JP2925307B2 - Coating of dyed fabric - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for coating a fabric dyed with a disperse dye, and more particularly to a method for preventing transfer dyeing caused by coating. is there.

<< Conventional technology >> Disperse dyes are used for dyeing hydrophobic dense fibers such as polyester fiber, nylon fiber and triacetate fiber, and the fabric dyed with this disperse dye is subjected to a usual method without pretreatment. It is known that when a coating process is performed (hereinafter, referred to as a “non-treatment method”), the product undergoes color transfer due to transfer sublimation. This is because the coating resin and the solvent thereof swell the fiber, draw out the dyed disperse dye to the fiber surface, and facilitate migration sublimation.

On the other hand, melamine or a derivative thereof is applied prior to coating of a fabric dyed with a disperse dye, and then coated by a usual method (hereinafter, referred to as “conventional method”).
Then, it is known that color transfer of the product can be prevented. This is because the applied melamine or the like forms a dense melamine coating to prevent the transfer of the sublimed dye. As a method of imparting melamine or the like,
There are those described in JP-A-50-95583 and JP-B-2-8068. In the former method, the cloth is immersed in an aqueous solution containing 10% of melamine or a derivative thereof and 1% of acetic acid, squeezed, heat-treated in saturated steam at 100 ° C. for 2 minutes, and then subjected to ordinary coating. The latter method is based on melamine (Sumitec Resin M-
3) 5 parts and 0.5 parts of catalyst (Sumitex Accelerator EPX) were mixed with water by adding water to make the total amount 100 parts, squeezed, squeezed, and condensed by microwave heating in saturated steam at 100 ° C for 10 minutes. After processing, normal coating processing is performed. Both methods are performed with aqueous solutions so that the fibers do not swell during processing.

<< Problems to be Solved by the Invention >> Coated fabrics are used for ski clothes, windbreakers, umbrellas and the like, and quality standards for color transfer are defined. For example, as a quality standard for umbrellas (hereinafter referred to as "umbrella standards"), a test cloth is coated with the same coated white fabric, loaded with 200 gr, placed in a dryer at 80 ° C for 24 hours, Value is 3
There is a thing that a grade or higher is a passing product. However, these umbrella standards set minimum quality standards,
For example, products processed by the non-treatment method may cause color transfer when left in a wound state for a long time or when stored in a packaged state for a long time. Is desired.

An object of the present invention is to provide a coating method in which color transfer does not occur in products even under more severe conditions. In the present invention, tests were performed under stricter standards.
The content of the test is that the test is carried out in a dryer at a temperature of 100 ° C. for 48 hours and 72 hours under a load of 4.5 kg.

<Means for Solving the Problems> The method for coating a dyed fabric according to claim 1 is characterized in that an oil-soluble acrylate-based copolymer having acrylic acid as a copolymer component or a hydroxyl group as a reactive functional group. Crosslinking of the acrylate-based copolymer to a resin composition obtained by mixing 5 to 100 parts by weight of an oil-soluble butylated melamine resin partially containing a methylol group with 100 parts by weight of an oil-soluble silicone resin having A coating resin solution is prepared by adding an agent or a catalyst of a silicone resin and a catalyst of the butylated melamine resin, and the coating resin solution is applied to a cloth dyed with a disperse dye, and then heat-treated. Things.

The method of coating a dyed fabric according to claim 2, wherein the oil-soluble butylated melamine resin partially containing a methylol group is added to 100 parts by weight of the oil-soluble one-pack type urethane resin.
To a resin composition obtained by mixing parts by weight, a catalyst for the butylated melamine resin was added to prepare a coating resin liquid,
The coating resin solution is applied to a fabric dyed with a disperse dye, and then heat-treated.

<< Action >> The inventor of the present application discloses an oil-soluble acrylate-based copolymer having acrylic acid as a copolymer component, an oil-soluble silicone resin having a hydroxyl group as a reactive functional group, or an oil-soluble one-pack type. An oil-soluble butylated melamine resin partially containing a methylol group was mixed with the urethane resin to prepare a resin composition. This resin composition forms a uniform phase, does not change with time, and is suitable for coating processing.

