JP3196339B2 - Treatment method of fiber cloth - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating fiber cloth. More specifically, the present invention relates to a treatment method for simultaneously imparting water repellency and oil repellency and stain release performance to a fiber cloth.

[0002]

2. Description of the Related Art Conventionally, polyfluoroalkyl groups are contained.
Alkyl, allyl, aryl or aralkyl esters of (meth) acrylate and (meth) acrylic acid, vinyl chloride, vinylidene chloride, alkyl vinyl ether, maleic acid ester, chloroprene, butadiene, and other copolymers as water- and oil-repellent components Used for the treatment of fiber cloth. Although the water- and oil-repellent containing such a copolymer as an active ingredient exhibits sufficiently satisfactory water and oil repellency, it is not necessarily satisfied in terms of soil release properties, and depending on the copolymer, On the contrary, there are also cases in which the soil removability is worse than that in which the water / oil repellent treatment is not performed.

On the other hand, antifouling water- and oil-repellents for the purpose of exhibiting the soil-removing performance include those containing a polyfluoroalkyl group-containing (meth) acrylate copolymer having a hydrophilic group as an active ingredient. Are known (for example,
JP-A-53-134,786, JP-A-59-204,980, JP-A-61-2
No. 66,487). These antifouling water- and oil-repellents, of course, can be sufficiently satisfied in terms of oil repellency, not to mention the soil releasability, but for the water repellency, in the test by the JIS L-1092 spray method, It only shows a value of about 50 to 80 at most.

[0004] In order to simultaneously provide water repellency and oil repellency and dirt removal performance by using a mixture of the two, even if the water repellency can be increased to about 80 to 90, the oil repellency must be improved. Was reduced, and only the result that the soil removal performance was reduced by half was obtained.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a water and oil repellent having a water repellency of 90 or more (JIS L-1092 spray test method) and a water repellency (JIS L-1092).
Spray Test Method) To provide a treatment method for simultaneously imparting water repellency and oil repellency and stain release performance to a fiber cloth using both an antifouling water repellent and an oil repellent of 80 to 50 , generally 80 to 50. is there.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is as follows.
A water repellent property (JIS L-1092 spray test method) consisting of a solution or a dispersion of a polyfluoroalkyl group-containing (meth) acrylate copolymer having a hydrophilic group and a fiber cloth having a water repellency of 80 or less. After being treated with an oil agent and dried, a water-repellent property (JIS) consisting of a solution or dispersion of a polyfluoroalkyl group-containing (meth) acrylate copolymer which alone reduces the soil release property compared to an untreated cloth
L-1092 spray test method) It is achieved by a method of treating a fiber cloth which is treated with 90 or more water and oil repellents, dried, and then heat-treated.

The main component of the copolymer, which is the active ingredient of the water and oil repellent and the antifouling water and oil repellent, is composed of, for example, the following polyfluoroalkyl group-containing (meth) acrylate. CH ₂ = CR ¹ COOR ² Rf CH ₂ = CR ¹ COO (CH ₂ ) ₂ Rf CH ₂ = CR ¹ COO (CH ₂ ) ₂ NR ³ SO ₂ Rf CH ₂ = CR ¹ COOCH (OH) CH ₂ Rf R ¹ : Hydrogen atom or methyl group R ² : divalent organic group R ³ : lower alkyl group Rf: linear or branched perfluoroalkyl group having 3 to 20 carbon atoms

In the case of the water and oil repellent, a copolymer obtained by copolymerizing about 10 to 60% of the vinyl compound or diene compound as described above is used. N-methylol (meth) acrylamide, N-butoxymethylol (meth) acrylamide, 2-
About 1 to 25% of a crosslinkable monomer such as hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, diacetone acrylamide, glycidyl (meth) acrylate, allyl glycidyl ether may be copolymerized. preferable.

In the case of an antifouling water / oil repellent,
Furthermore, a monomer having a hydrophilic group is about 10-80% in weight.
Have been combined. Examples of such a hydrophilic group-containing monomer include, for example,
For example, the following can be mentioned. CH_Two= CR¹COO (CH_TwoCH_TwoO) nR^Two  CH_Two= CR¹COO [(C_TwoH_FourO) n (C_ThreeH₆O) m] R^Two  CH_Two= CR¹COO (R^ThreeO) pRf R¹: Hydrogen atom or methyl group R^Two: Hydrogen atom or methyl group R^Three: Alkylene group Rf: perfluoroalkyl group or perfluoroalkyl
Group containing lenglycol group n, m, p: Integer of 1 or more

These copolymers, which are effective components of the water- and oil-repellent or antifouling water- and oil-repellent, are prepared by solution polymerization or emulsion polymerization in the presence of various polymerization initiators such as organic peroxides and azo compounds. The resulting solution or dispersion of the copolymer has a solid content of about 0.1 to 10
It is used after being diluted with water to about% by weight.

Synthetic fiber cloth, synthetic fiber / cotton blended cloth, etc. to be treated are first immersed in a stain- and water-repellent and oil-repellent agent. After squeezing, dry at about 80-110 ° C for about 3-10 minutes. Next, immersion treatment with a water- and oil-repellent agent is performed, and after similar squeezing and drying are performed, about 130 ° C. or more, generally about 130 to 18
The heat treatment at 0 ° C. is performed for about 30 to 180 seconds.

Contrary to such a series of steps, after treatment with a water / oil repellent first, treatment with an antifouling water / oil repellent,
Due to the effect of the previously treated water and oil repellent, the antifouling water and oil repellent hardly permeated into the cloth, so that the soil removal performance was remarkable as in the case of treatment with only the water and oil repellent. And shows only inferior results to the untreated fabric.

