JPH05320577A - Coating resin and coating method - Google Patents

Abstract

PURPOSE:To obtain a coating resin capable of coating without developing the color migration from products even under a severe conditions, suitable for coating fabrics dyed with disperse dye by incorporating an oil-soluble coating resin such as an acrylic resin with a thermosetting resin. CONSTITUTION:The objective resin can be obtained by incorporating (A) 100 pts.wt. of an oil-soluble resin selected from acrylic resins, urethane resins and silicone resins with (B) 5-100 pts.wt. of a thermosetting resin, from which melamine and its derivatives as the monomers are excluded. The component B is e.g. phenol resin, urea resin, unsaturated polyester resin, being pref. selected depending on the type of the component A. For example, when the component A is an acrylic resin, the component B is e.g. urea resin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating method for a cloth dyed with a disperse dye and a resin suitable for the processing.

[0002]

2. Description of the Related Art Disperse dyes are used for dyeing hydrophobic dense fibers such as polyester fibers, nylon fibers and triacetate fibers, and the cloth dyed with the disperse dyes is not subjected to a pretreatment and is treated by a conventional method. It is known that when the coating process (hereinafter referred to as “non-treatment method”) is performed, the product causes color transfer due to transfer sublimation. that is,
This is because the coating resin and its solvent swell the fiber, draw the dyed disperse dye to the fiber surface, and facilitate transfer sublimation.

On the other hand, prior to coating the cloth dyed with the disperse dye, melamine or its derivative is added,
After that, coating with a normal method (hereinafter, "conventional method")
That. It is known that the occurrence of color transfer of the product can be prevented by carrying out (). This is because the applied melamine or the like forms a dense melamine film and prevents migration of the sublimated dye.

As a method of imparting melamine and the like, there are methods described in Japanese Patent Application Laid-Open No. 50-95583 and Japanese Patent Publication No. 2-8068. In the former method, the cloth is dipped in an aqueous solution containing 10% of melamine or its derivative and 1% of acetic acid, squeezed, heat treated in saturated steam at 100 ° C. for 2 minutes, and then subjected to ordinary coating. In the latter method, water is added to 5 parts of melamine (Sumitex resin M-3) and 0.5 part of catalyst (Sumitex accelerator EPX) to make the total amount 1
After immersing the cloth in an aqueous solution of
This is that microwave heating is performed for 10 minutes in saturated steam at 0 ° C. to perform condensation treatment, and then ordinary coating processing is performed. Both methods are performed in aqueous solution so that the fibers do not swell during processing.

[0005]

The coating-processed cloth is used for ski clothes, windbreakers, umbrellas, etc., and quality standards for each color transfer are defined. For example, quality standards for Western umbrellas (hereinafter, "Umbrella standards")
That. ), There is a test cloth overlaid with the same coating white fabric, a load of 200 gr is applied, and the product is placed in a dryer at 80 ° C. for 24 hours, and a standard value of grade 3 or higher is an acceptable product. .. However, this Western umbrella standard defines the minimum quality standard. Color transfer may occur, and it is desired that there is no color transfer under more severe test conditions.

It is an object of the present invention to provide a coating method and a coating resin which do not cause color transfer to a product even under severer conditions. The stricter standard than the Western umbrella standard is a test method in which the product is left to stand in a dryer at 100 ° C. for 48 hours with a load of 4.5 Kg, and the standard value of grade 3 or higher is a passing product.

[0007]

The coating resin of the present invention is an oil-soluble resin used for ordinary coating processing.
For example, for 100 parts by weight of a resin selected from acrylic resin, urethane resin and silicone resin, 5 to 100 parts of thermosetting resin excluding melamine and its derivatives are used.
It is a mixture of parts by weight. In the present specification, the thermosetting resin is a resin in which a liquid or powdery base material forms a three-dimensional network structure by heating or reacting with a curing agent (crosslinking agent) and exhibits an irreversible change.

As the thermosetting resin excluding melamine and its derivatives, phenol resin, urea resin, epoxy resin, unsaturated polyester resin, allyl resin, silicon resin, polyurethane resin, benzoguanamine resin, polyfunctional alkyd resin, etc. There is. These resins may be appropriately selected depending on the type of oil-soluble coating resin. For example, when the oil-soluble coating resin is an acrylic resin, urea resin, epoxy resin, polyfunctional alkyd resin, and phenol resin can be used.

The coating method of the present invention is characterized by applying the coating resin to a cloth dyed with a disperse dye.

[0010]

The inventor of the present invention has previously filed (Japanese Patent Application No. 2-32771)
No. 9) proposed a resin for coating in which melamine or a derivative thereof is mixed with an ordinary oil-soluble coating resin. It has been confirmed that melamine or a derivative thereof can be applied to a coating process without mixing with an oil-soluble acrylic resin, urethane resin, or silicone resin to form a uniform phase, and does not change with time. The present invention was made as part of research to obtain a resin that can be mixed with a usual oil-soluble coating resin and does not cause color transfer even under stricter standards, and a resin having the same action as that of melamine or a derivative thereof can be obtained. It was obtained in the process of exploration.

When the usual oil-soluble coating resin is an acrylic resin, a thermosetting resin such as a urea resin, an epoxy resin, a polyfunctional alkyd resin or a phenol resin can be used.