In coating the dyed fabric, a crosslinking agent, a catalyst and the like are added to the resin composition to prepare a resin solution for coating, and the resin solution for coating is applied to the fabric dyed with the disperse dye, and then heat-treated. Thus, a network-like resin film is formed on the surface of the dyed fabric. Such a processing method,
Conventional coating equipment can be used as it is,
The number of working steps can be reduced as compared with the conventional method, and a product that does not transfer color even under severe test conditions can be obtained. If the base fabric is subjected to a water-repellent treatment prior to the dye transfer prevention processing method of the present invention, the coating resin liquid does not enter the inside of the fiber, and the texture before the coating processing can be maintained. .

<< Examples >> [Example 1] Ponge, Tromat, and Jacquard weave polyester taffeta were dyed with the following dyes and dyeing concentrations to obtain base fabrics i to viii.

Here, Sumicaron is a trademark of Sumitomo Chemical Co., Ltd. for a disperse dye, and Kiwaron is a trademark of Kiwa Chemical Industry Co., Ltd. for a disperse dye.

The following base fabrics i to viii are treated with a fluorine-based water-repellent material, coated with a coating resin (A) having the following formulation, dried at 100 ° C. for 30 seconds, and then heat-treated at 150 ° C. for 45 seconds to obtain a test cloth. I obtained VIII.

・ Coating resin formulation (A) BX-14 (Acrylic resin manufactured by Negami Kogyo) 100 Coronate L (Isocyanate manufactured by Nippon Polyurethane) 2 Super Beckamine J-820-60 15 (Butylated melamine resin manufactured by Dainippon Ink and Chemicals) MB2000 (Catalyst of butylated melamine resin manufactured by Negami Kogyo) 1 Ethyl acetate (solvent) X The following tests were performed on the obtained test cloths I to VIII.

A coating surface of white fabric coated with the same resin formulation is attached to the coating surfaces of test cloths I to VIII, 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 leave for 48 and 72 hours.

 Remove the test cloth and cool to room temperature.

The stain (color transfer amount) adhering to the white fabric after the test was graded using a gray scale for staining, and the results are shown in Table 1. For comparison, the results of the untreated method, those of the conventional method, and test results of the Western umbrella standard are also shown.

As is clear from Table 1, the test cloths I, IV, VII and VIII among the cloths coated by the conventional method had the standard value of 1
To 3, which may cause color transfer. However, according to the method of the present invention, these also have a standard value of 4 or more,
There is no risk of color transfer. According to the method of the present invention, even if the woven structure of the base fabric and the type and concentration of the disperse dye are changed, it is shown that the fourth grade or higher is secured.

Example 2 A polyester flat taffeta was dyed red according to the following formulation to obtain a base cloth ix.

Dye and dyeing concentration owf Sumicaron Yellow S-RPD 2.0% Sumicaron Red S-RPD 4.0% Sumicaron Rubin SE-RPD 1.2% After the base fabric ix is treated with fluorine-based water repellent, it is divided into two. On one side, a resin having the following coating formula (B) was coated, and on the other side, a resin having the following coating formula (C) was coated, dried at 100 ° C. for 30 seconds, and then subjected to dry heat treatment at 150 ° C. for 45 seconds. X was obtained.

・ Coating resin formulation (B) Crisbon 2116 100 (one-part urethane resin manufactured by Dainippon Ink and Chemicals) Super Beckamine J-820-60 30 MB2000 2 Ethyl acetate 20 ・ Coating resin formulation (C) Paracron PE-30 100 ( Negami Kogyo silicone resin) Catalyst C46 2 (Catalyst of Negami Kogyo silicone resin) Super Beckamine J-820-60 10 MB2000 1 Ethyl acetate X The obtained test cloths IX and X were tested in the same manner as in Example 1. The test was performed. Table 2 shows the results.

As is clear from Table 2, the effect of preventing color transfer is not related to the type of resin to be mixed.

