JPH10325080A - Antifouling coated fabric - Google Patents

Abstract

(57) Abstract: The present invention provides an antifouling coated fabric which stops migration of dyes without using special equipment or post-processing, and is free from contamination due to migration and has excellent flexibility. Is to be provided. An antifouling coated fabric of the present invention comprises, on at least one surface of a polyester fiber fabric dyed with a disperse dye, an acrylic resin containing an alkoxysilyl group and an acrylic resin having a glass transition temperature of 30 ° C. or higher. It is characterized in that at least one of the resins is coated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antifouling coated fabric which is less contaminated by migration of a disperse dye.

[0002]

2. Description of the Related Art Conventionally, the use of a cloth mainly composed of synthetic fibers alone has been lacking in performance such as waterproofness and water repellency. The above performance is given by coating with resin, and synthetic fibers are being developed for various uses. Among such synthetic fibers, at present, a coating fabric mainly composed of a nylon-based fiber is often used. Although there is an advantage that transfer sublimation is small, there are problems in performance such as dimensional stability, light fastness, and wrinkle resistance. From the viewpoint of these problems, expectations for a coated fabric mainly composed of polyester fibers are increasing in recent years. However, since polyester fibers are dyed with a disperse dye, the dye is liable to migrate and sublimate, and has a fatal drawback that a portion in contact with the coating surface is contaminated. It is considered that such a defect is caused only by the fact that the dye is physically pressed into the fiber and does not have a chemical bond unlike the nylon-based fiber. In addition, the acrylic resin and urethane resin that are usually coated have a loose coating layer structure in order to emphasize flexibility, and do not stop the dye that has migrated in the polyester fiber. It is considered that the dye migrated. According to such an idea, in order to reduce the dye migration of the coating layer,
It is considered that migration can be prevented by forming a dense coating layer. As examples based on this idea, a method of adding a photoreactive agent to a coating resin and then irradiating ultraviolet rays to form a cross-linked structure in the coating layer or a method of obtaining a dense structure by irradiating an electron beam in a specific atmosphere is proposed. Have been. However, such a method is not versatile due to an increase in the number of steps and the use of a specific device, and furthermore, there is a problem that when the coating resin has a dense structure, the flexibility is reduced.

[0003]

SUMMARY OF THE INVENTION In view of the background of the prior art, the present invention stops the transfer of dyes without using special equipment and without post-processing, so that there is no contamination due to transfer and more flexibility. Is intended to provide an excellent antifouling coated fabric.

[0004]

The present invention employs the following means in order to solve the above problems. That is, the antifouling coated fabric of the present invention comprises, on at least one surface of a polyester fiber fabric dyed with a disperse dye, an acrylic resin containing an alkoxysilyl group and an acrylic resin having a glass transition temperature of 30 ° C. or higher. Characterized in that at least one of them is coated.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a coating fabric of a polyester fiber fabric dyed with a disperse dye,
Intensive investigations have been made in view of the desire for improvement of contamination due to migration. As a result, a specific resin, that is, an acrylic resin containing an alkoxysilyl group or a glass transition temperature of 30 has been developed.
It has been found that the above-mentioned problems can be solved at once by laminating an acrylic resin having a low elongation of not more than a certain degree, particularly preferably an acrylic resin having a low elongation of a certain degree or less.

[0006] The polyester fiber fabric referred to in the present invention is a fiber made of polyethylene terephthalate or polybutylene terephthalate, or a fiber obtained by copolymerizing with a component such as polyethylene glycol, adipic acid, isophthalic acid, or isophthalic acid sulfonate. It may be. Such polyester fibers may be short fibers or long fibers, and may be blended with natural fibers such as wool or cotton or synthetic fibers such as nylon in a range that does not hinder the performance, depending on the application to be used. It can be used in a configuration such as knitting or non-woven fabric. The fiber fabric thus obtained can be dyed with a disperse dye to obtain a polyester fiber fabric.
Such disperse dyes are not particularly limited as long as they are conventionally used dyes, and the dyeing conditions are not particularly limited as long as the dyeing conditions are those conventionally used.

The disperse dye referred to in the present invention is not particularly limited as long as it is a disperse dye conventionally used for dyeing polyester fibers. The conditions for dyeing are not particularly limited as long as they are conventionally performed.

The acrylic resin used in the present invention preferably has a dense film structure and a certain degree of flexibility in order to prevent the disperse dye from migrating. A resin that can achieve such conditions is an acrylic resin containing an alkoxysilyl group, specifically, an acrylic resin called an acrylic silicon resin, and an acrylic resin having a glass transition temperature of 30 ° C. or higher. Acrylic resin having a glass transition temperature in the range of 30C to 120C from the viewpoint of flexibility is more preferable.

From the viewpoint of flexibility, it is generally considered that such an acrylic resin preferably has a higher elongation percentage, but in the present invention, the higher the elongation percentage, the more the structure of the film becomes loose, and the higher the elongation percentage, Are more likely to migrate,
Preferably, 100% or less, more preferably 80% or less of acrylic silicone resin is used.