In the method of the present invention, the coating resin having the function of preventing water sublimation and migration sublimation is applied to the cloth by the usual coating method, so that the conventional coating apparatus can be used as it is. Compared with the conventional method, the number of work steps can be reduced, and a product that does not cause color transfer even under severe test conditions can be obtained.

If the base cloth is subjected to a water repellent treatment prior to the method of the present invention, the resin does not enter the inside of the fiber and the texture before the coating treatment can be maintained.

[0014]

Example 1 A polyester pond was dyed with the following dyes and dyeing densities to obtain base fabrics a to d. Sumikaron Let S-GG 4.0% Sumikaron Let S-RPD 3.5% Sumikaron Belt SE-BL 0.5% Sumikaron Yellow S-RPD 0.5%

Sumikaron is a trademark of Sumitomo Chemical Co., Ltd. for disperse dyes.

After the above-mentioned base fabrics a to d are treated with a fluorine-based water repellent material, they are coated with the following coating resins (a) to (d), dried at 100 ° C. for 30 seconds and then at 150 ° C. for 4 seconds.
After performing a dry heat treatment for 5 seconds, test cloths A to D were obtained.・ Coating resin formulation (a) (b) (c) (d) BX-14 (Negami Kogyo acrylic resin) 100 100 100 100 Coronate L (Nippon Polyurethane Isocyanate) 2 2 2 2 Beccosol 1323-60-EL 15 ---Pleiofen 5010-15--Heckamin P-138--15-Epiclone H-201-60BT---15 MB2000 (Negami Kogyo's catalyst for butyl melamine) 1 1 1 1 Ethyl acetate (solvent) XXXX

Here, Beckol 1323-60-EL is a general-purpose short oil type alkyd resin manufactured by Dainippon Ink and Chemicals, PRIOFEN 5010 is a resol type phenolic resin manufactured by Dainippon Ink and Chemicals, and Beckamine P-138 is Dainippon Ink Chemicals. Butylated urea resin manufactured by Kogyo Co., Ltd., Epiclon H-201-60BT is an isocyanate-curable epoxy resin manufactured by Dainippon Ink and Chemicals.

The following tests were carried out on the obtained test cloths A to D. A white cloth coating surface coated with the same resin formulation is attached to the coating surfaces of the test cloths A to D, sandwiched between two glass plates for a sweat tester, and a load of 4.5 kg is applied. Place in a dryer at 100 ± 2 ° C and let stand for 48 hours. Remove the test cloth and cool to room temperature.

The stains (color transfer amount) attached to the white fabric after the test were evaluated by a gray scale for staining, and the results are shown in Table 1. For comparison, the results of the untreated method and the test results based on the Western umbrella standard are also shown.

[0020]

[Table 1]

As is apparent from Table 1, according to the method of the present invention, the standard value is 4 to 5 in the Western umbrella standard, and the standard value is 3 or more even in the stricter standard, and there is no possibility of causing color transfer. Of the four resins, urea resin is the best.

Example 2 A polyester pond was dyed with the following dyes and dyeing densities to obtain base fabrics e to h. Sumikaron Let S-GG 4.0% Sumikaron Let S-RPD 3.5% Sumikaron Belt SE-BL 0.5% Sumikaron Yellow S-RPD 0.5%

After the above-mentioned base fabrics e to h are subjected to a fluorine-based water repellent treatment, they are coated with the following coating resins (e) to (h), dried at 100 ° C. for 30 seconds, and then dried at 150 ° C. for 4 seconds.
Test cloths E to H were obtained by dry heat treatment for 5 seconds.・ Coating resin formulation (e) (f) (e) (h) BX-14 (Negami Industrial acrylic resin) 100 100 100 100 Coronate L (Nippon Polyurethane Isocyanate) 2 2 2 2 Beccosol 1323-60-EL 100 ---Pleiofen 5010-100--Hevamine P-138--100-Epiklon H-201-60BT---100 MB2000 (Negami Kogyo's catalyst for butyl melamine) 10 10 10 10 Ethyl acetate (solvent) XXXX

The same test as in Example 1 was conducted on the obtained test cloths (e) to (h). The results are shown in Table 2. For comparison, the results of the untreated method and the test results based on the Western umbrella standard are also shown.

[0025]

[Table 2]

As is clear from the comparison between Table 1 and Table 2,
Regardless of the type of thermosetting resin mixed in, the effect of preventing color transfer increases as the addition amount increases.

[0027]

The product treated by the method of the present invention has a standard value of 4 or more according to the Western umbrella standard, and maintains the standard value of 3 or more even under stricter test conditions, so that color transfer of the product can be prevented. .. And the effect is 3rd grade or higher irrespective of the kind of resin mixed.

Further, the coating resin of the present invention is manufactured by mixing a thermosetting resin with an ordinary oil-soluble coating resin, so that the manufacturing is easy and the transfer processing is performed at the same time as the coating processing. Therefore, the number of working steps can be reduced as compared with the conventional method. Further, if the base fabric is subjected to water repellent treatment prior to the coating treatment of the present invention, a product having a better texture can be obtained.

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Claims (2)

[Claims] 1. A thermosetting resin other than melamine and its derivatives is mixed in an amount of 5 to 100 parts by weight with respect to 100 parts by weight of a resin selected from oil-soluble acrylic resins, urethane resins and silicone resins. , Coating resin. 2. The cloth dyed with a disperse dye,
Characterized by imparting the resin for coating described,
Coating method.