JPH04241178A - Coating agent and polyester fiber cloth coated therewith - Google Patents

Abstract

PURPOSE:To obtain the subject coating agent having excellent property to prevent the sublimation and migration of a disperse dye in a polyester fiber fabric by compounding an acrylic resin liquid with a methyl hydrogen silicone oil and an organotin compound. CONSTITUTION:A polyester fiber cloth dyed with a disperse dye is coated with a processing agent produced by mixing an acrylic resin liquid [e.g. (meth)acrylic acid ester] and a methyl hydrogen silicone oil expressed by formula (m is 0 or positive integer; n is >=40) and compounding the mixture with a crosslinking catalyst consisting of an organotin compound using a knife-coater as a coating means and the coated cloth is heat-treated after drying the coating liquid to effectively prevent the sublimation and migration of the disperse dye to the coating film.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating agent capable of preventing migration and sublimation of disperse dyes, and to a polyester fiber fabric treated with the coating agent.

0002

[Prior Art] Conventionally, various coating processes have been applied to fabrics made of synthetic fibers or natural fibers in order to impart functions such as waterproofness, windproofness, water repellency, and flame retardancy. Coating processing of fiber fabrics such as nylon and polyester fiber fabrics is particularly in great demand. However, nylon fiber fabrics are dyed using dyes with low sublimation properties, and the dyeing mechanism is mainly a chemical bond between the dye and the fiber substrate, so during the coating process, sublimation due to dye migration occurs. This phenomenon rarely occurs, and it is easy to obtain coated fabrics that are practical. However, when coating polyester fiber fabrics dyed with disperse dyes, when the coated surfaces overlap, or when the coated surfaces overlap with each other, When overlapped with fabric or film, migration and sublimation of disperse dyes from the coating surface often occurs, resulting in contamination. Therefore, in order to improve these problems, we have developed methods such as selectively using dyes with low sublimation properties, providing barrier layers such as melamine resin on polyester fiber fabrics, subjecting polyester fiber fabrics to plasma treatment, and using coating processing agents. Various improvements have been attempted, such as adding a dye adsorbent to the coating surface and coating the coating surface with a resin having stronger hydrophilicity than the coating resin film (see Japanese Patent Publication No. 1-52508). However, in either case, it is not possible to completely solve these problems; rather, the processability may be poor, the hues that can be dyed are limited, and the texture of the coated fabric may deteriorate. This causes problems such as difficulty in obtaining a processed surface with excellent water resistance.

0003

[Problems to be Solved by the Invention] The present invention provides a coating agent that can be stably applied to polyester fiber fabrics dyed with disperse dyes, and has extremely low migration and sublimation of disperse dyes, and polyester fibers that have excellent migration and sublimation fastness. An object of the present invention is to provide a fiber fabric coated product.

0004

[Means for Solving the Problems] The present inventors have effectively solved the above problems by incorporating methyl hydrogen silicone oil and an organic tin compound into a coating agent containing acrylic resin as a main component. I found a solution.

[0005] A coating agent made by blending acrylic resin with methyl hydrogen silicone oil and an organic tin compound is coated on a polyester fiber fabric dyed with a disperse dye and dried. It is believed that a barrier layer of methyl hydrogen silicone oil is formed and the desired effect is obtained.

[0006] In the present invention, the polyester fiber fabric may be any of woven fabric, knitted fabric, and non-woven fabric, and even if it is composed only of polyester fiber, it may be composed of polyester fiber and other fibers such as cotton, rayon, Nylon,
It may be a blended product, a mixed weave, or a mixed knitted product with acrylic fiber or the like.

[0007] Furthermore, the acrylic resin used in the present invention refers to a resin whose main component is an acrylic ester or a methacrylic ester, and which can be copolymerized with these monomers as a third component. Other monomers may be copolymerized. In particular, it is desirable to use an acrylic resin copolymerized with a monomer having a functional group such as a hydroxyl group, a carboxyl group, or an epoxy group. Note that the method for producing the acrylic resin is not particularly limited.

Next, the methyl hydrogen silicone oil used in the present invention is represented by the following general formula (where m is 0 or a positive integer, and n is an integer of 40 or more): This is usually called H oil.

