JP2022062389A - Water- and oil-repellent treatment agent for fabric - Google Patents

Abstract

To provide a water- and oil-repellent treatment agent for fabric that does not contain fluorine compounds causing concern about the environmental load, and can uniformly dye even high-density cloth, and can express excellent water- and oil-repellence.SOLUTION: A water- and oil-repellent treatment agent for fabric contains a polyolefin composite acrylic resin (A) having a polyolefin resin (a1) and an acrylic polymer (a2), and an aqueous medium (B). The content of alkyl (meth)acrylate in a monomer raw material of the acrylic polymer (a2) is 40-99 mass%.SELECTED DRAWING: None

Description

The present invention relates to a water-repellent and oil-repellent treatment agent for fabrics.

Conventionally, a textile product in which a water-repellent agent is treated on a textile product or the like to impart water repellency to the surface thereof is known. However, since there is a concern about the environmental load of the fluorine compound and heat treatment at a high temperature is required at the time of use, a treatment agent containing no fluorine compound has been studied.

Under such circumstances, a cloth containing an acrylic resin containing (meth) acrylic acid ester having an alkyl group having 6 to 24 carbon atoms and (maleic anhydride) maleic anhydride as essential raw materials, a basic compound, and an aqueous medium. Water- and oil-repellent treatment agents for water and oil have been proposed (see, for example, Patent Document 1).

However, when the water-repellent treatment agent described in Patent Document 1 is used for a high-density fabric, the water repellency may not be sufficiently developed.

International Publication No. 2018/180538

The problem to be solved by the present invention is that it does not contain a fluorine compound which may be a burden on the environment, and even when used for a high-density fabric, it has excellent dyeability to the fabric and has excellent water repellency and oil repellency. It is an object of the present invention to provide a water-repellent and oil-repellent treatment agent for fabrics capable of expressing the above.

As a result of diligent research to solve the above-mentioned problems, the present inventors have found that a water-repellent and oil-repellent treatment agent for cloth containing a specific polyolefin composite acrylic resin and an aqueous medium can solve the above-mentioned problems. ..

That is, the present invention is a water- and oil-repellent treatment agent for fabrics containing a polyolefin resin (a1), a polyolefin composite acrylic resin (A) having an acrylic polymer (a2), and an aqueous medium (B). , The fabric characterized in that the alkyl (meth) acrylate in the monomer raw material of the acrylic polymer (a2) is 40 to 99% by mass and the (meth) acrylic acid is 0.5 to 5% by mass. It relates to a water-repellent and oil-repellent treatment agent.

Since the water- and oil-repellent treatment agent for fabrics of the present invention can impart excellent water and oil repellency to the base material, it is made of fibers such as cotton, silk, wool, linen, polyethylene, nylon, polyester, polyurethane, and rayon. It can be suitably used as a water-repellent treatment agent for the cloth. It is particularly suitable as a water repellent treatment agent for high-density fabrics.

The water-repellent and oil-repellent treatment agent for cloth of the present invention contains a polyolefin resin (a1), a polyolefin composite acrylic resin (A) having an acrylic polymer (a2), and an aqueous medium (B). It is an oil repellent treatment agent, and the alkyl (meth) acrylate in the monomer raw material of the acrylic polymer (a2) is 40 to 99% by mass, and the (meth) acrylic acid is 0.5 to 5% by mass. There is.

Examples of the polyolefin resin (a1) include polypropylene, high-density polyethylene, ultra-high molecular weight polyethylene, linear low-density polyethylene, low-density polyethylene, ultra-low-density polyethylene, ultra-low-density polyethylene, polymethylpentene, and ethylene-propylene. Polymer, propylene-1-butene random copolymer, propylene-ethylene-1-butene random copolymer, copolymer composed of propylene and α-olefin having 5 to 12 carbon atoms, propylene-non-conjugated diene copolymer Combined, ethylene-non-conjugated diene copolymer, ethylene-propylene-non-conjugated diene copolymer, polybutene, ethylene-vinyl acetate copolymer, ethylene-vinyltrimethoxysilane copolymer, ethylene-methyl acrylate copolymer , Ethylene-ethyl acrylate copolymer, ethylene-methyl methacrylate copolymer, styrene-butadiene block copolymer, hydrogenated products thereof and the like. The polyolefin resin (a1) may be used alone or in combination of two or more.