[0013]

According to the present invention, a textile cloth is treated with a stain-resistant water- and oil-repellent agent, and then treated with a water- and oil-repellent agent. Even when is used, water repellency and oil repellency and stain removal performance can be simultaneously provided.

[0014]

Next, the present invention will be described by way of examples.

[0015] Reference Example 1 stirrer, to a separable flask equipped with a condenser and _{thermometer, CH 2 = CHCOOCH 2 CH 2} Rf 70g (Rf: C 8 70%, C 10 25%, mixture of C ₁₂ 5%) CH ₂ CC (CH ₃ ) COO [(C ₂ H ₄ O) ₇ (C ₃ H ₆ O) ₃ ] H 25 g CH ₂ CHCHCOOCH ₂ CH ₂ OH 5 g Ethanol 300 g is charged, and a sufficient nitrogen atmosphere is added with stirring. After that, 4 g of azobisisobutyronitrile was added, and the temperature was raised to 60 ° C.
The reaction was performed for 24 hours. A ternary copolymer solution having a solid content of 25% by weight and having good transparency was obtained. In Examples described later, this was further diluted with ethanol, and adjusted to a solid content concentration of 20% by weight for use.

Reference Example 2 In a separable flask equipped with a stirrer, a condenser and a thermometer, a nonionic surfactant (HLB18) 7.5 g CH ₂ = CHCOOCH ₂ CH ₂ Rf (same as Reference Example 1) 70 g CH ₂ = CCl ₂ 10 g CH ₂ CC (CH ₃ ) COOCH ₂ C ₆ H ₅ 20 g CH ₂ CHCHCOOCH ₂ CH ₂ OH 5 g Acetone 75 g Charge 250 g of water , 2,2'-azobis (2-aminodipropane) ・
2.5 g of dihydrochloride was added, and the mixture was heated to 70 ° C. and reacted for 4 hours. A quaternary copolymer latex having a solid content of 26% by weight and having good transparency was obtained. In the following examples, this was diluted with water and adjusted to a solid content concentration of 20% by weight for use.

EXAMPLE Water was added to 2.5 parts by weight of the terpolymer solution obtained in Reference Example 1 to make up to 100 parts by weight, and a polyester cloth or polyester / polyester was added to this diluent (antifouling water / oil repellent). After immersing the cotton-blend cloth for 5 seconds, squeeze it with a mangle,
It was 60% by weight. The squeezed cloth was dried at 80 ° C. for 10 minutes.

Water was added to 2.5 parts by weight of the quaternary copolymer latex obtained in Reference Example 2 to make up to 100 parts by weight, and each of the above treated cloths was placed in the water and oil repellent thus prepared for 5 seconds. After immersion, it was squeezed with a mangle, and the squeezing rate at that time was also 60% by weight. After drying this squeezed cloth at 80 ° C for 10 minutes,
Heat treatment was performed at 150 ° C. for 3 minutes.

Comparative Example 1 In the example, only the antifouling water / oil repellent treatment was performed, and the dried cloth was heat-treated at 150 ° C. for 3 minutes.

Comparative Example 2 In the example, only the water / oil repellent treatment was performed, and the dried cloth was heat-treated at 150 ° C. for 3 minutes.

Comparative Example 3 To 2.5 parts by weight of the terpolymer solution obtained in Reference Example 1 and 2.5 parts by weight of the quaternary copolymer latex obtained in Reference Example 2,
Water was added to 100 parts by weight, and a polyester cloth or a polyester / cotton blended cloth was immersed in the mixture for 5 seconds, and then squeezed with a mangle (a squeezing rate of 60% by weight).
After drying for minutes, heat treatment was performed at 150 ° C. for 3 minutes.

Comparative Example 4 In the example, first, immersion and drying were performed with a water and oil repellent, then immersion and drying were performed with an antifouling water and oil repellent, and finally heat treatment was performed at 150 ° C. for 3 minutes. In this case,
Due to the effect of the previously treated water and oil repellent, the antifouling water and oil repellent hardly penetrated into the cloth.

The following items were tested for the fabrics treated in the above Examples and Comparative Examples, and the results are shown in the following Table. Water repellency test: Spray method of JIS L-1092 Oil repellency test: AATCC Test Method 118 Stain removal test: 2 g of heavy oil B was dropped on the treated cloth, and sandwiched between polyethylene sheets. A load was applied and, in this state, it was left in an atmosphere at 80 ° C. for 1 hour. Thereafter, it was washed at 40 ° C. for 15 minutes using a 0.2% by weight aqueous solution of a synthetic detergent for clothing (JIS K-3371), and dried at room temperature. The lightness index of this laundry was measured with a colorimeter CM-1000 manufactured by Minolta. Table polyester cloth polyester / cotton blend fabric Example water- test oil repellency test soil release test water- test oil repellency test soil release test Example 100 7 68 100 6 73 Comparative Example 1 70 7 65 50 6 72 〃 2 100 7 12 100 6 16 ３ 3 90 6 35 80 5 38 ４ 4 100 7 14 100 6 16 (untreated cloth) 0 0 40 0 0 45

Claims (1)

(57) [Claims] 1. A water-repellent property (JISL-1092) comprising a solution or a dispersion of a polyfluoroalkyl group-containing (meth) acrylate copolymer having a hydrophilic group.
Spray test method) After being treated with an antifouling water and oil repellent of 80 or less and dried, a water repellent performance (JIS L-) comprising a solution or dispersion of a polyfluoroalkyl group-containing (meth) acrylate copolymer is used. 1092 spray test method)
A method for treating a fiber cloth, comprising treating with at least 90 water and oil repellents, drying, and then heat treating.