[0009]

[Chemical formula 1]

[0010] An organotin compound is used as a crosslinking catalyst for methylhydrogen silicone oil, but if this catalyst is not used, methylhydrogen silicone oil will not be crosslinked and the barrier layer will not be fixed, resulting in a durable transition. Sublimation prevention ability cannot be obtained.

Examples of such organic tin compounds include dibutyltin dilaurate, dibutyltin maleate, dibutyltin maleate butyl ester, dibutyltin β-mercaptopropionate, dibutyltin dichloride, dioctyltin dichloride, dibutyltin dibromide, and dioctyltin. There are dibromide, tributyltin chloride, trioctyltin chloride, etc., and even if these are used alone,
Two or more types may be used in combination. Particularly preferred is the use of halogen-containing organotin compounds.

The coating agent of the present invention generally contains 1.0 to 70 parts by weight (preferably 2.0 to 40 parts by weight) of methyl hydrogen silicone oil per 100 parts by weight of the acrylic resin. , organotin compound 1
．． If the amount of methyl hydrogen silicone oil is less than 1.0 parts by weight, the ability to prevent the migration and sublimation of disperse dyes will be significantly reduced. On the other hand, if the amount exceeds 70 parts by weight, the blended resin liquid tends to separate, resulting in decreased storage stability.

Further, in the present invention, in order to impart solvent resistance to the acrylic resin, a crosslinking agent such as a polyisocyanate resin or a melamine resin may be added to the resin liquid.

[0014] Next, the solvent used for producing the acrylic resin liquid may be any solvent that dissolves the resin, such as toluene,
Examples include aromatic solvents such as xylene, ester solvents such as ethyl acetate, ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone, chlorine solvents such as 1,1,1-trichloroethane and perchloroethylene, and dimethylformamide. However, it is not limited to these. Further, these solvents may be used alone or in combination of two or more.

The coating method of the present invention may be a dry coating method, such as a knife coater, knife over roll coater, blanket knife coater, inverted knife coater, direct roll coater, reverse roll coater, gravure coater, kiss coater, bead coater, etc. Any of these can be preferably used.

[0016]

[Example] Example 1 Polyester taffeta (1250VIA manufactured by Kanebo Co., Ltd.) with a warp density of 80D/48f and a weft density of 80D/48f was mixed with a disperse dye (C.I. Red 152) 2% o. w. f. After dyeing at a temperature of 130°C using a dye, heat setting was performed at a temperature of 180°C for 1 minute. This dyed polyester fabric was coated with an acrylic resin liquid of the following composition using a knife coater, dried at a temperature of 120°C for 2 minutes, and then dried at a temperature of 17°C.
A coated fabric was obtained by heat setting at 0°C for 30 seconds. The amount of resin applied was 3 to 41 g/m2 (dry equivalent). The obtained coated fabric was tested according to the test method described below and was found to have little dye migration and sublimation. The test results are shown in Table 1. Compounded resin liquid Paraclone EX-210
100
Parts by weight [Acrylic resin solution manufactured by Negami Kogyo Co., Ltd. - solid content 19
% -COOH group-containing acrylic resin toluene solution 100%
Contains 5 parts by weight of methyl hydrogen silicone oil] Paraclone MB-111 Conc.
1.5 parts by weight (melamine crosslinking agent manufactured by Negami Kogyo Co., Ltd.)
Paraclone MB-2000 Conch
0.15 parts by weight
(Melamine crosslinking promoter manufactured by Negami Kogyo Co., Ltd.) Catalyst C-46
1.5 parts by weight (organotin compound manufactured by Negami Kogyo Co., Ltd.)

0017
Comparative Example 1 A coated fabric was produced in Example 1 except that the coating resin liquid was changed to the following formulation and other conditions were the same, and tested in the same manner as in Example 1. The results are shown in Table 1. Parachron KB-1000HV
100 parts by weight (-OH group-containing acrylic resin solution manufactured by Negami Kogyo Co., Ltd. -12% perchlorethylene solution-)
Paraclone MB-111 Conch
1.5 parts by weight (Melamine crosslinking agent manufactured by Negami Kogyo Co., Ltd.) Paraclon MB-2000 Conc.
0.1 part by weight
(Melamine crosslinking promoter manufactured by Negami Kogyo Co., Ltd.) Poroncoat P
5
Parts by weight (Silicon compound made by Shin-Etsu Chemical Co., Ltd. Texture adjuster) Catalyst PC