The melting point of the polyolefin resin (a1) is preferably 50 to 100 ° C., preferably 60 to 90 ° C., because it has excellent processability into a fabric and more effectively develops water repellency and oil repellency. Is more preferable.

The weight average molecular weight of the polyolefin resin (a1) is preferably 20,000 to 100,000, more preferably 30,000 to 60,000 because the water repellency is further improved.

The average molecular weight of the resin in the present invention is a value converted into polystyrene based on gel permeation chromatography (hereinafter abbreviated as “GPC”) measurement.

Further, the polyolefin resin (a1) is preferably polypropylene because the water repellency is further improved.

The acrylic polymer (a2) is obtained by polymerizing an alkyl (meth) acrylate, a (meth) acrylic acid, and, if necessary, other unsaturated monomers.

Examples of the alkyl (meth) acrylate include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, and t-butyl (meth) acrylate. , Cyclohexyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isobornyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate and the like. These alkyl (meth) acrylates may be used alone or in combination of two or more.

Further, as the alkyl (meth) acrylate, 50 to 95% by mass of an alkyl (meth) acrylate having 6 or more carbon atoms is preferably used because the water repellency is further improved.

As the alkyl (meth) acrylate, it is preferable to use methyl methacrylate because the affinity with the fabric is further improved.

The alkyl (meth) acrylate in the monomer raw material of the acrylic polymer (a2) is 40 to 99% by mass, preferably 60 to 90% by mass.

The amount of (meth) acrylic acid in the monomer raw material of the acrylic polymer (a2) is 0.5 to 5 parts by mass, but the permeability to the fabric is further improved. Therefore, 0.8 to 3. 5% by mass is preferable.

Examples of the other unsaturated monomer include (meth) acrylamide, glycidyl (meth) acrylate, 2-methylaminoethyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, and 2-hydroxypropyl (meth). Acrylate, 2-hydroxybutyl (meth) acrylate, 4-hydrokibutyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, γ-methacryloxypropyltrimethoxylan, benzyl (meth) acrylate, diethylene glycol di (meth) acrylate, Acrylic acid esters such as di (meth) acrylic acid-1,4-butanediol, di (meth) acrylic acid-1,6-hexanediol, tri (meth) acrylic acid trimethylolpropane, and di (meth) acrylic acid glycerin. Styrene compounds such as styrene, α-methylstyrene, paramethylstyrene, chloromethylstyrene; (anhydrous) maleic acid, fumaric acid, (anhydrous) citraconic acid, mesaconic acid, (anhydrous) itaconic acid, (anhydrous) acrylate, etc. An unsaturated carboxylic acid of the above can be mentioned. These other monomers may be used alone or in combination of two or more.

In the present invention, "(meth) acrylate" means one or both of methacrylate and acrylate, and "(meth) acrylic acid" means one or both of methacrylic acid and acrylic acid, and "(maleic anhydride)". ) Maleic acid means one or both of maleic anhydride and maleic acid, and "(meth) acryloyl group" means one or both of a methacrylic acid group and an acryloyl group.

The amount of the other unsaturated monomer used is the balance obtained by subtracting the ratio of the above-mentioned alkyl (meth) acrylate and (meth) acrylic acid from the total 100% by mass of the unsaturated monomer raw material.

The mass ratio [(a1) / (a2)] of the polyolefin resin (a1) and the acrylic polymer (a2) is 10/90 to 40/60 because the leveling property on the fabric is further improved. The range is preferable, and the range of 20/80 to 35/65 is more preferable.

As the method for producing the polyolefin composite acrylic resin (A), an underwater polymerization method or an emulsion polymerization method is preferable because the polyolefin composite acrylic resin (A) can be easily obtained.

As a method for obtaining the polyolefin composite acrylic resin (A) by the emulsion polymerization method, for example, in the presence of the polyolefin resin (a1), an emulsifier, and a polymerization initiator in an aqueous medium, the acrylic polymer (a2) can be obtained. Examples thereof include a method of radically polymerizing a monomer raw material at a temperature of 50 to 100 ° C.

