HM(2)"), a resin composition for textile processing and an evaluation print cloth were obtained in the same manner as in Example 1, and the initial OD value and the OD value after the heat resistance test were measured.

[0048] [Example 3] Except for changing the hot melt agent used in Example 1 to a hot melt agent ("Grilletex 2A" manufactured by M-Scheme, with a melting point of 125°C, hereinafter abbreviated as "HM(3)"), a resin composition for textile processing and an evaluation print cloth were obtained in the same manner as in Example 1, and the initial OD value and the OD value after the heat resistance test were measured.

[0049] [Example 4] Except for changing the hot melt agent used in Example 1 to a hot melt agent ("Grilletex D1365E" manufactured by M-Scheme Co., Ltd., melting point: 102°C, hereinafter abbreviated as "HM(4)"), a resin composition for textile processing and an evaluation print cloth were obtained in the same manner as in Example 1, and the initial OD value and the OD value after the heat resistance test were measured.

[0050] [Example 5] Except for changing the hot melt agent used in Example 1 to a hot melt agent ("Grilletex 8E" manufactured by M-Scheme, with a melting point of 102°C, hereinafter abbreviated as "HM(5)"), a resin composition for textile processing and an evaluation print cloth were obtained in the same manner as in Example 1, and the initial OD value and the OD value after the heat resistance test were measured.

[0051] [Example 6] Except for changing the hot melt agent used in Example 1 to a hot melt agent ("Grilletex 9E" manufactured by M-Scheme, with a melting point of 120°C, hereinafter abbreviated as "HM(6)"), a resin composition for textile processing and an evaluation print cloth were obtained in the same manner as in Example 1, and the initial OD value and the OD value after the heat resistance test were measured.

[0052] [Comparative Example 1] Except for changing the hot melt agent used in Example 1 to a hot melt agent (Grilletex D1666A, manufactured by M-Scheme Co., Ltd., melting point: 80°C, hereinafter abbreviated as "HM(R1)"), a resin composition for textile processing and an evaluation print cloth were obtained in the same manner as in Example 1, and the initial OD value and the OD value after the heat resistance test were measured.

[0053] [Table 1]

[0054] The resin composition for fiber processing of the present invention has been found to produce fiber fabrics with excellent moldability. 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 decrease in the OD value was small, indicating that the gloss was maintained.

[0055] On the other hand, Comparative Example 1 uses a hot melting agent (A) whose melting point is below the range specified in the present invention, but in all cases, the gloss decreased significantly after the heat resistance test.

Claims

1. A resin composition for textile processing characterized by containing a hot melting agent (A) having a melting point of 90 to 130°C, a resin other than the hot melting agent (A) (B), and an aqueous medium (C), The amount of the hot melt agent (A) used is 5 to 20% by mass of the resin composition for fiber processing. The amount of resin (B) used is in the range of 10 to 50% by mass of the resin composition for fiber processing. A resin composition for fiber processing, used for forming glossy surfaces.

2. Furthermore, the resin composition for fiber processing according to claim 1 further comprises a nonionic surfactant.

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

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

5. A pile fabric having a glossy portion formed from the resin composition for fiber processing according to any one of claims 1 to 4.

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