[Example 3] A ponge, a flat taffeta and a twill-woven polyester fabric were dyed with the following dyes and dyeing concentrations to obtain base fabrics I to C.

Further, the base fabric (c) was printed with the following dye and the color paste having the dyeing concentration described below to obtain a base fabric (d).

Type and concentration of dye in color paste for printing Print TD Navy Blue DBRF 7.0% Kiwaron Polyester Black RLS 1.6% Samarone Yellow 6GSL 0.3% Diamonds Blue BG-FS 3.5% There is a trademark for dyes, and Dyanix is a trademark of Mitsubishi Chemical Corporation for disperse dyes.

After subjecting the base fabrics A, B, and D to a fluorine-based water-repellent treatment, the test cloth A is coated with the following coating resin (D), the test cloth B is coated with the following formulation resin (E), and the test cloth D Coating the coating resin (A) of the prescription
After drying for 2 seconds, a dry heat treatment was performed at 150 ° C. for 45 seconds to obtain test cloths a to c.

-Coating resin formulation (D) (E) BX-14 100 100 Coronate L 22 Super Beckamine J-820-60 5 100 MB 2000 1 10 Butyl acetate XX Same test as in Example 1 for the obtained test cloths a to c The method was tested. Table 3 shows the results.

As is evident from Table 3, the effect of preventing color transfer increases with an increase in the amount of Super Beckamine J-820-60 mixed.

<< Effects of the Invention >> As is clear from Tables 1 to 3, the products treated according to the method of the present invention have a test temperature of 100 ° C.
The standard value of 4 or more is maintained, and color transfer of the product can be prevented even under more severe test conditions. And the effect is
Regardless of the type and concentration of the disperse dye, the woven structure of the base fabric, and the type of the resin to be mixed, it is of the fourth grade or higher, and the disperse dye that can be used as in the conventional method is not limited.

Further, the coating method of the dyed fabric of the present invention is manufactured by mixing an oil-soluble butylated melamine resin into an oil-soluble acrylate-based copolymer, an oil-soluble silicone resin or a one-pack type urethane resin. Because
The production of the resin composition is simple, and a crosslinking agent, a catalyst, and the like are added to the resin composition during coating processing to prepare a resin liquid for coating, and the resin liquid for coating is applied to a fabric dyed with a disperse dye. By forming a network-like resin film on the surface of the dyed fabric by cross-linking, it is possible to perform color transfer prevention processing at the same time as coating processing, and it is possible to reduce the number of work steps compared to the conventional method. it can. Furthermore, if the base fabric is subjected to a water-repellent treatment prior to the coating method of the present invention, a product having a better texture can be obtained.

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification code FI D06M 15/423 D06M 15/423 15/564 15/564 15/643 15/643 (56) References JP-A-60-181365 ( JP, A) JP-B-57-49052 (JP, B2) JP-B, 1-29911 (JP, B2) JP-B, 62-3275 (JP, B2)

Claims (2)

(57) [Claims] 1. An oil-soluble acrylate copolymer having acrylic acid as a copolymer component or an oil-soluble silicone resin having a hydroxyl group as a reactive functional group.
Parts by weight, a resin composition obtained by mixing 5 to 100 parts by weight of an oil-soluble butylated melamine resin partially containing a methylol group, a crosslinking agent for the acrylate ester-based copolymer or a catalyst for a silicone resin, Adding a catalyst of the butylated melamine resin to prepare a coating resin liquid, applying the coating resin liquid to a cloth dyed with a disperse dye, and then subjecting the coated resin liquid to a heat treatment; . 2. A resin composition comprising 100 parts by weight of an oil-soluble one-component urethane resin and 5 to 100 parts by weight of an oil-soluble butylated melamine resin partially containing a methylol group is added to the resin composition. A coating method for a dyed cloth, comprising preparing a coating resin liquid by adding a catalyst of a melamine resin, applying the coating resin liquid to a cloth dyed with a disperse dye, and then performing a heat treatment.