Examples of the emulsifier include sulfate esters of higher alcohols and salts thereof, alkylbenzene sulfonates, polyoxyethylene alkylphenyl sulfonates, polyoxyethylene alkyl diphenyl ether sulfonates, and sulfate half ester salts of polyoxyethylene alkyl ethers. Anionic emulsifiers such as alkyldiphenyl ether disulfonates, dialkyl ester succinate sulfonates; polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene diphenyl ethers, polyoxyethylene-polyoxypropylene block copolymers, Nonionic emulsifiers such as acetylene diols; cationic emulsifiers such as alkylammonium salts; amphoteric emulsifiers such as alkyl (amide) betaine and alkyldimethylamine oxides can be mentioned. These emulsifiers may be used alone or in combination of two or more. The monomer (a1) can also be used as an emulsifier.

Examples of the polymerization initiator include azo compounds such as 2,2'-azobis (isobutyronitrile), 2,2'-azobis (2-methylbutyronitrile), and azobiscyanovaleric acid; tert-butylperoxy. Organic compounds such as pivalate, tert-butylperoxybenzoate, tert-butylperoxy-2-ethylhexanoate, di-tert-butyl peroxide, cumene hydroperoxide, benzoyl peroxide, and tert-butyl hydroperoxide. Oxides: Inorganic peroxides such as hydrogen peroxide, ammonium persulfate, potassium persulfate, sodium persulfate and the like can be mentioned. In addition, these polymer initiators can be used alone or in combination of two or more. Further, it is preferable to use these polymerization initiators in the range of 0.1 to 10% by mass with respect to the total amount of the monomers which are the raw materials of the polymer.

Since the dispersion stability of the polyolefin composite acrylic resin (A) is further improved, it is preferable to adjust the pH with a basic compound and / or an acidic compound, and examples of the basic compound include methylamine and dimethyl. Organic amines such as amines, trimethylamines, ethylamines, diethylamines, triethylamines, 2-aminoethanol, 2-dimethylaminoethanol; inorganic basic compounds such as ammonia (water), sodium hydroxide, potassium hydroxide; tetramethylammonium hydroxides, Examples thereof include tetra-n-butylammonium hydroxide and quaternary ammonium hydroxide of trimethylbenzylammonium hydroxide. These basic compounds may be used alone or in combination of two or more.

Examples of the acidic compound include carboxylic acid compounds such as formic acid, acetic acid, propionic acid and lactic acid; monoesters or diesters of phosphoric acid such as phosphoric acid monomethyl ester and phosphoric acid dimethyl ester; methanesulfonic acid, benzenesulfonic acid and dodecylbenzenesulfonic acid. Organic sulfonic acid compounds such as; inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid and the like. Of these, carboxylic acid compounds are preferred. These acidic compounds may be used alone or in combination of two or more.

Examples of the aqueous medium (B) include water, an organic solvent miscible with water, and a mixture thereof. Examples of the organic solvent to be mixed 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 glycol. Examples include lactams such as N-methyl-2-pyrrolidone. In the present invention, only water may be used, a mixture of water and an organic solvent miscible with water may be used, or only an organic solvent miscible with water may be used. From the viewpoint of safety and environmental load, water alone or a mixture of water and an organic solvent miscible with water is preferable, and water alone is particularly preferable.

As the aqueous medium (B), it is convenient and preferable to use the aqueous medium used for producing the polyolefin composite acrylic resin (A) by the underwater polymerization method and the emulsion polymerization method as it is.

The water- and oil-repellent treatment agent for fabrics of the present invention contains the polyolefin composite acrylic resin (A) and the aqueous medium (B), and the polyolefin composite acrylic resin obtained by an emulsion polymerization method or the like. It is preferable that (A) is dispersed in the aqueous medium (B).

In addition, the amount of organic solvent in the water-repellent and oil-repellent treatment agent for fabrics of the present invention can be reduced by going through a solvent removal step as necessary.