0.05 parts by weight (Catalyst for Poroncoat P manufactured by Shin-Etsu Chemical Co., Ltd. - halogenated organotin compound)

Examples 2 to 5 Coated fabrics were produced and tested in the same manner as in Example 1, except that the dyes used were changed to those shown below. The test results are shown in Table 1. Dyes used
Example 2 C. 1. blue 94
3.6% (o.w.f.
．． ) Example 3 Kiwalon Polyester Black R126 10.0% (o.w.f.)
(Disperse dye manufactured by Kiwa Chemical Industry Co., Ltd.)
Example 4 C. I. Violet 56
0.3% (o.w.f.)
C. I. red 146
0.8% (o
．． w. f. ) C. 1. blue 56
1.7% (o.w.f.) Example 5 C.
I. Yellow 192
0.87% (o.w.f.)
C. I. red 35
0.15% (o.w.f.)
C. 1. blue 26
0.013% (o.w.
f. )

Comparative Examples 2 to 5 Coated fabrics were produced and tested in the same manner as in Comparative Example 1, except that the dyes used were changed to those shown below. The test results are shown in Table 1. Dye used Comparative Example 2 Dye similar to Example 2 Comparative Example 3 Dye similar to Example 3 Comparative Example 4 Dye similar to Example 4 Comparative Example 5 Dye similar to Example 5

Example 6 The dye used was C.I. I. 2.1% of Red 153 (o.w.
f. ) A coated fabric was produced in the same manner as in Example 1, except that a coating composition having the following formulation was used, and a transfer sublimation test was conducted. The transfer sublimation test was also conducted on the coated fabric after the washing test. The results are shown in Table 2. Paraclone EX-210
100
Weight part Paraclone CL-conc
1
Part by weight (Isocyanate crosslinking agent manufactured by Negami Kogyo Co., Ltd.) Catalyst C-46

1 part by weight

Comparative Example 6 A coated fabric was produced in the same manner as in Example 6, except that the coating composition in Example 6 was changed to the following formulation.
I did a similar test. The test results are shown in Table 2. Paraclone EX-210
100
Weight part Paraclone CL-conc
1
Weight part

Comparative Example 7 A coated fabric was produced in the same manner as in Example 6, except that the coating composition of Example 6 was changed to the following formulation, and the same tests were conducted. The test results are shown in Table 2. Elcourt BX-14
100
Parts by weight (-COOH group-containing acrylic resin solution manufactured by Negami Kogyo Co., Ltd. - solid content 14%, toluene/ethyl acetate 9:1 solution) Paraclone CL-con
c.
1 part by weight The transfer sublimation test in the Examples was carried out by the following method. JIS method - 5cm x 5
A test fabric of cm is prepared, and the coated surface of the coated fabric is made by coating the same undyed polyester taffeta as the test fabric with the same coating agent used for each test fabric. .2Kg/cm2 load, temperature 120±2
The undyed fabric was left for 80 minutes at ℃, and the degree of contamination of the undyed fabric was graded using gray scale (JIS). N method - According to the JIS method, the undyed fabric is left to stand at a temperature of 60°C for 48 hours under a load of 0.4 g/cm2, and the degree of contamination of the undyed fabric is graded on a gray scale (JIS). K method - According to JIS method, under a load of 0.2 g/cm2 at a temperature of 9
The undyed fabric was left for 0 minutes and the degree of contamination of the undyed fabric was graded using gray scale (JIS). Washing test method - JIS
According to L-0844 method.

[0023]

[Table 1]

[0024]

[Table 2]

[0025]

[Effects of the Invention] The coating agent of the present invention has an excellent ability to prevent migration and sublimation of disperse dyes. Therefore, simply applying this coating agent to polyester fiber fabrics dyed with disperse dyes , it is possible to very effectively prevent the migration and sublimation of dyes, and at the same time, it is possible to sufficiently obtain the desired coating processing effect.

Claims (2)

[Claims] 1. A coating agent for polyester fiber fabric, which comprises blending an acrylic resin liquid with methyl hydrogen silicone oil and an organic tin compound. 2. A polyester having a coating layer capable of preventing migration and sublimation of the disperse dye, which is obtained by coating a polyester fiber fabric dyed with a disperse dye with the coating agent of claim 1 and drying the coating agent. type fiber fabric.