The acrylic resin has a glass transition temperature of 30 ° C. when used in combination with a crosslinking agent or a thermosetting resin.
The elongation can be increased as described above, and the elongation can be further reduced.

Such commonly used crosslinking agents such as peroxide compounds, isocyanate resins, melamine resins, urea resins, carboxylic acid resins, epoxy resins, phenol resins, quinone dioxime resins, Thermosetting resins such as methacrylic acid resins and maleimide resins can be used.

The method of coating the acrylic resin is not particularly limited, and examples thereof include a reverse roll coater, a forward rotation roll coater, a gravure coater, a kiss roll coater, a cast roll coater, a curtain coater, a blade coater, and a rod coater. ,
Coating can be performed using a knife coater, a squeeze roll coater, or the like.

[0013]

EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.
The evaluation in the examples was performed by the following method.

(Dye transferability) Contaminated cloth (5 × 3 cm) obtained by coating the same resin as the test piece on a white base cloth which is the same as the test surface (5 × 3 cm) and is not dyed. In a state where the coating surfaces are brought into contact with each other, the sheet is sandwiched between two glass plates, and 4.5 is placed on the glass plate.
Apply a load of kg. The glass plate in such a state is subjected to a heat treatment at 130 ° C. × 90 minutes using a constant temperature heat treatment machine,
The state of the stained cloth was observed, and the evaluation was made by gray scale.

(Flexibility) The test piece was evaluated by touch to the flexibility of the comparative example.

◎: More flexible than Comparative Example ○: Same flexibility as Comparative Example △: Slightly inferior to Comparative Example ×: Inferior to Comparative Example Examples 1 to 6, Comparative Example 1 Consisting of polyethylene terephthalate Filament yarn, 50 denier 24 filament for warp, 75 for weft
A plain weave of 36 denier 36 filaments is scoured with 98 ° C. hot water containing a nonionic surfactant and sodium carbonate, washed with water, dried at 130 ° C., pin tenter set at 180 ° C., and then dispersed dye (Resoline Blue F)
BL) After dyeing at 3% owf and a temperature of 130 ° C., reduction washing and water washing were performed according to a conventional method, and heat setting was performed at a temperature of 170 ° C. An acrylic resin having an alkoxysilyl group having a different elongation is applied to the thus obtained dyed fabric by a knife coating method so as to be 10 g / m ^2, and then dried at 130 ° C. for 3 minutes to obtain a polyester. A system-coated fabric was obtained. In addition, an acrylic resin generally used as a comparative example was processed under the same conditions as in the example to obtain a polyester-based coated fabric.

[0017]

[Table 1] As can be seen from Table 1, those of the examples compared to the comparative examples
It can be seen that the application of the acrylic resin having an alkoxysilyl group reduces the transfer of the disperse dye. Furthermore,
It can be seen that the elongation percentage of the acrylic resin affects the effect of preventing migration and flexibility, and that the preferred elongation percentage is 100% or less.

Examples 7 to 11 and Comparative Examples 2 to 3 The following woven fabrics 1 and 2 were coated with various acrylic resins having different glass transition temperatures by knife coating at 15 g / m ² , and at 130 ° C. for 2 minutes. Table 2 shows the results of the migration test performed after the heat treatment was performed.

Fabric 1: A plain woven fabric using 50 denier 24 filaments for the warp and 75 denier 36 filaments for the weft, using polyethylene terephthalate filaments, is scoured in hot water of 98 ° C. containing a nonionic surfactant and sodium carbonate,
It was washed with water, dried at 130 ° C., and set with a pin tenter at 180 ° C.

Fabric 2: Fabric 1 is treated with a disperse dye, Resolin Blue FBL, at 3% o.
After dyeing at ef and a temperature of 130 ° C. for 60 minutes, reduction washing and water washing were carried out according to a conventional method, and heat setting was performed at a temperature of 170 ° C.

[0021]

[Table 2] From Table 2, it can be seen that in Examples having a glass transition temperature of 30 ° C. or higher, migration of the disperse dye was prevented.

[0022]

According to the present invention, it is possible to obtain a polyester-coated fabric which is flexible and excellent in preventing disperse dye migration and sublimation without increasing the number of steps or using a specific device.

Claims (3)

[Claims] At least one surface of a polyester fiber fabric dyed with a disperse dye is coated with at least one of an acrylic resin containing an alkoxysilyl group and an acrylic resin having a glass transition temperature of 30 ° C. or higher. Antifouling coated fabric characterized by the following. 2. The antifouling coated fabric according to claim 1, wherein the acrylic resin has an elongation of 100% or less. 3. The acrylic resin contains at least one of a crosslinking agent and a thermosetting resin.
3. The antifouling coated fabric according to any one of 2. and 2.