Further, the water-repellent and oil-repellent treatment agent for cloth of the present invention is, if necessary, a water-repellent agent, an oil-repellent agent, a dispersant, a curing catalyst, a lubricant, a filler, a thixo-imparting agent, a tackifier, a wax, and heat. Stabilizers, light-resistant stabilizers, fluorescent whitening agents, foaming agents and other additives, pH adjusters, leveling agents, antigelling agents, dispersion stabilizers, antioxidants, radical trapping agents, heat-resistant imparting agents, inorganic filling Agents, organic fillers, plasticizers, reinforcing agents, catalysts, antibacterial agents, antifungal agents, rust preventives, thermoplastic resins, thermosetting resins, pigments, dyes, conductivity-imparting agents, antistatic agents, moisture permeability improvement Agents, oil repellents, hollow foams, crystalline water-containing compounds, flame retardants, water absorbents, moisture absorbents, deodorants, foam stabilizers, defoamers, anticorrosives, preservatives, algae repellents, pigment dispersants, Anti-blocking agents, anti-hydrolysis agents and the like can be used in combination.

Since the water- and oil-repellent treatment agent for fabrics of the present invention can further improve water repellency and oil repellency without containing a halogen compound, dimethyl silicone oil, methyl phenyl silicone oil, methyl hydrogen silicone oil, and amino-modified silicone It is preferable to contain silicone oil such as oil, and among these, amino-modified silicone oil is more preferable, and amino-modified silicone oil having a primary diamine structure is further preferable. In addition, these silicone oils can be used alone or in combination of two or more.

The content of the silicone oil in the water-repellent oil-repellent treatment agent for fabrics is preferably 1 to 10% by mass, more preferably 2 to 8% by mass, because water repellency, oil repellency, and flexibility can be further improved.

The water- and oil-repellent treatment agent for fabrics of the present invention preferably contains a cationic dispersant because the dispersed state of each component can be made more uniform, and preferably contains an alkyltrimethylammonium and a dialkyldimethylammonium chloride. , Alkyltrimethylammonium chloride and the like are more preferable. These cation dispersants may be used alone or in combination of two or more.

The content of the cationic dispersant in the water-repellent and oil-repellent treatment agent for fabric is preferably 0.05 to 3% by mass, preferably 0.1 to 2% by mass, because the dispersed state of each component can be made more homogeneous. Is more preferable.

Examples of the cloth that can be treated by using the water-repellent and oil-repellent treatment agent for cloth of the present invention include cloth made of fibers such as cotton, silk, wool, linen, polyethylene, nylon, polyester, polyurethane and rayon.

Hereinafter, the present invention will be described in more detail with reference to specific examples. The average molecular weight was measured under the following GPC measurement conditions.

[GPC measurement conditions]
Measuring device: High-speed GPC device ("HLC-8220GPC" manufactured by Tosoh Corporation)
Column: The following columns manufactured by Tosoh Corporation were connected in series and used.
"TSKgel G5000" (7.8 mm ID x 30 cm) x 1 "TSKgel G4000" (7.8 mm ID x 30 cm) x 1 "TSKgel G3000" (7.8 mm ID x 30 cm) x 1 This "TSKgel G2000" (7.8 mm ID x 30 cm) x 1 Detector: RI (Differential Refractometer)
Column temperature: 40 ° C
Eluent: Tetrahydrofuran (THF)
Flow rate: 1.0 mL / min Injection amount: 100 μL (sample concentration 4 mg / mL tetrahydrofuran solution)
Standard sample: A calibration curve was prepared using the following monodisperse polystyrene.

(Polystyrene monodisperse)
"TSKgel Standard Polystyrene A-500" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene A-1000" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene A-2500" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene A-5000" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene F-1" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene F-2" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene F-4" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene F-10" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene F-20" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene F-40" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene F-80" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene F-128" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene F-288" manufactured by Tosoh Corporation
"TSKgel Standard Polystyrene F-550" manufactured by Tosoh Corporation

(Example 1: Production and evaluation of water-repellent and oil-repellent treatment agent (1) for fabrics)
Add 130 parts by mass of soft water to a four-necked flask equipped with a stirrer, a reflux condenser, a thermometer and a nitrogen blowing tube, and raise the temperature to 70 ° C. 32 parts by mass of polypropylene resin (“El Modus S-400” manufactured by Idemitsu Petroleum Chemical Co., Ltd.) and 110 parts by mass of methylcyclohexane were charged, and 96.7 parts by mass of cyclohexyl methacrylate, 29.8 parts by mass of methyl methacrylate, and methacrylic acid: were charged therein. 20 parts by mass, γ-methacryloxypropyltrimethosixilan 1 part by mass, lauryl mercaptan 1 part by mass, KF-96 (manufactured by Shinetsu Chemical Industry Co., Ltd.) 16 parts by mass, Neugen TSD-200D (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 6 parts by mass, Newcol 707-SF (manufactured by Nippon Emulsor Co., Ltd.) 12 parts by mass, an emulsified solution emulsified with 115 parts by mass of soft water was dropped into a flask, PZ-69 (manufactured by Nippon Oil & Fat Co., Ltd.) 0.8 parts by mass, SFS (manufactured by Sumitomo Seika Co., Ltd.): 0.3 parts by mass was added dropwise over 3 hours, and the reaction was carried out at 70 ° C. Hold for 120 minutes after neutralization. This is subjected to solvent removal (about 60 minutes) and cooling under a reduced pressure of 60 ° C. (0.080 to 0.095 MPa) to obtain an aqueous dispersion of a polyolefin composite acrylic resin (A-1) having a non-volatile content of 27.2% by mass. Obtained. 93.3 parts by mass of this aqueous dispersion is mixed with 4 parts by mass of amino-modified silicone oil (“DOWNSIL SF-8417” manufactured by Dow Toray Co., Ltd.), 0.7 parts by mass of alkyltrimethylammonium, and 2 parts by mass of methanol, and then ions. The non-volatile content was diluted to 6% by mass with exchanged water to obtain a water- and oil-repellent treatment agent (1) for cloth.

(Example 2: Production and evaluation of water- and oil-repellent treatment agent (2) for fabrics)
Add 130 parts by mass of soft water to a four-necked flask equipped with a stirrer, a reflux condenser, a thermometer and a nitrogen blowing tube, and raise the temperature to 70 ° C. 32 parts by mass of polypropylene resin ("El Modus S-400" manufactured by Idemitsu Petrochemical Co., Ltd.) and 110 parts by mass of methylcyclohexane were charged, and 96.7 parts by mass of cyclohexyl methacrylate, 29.8 parts by mass of methyl methacrylate, and methacrylic acid: 20 were charged therein. By mass, γ-methacryloxypropyltrimethosixilan 1 part by mass, lauryl mercaptan 1 part by mass, Neugen TSD-200D (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 6 parts by mass, Newcol 707-SF (manufactured by Nippon Embroidery Co., Ltd.) : Drop an emulsified solution of 12 parts by mass and 115 parts by mass of soft water into a flask, and add 0.8 parts by mass of PZ-69 (manufactured by Nippon Oil & Fats Co., Ltd.) and 0.3 parts by mass of CP (note required) over 3 hours. The mixture was added dropwise and the reaction was carried out at 70 ° C. Hold for 120 minutes after neutralization. This is subjected to solvent removal (about 60 minutes) and cooling under a reduced pressure of 60 ° C. (0.080 to 0.095 MPa) to obtain an aqueous dispersion of a polyolefin composite acrylic resin (A-1) having a non-volatile content of 27.2% by mass. Obtained. 93.3 parts by mass of this aqueous dispersion is mixed with 4 parts by mass of amino-modified silicone oil (“DOWNSIL SF-8417” manufactured by Dow Toray Co., Ltd.), 0.7 parts by mass of alkyltrimethylammonium, and 2 parts by mass of methanol, and then ions. The non-volatile content was diluted to 6% by mass with exchanged water to obtain a water- and oil-repellent treatment agent (2) for cloth.

(Comparative Example 1: Manufacture and evaluation of water- and oil-repellent treatment agent (R1) for fabrics)
400 parts by mass of soft water, 5 parts by mass of acrylic acid, 45 parts by mass of 3- (acryloylamino) propyltrimethylammonium chloride, 50 parts by mass of acrylic amide in a four-necked flask equipped with a stirrer, a reflux condenser, a thermometer and a nitrogen blowing tube. The temperature was raised to 65 ° C. 0.72 parts by mass of ammonium persulfate and 0.08 parts by mass of the preservative MBS were added, and the reaction was carried out at 65 ° C. An aqueous acrylic resin composition having a non-volatile content of 5% by mass was obtained. 93.3 parts by mass of this aqueous acrylic resin composition is mixed with 4 parts by mass of amino-modified silicone oil (“DOWNSIL SF-8417” manufactured by Dow Toray Co., Ltd.), 0.7 parts by mass of alkyltrimethylammonium, and 2 parts by mass of methanol. Then, the non-volatile content was diluted to 6% by mass with ion-exchanged water to obtain a water-repellent oil-repellent treatment agent (R1) for cloth.

[Preparation of water- and oil-repellent treated base material]
The water- and oil-repellent treatment agent for fabrics obtained above is applied to a base cloth (high-density nylon cloth or high-density polyester cloth) with a mangle coating machine at a graining amount of 1 g / m ² after drying, and 120 It was dried at ° C. for 5 minutes and further at 150 ° C. for 10 minutes to obtain a water- and oil-repellent treated substrate.

[Evaluation of leveling property]
The leveling property was evaluated according to the following criteria obtained above.
5: No uneven dyeing 4: Small uneven dyeing 3: Large uneven dyeing 2: Small oil stain 1: Large oil stain

[Evaluation of water repellency]
The water-repellent treated substrate obtained above was evaluated for water repellency according to JIS L1092 and according to the following criteria.
5: Water droplets do not divide, no trace after wiping 4: Water droplet separation, no trace after wiping 3: No bleeding during dripping With trace after wiping 2: After dripping bleeding trace 1: Complete penetration

[Evaluation of oil repellency]
The water-repellent treated base material obtained above was evaluated for oil repellency according to the following criteria in accordance with AATCC118.
5: No oil droplet spread, no bleeding after wiping 4: Oil droplet spread, no bleeding after wiping 3: No oil droplet spread, bleeding after wiping 2: Oil droplet spread, bleeding after wiping 1: Penetration (incomplete) within 1 minute after dripping oil droplets
0: Complete penetration within 1 minute after dripping oil droplets

Table 1 shows the compositions and evaluation results of Examples 1 and 2 and Comparative Example 1 above.

The abbreviations in the table are as follows.
S-400: "El Modu S-400" manufactured by Idemitsu Petrochemical Co., Ltd.
CHMA: Cyclohexylmethacrylate MMA: Methylmethacrylate MAA: Methacrylic acid AA: Acrylic acid MPTMS: γ-methacryloxypropyltrimethosixyllane DMAPPA: 3- (acryloylamino) propyltrimethylammonium chloride AM: Acrylic amide

It was confirmed that the water-repellent and oil-repellent treatment agents for fabrics of the present invention of Examples 1 and 2 were excellent in leveling property and could impart excellent water repellency and oil repellency.

On the other hand, Comparative Example 1 was an example in which the polyolefin resin (a1) was not contained, but it was confirmed that the leveling property was inferior and the water repellency was insufficient.

Claims (6)

A water- and oil-repellent treatment agent for fabrics containing a polyolefin composite acrylic resin (A) having a polyolefin resin (a1) and an acrylic polymer (a2) and an aqueous medium (B), and the acrylic polymer (a1). A water- and oil-repellent treating agent for fabrics, wherein the alkyl (meth) acrylate in the monomer raw material of a2) is 40 to 99% by mass. The water- and oil-repellent treatment agent for fabrics according to claim 1, wherein the polyolefin resin (a1) has a melting point of 50 to 90 ° C. The water- and oil-repellent treatment agent for a fabric according to claim 1 or 2, wherein the polyolefin resin (a1) has a weight average molecular weight of 20,000 to 100,000. One of claims 1 to 3, wherein the mass ratio [(a1) / (a2)] of the polyolefin resin (a1) and the acrylic polymer (a2) is in the range of 10/90 to 40/60. The water- and oil-repellent treatment agent for fabrics described. The water- and oil-repellent treatment agent for fabrics according to any one of claims 1 to 4, which contains an amino-modified silicone oil having a primary diamine structure. The water- and oil-repellent treatment agent for fabrics according to any one of claims 1 to 5, which contains a cation dispersant.