JPS63243388A - Method for dyeing polyester raised fiber material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a method for dyeing polyester brushed fiber materials.

More specifically, the present invention relates to a method for dyeing and processing a 1-meter brushed polyester material with flatness and waxiness.

Conventionally, when dyeing polyester fiber materials with disperse dyes, hydrosulfide, alkaline agents such as caustic soda, and surfactants were used to remove unfixed dyes adhering to the surface of AA pongee after dyeing with disperse dyes. A reduction cleaning treatment is performed using a dye, followed by heat setting to remove wrinkles that occurred during dyeing and to stabilize the shape.

However, when the above-described dyeing method is applied to polyester brushed fiber materials, there are problems in that the fastness of the final product, especially the light fastness, is reduced, and there are many colors due to gases in the air.

In other words, the final product obtained by dyeing a polyester brushed fiber material with a disperse dye, then performing a conventional reduction cleaning treatment and then heat setting changes its hue and has poor light fastness even when exposed to indoor light. There were problems such as lowering the energy consumption, or receiving an unexpectedly large shadow due to gas in the air.

The present inventors have arrived at the present invention as a result of intensive research into dyeing polyester brushed fiber materials in order to obtain a dyed product that has been subjected to final processing including reduction washing treatment and has excellent light fastness and is free from gas fading. This is what I did.

That is, the present invention provides a method for dyeing a polyester brushed fiber material, which is characterized by dyeing the polyester brushed LA fiber material using a disperse dye, subjecting the dyed product to a reduction washing treatment, and then treating it in an acidic aqueous bath. .

The disperse dye used to dye the polyester brushed fiber material in the method of the present invention is not particularly limited, and any conventionally used disperse dye may be used. This is particularly effective when an anthraquinone disperse dye having a hydroxyl group in the core is used.

Such disperse dyes include, for example, C, I Disbird's Blue 27C, I Disbird's Blue 54C, I Disbird's Blue 56C, I Disbird's Blue 62C, I
Disbirds Blue 78C,I Disbirds Blue 81C,I Disbirds Blue 1
58C,I Disbirds Blue 185C,I
Disbirds Blue 197C, I Disbirds Red 60C, I Disbirds Left 1
27C,I Disbirds Red 91C,I Disbirds Violet 28C,I
Examples include Disbird's Violet 57.

Dyeing of polyester brushed fiber materials using these disperse dyes can be carried out by conventionally known methods such as carrier dyeing, high temperature dyeing, and textile printing.

The dyed product thus obtained is subjected to a reduction washing treatment according to a known method and then treated in an acid bath.

Acidic substances that can be used to prepare acidic baths include:
Examples include organic acids such as acetic acid, formic acid, oxalic acid, and tartaric acid, and inorganic acids such as hydrochloric acid, sulfuric acid, and phosphoric acid, but organic acids such as acetic acid and formic acid are particularly preferred.

0.5~ail/l, 0.2~ for inorganic acids! &/l.

Acid bath treatment is sufficient at room temperature, but can be carried out under heating to enhance the effect.

The maximum temperature during heating is approximately 80° C. from an industrial standpoint. Processing time depends on temperature etc. but usually 10
~20 minutes.

The acid bath-treated dyed product can then be heat-set according to known methods.

A more specific example of implementing the method of the present invention will be described below.

In carrying out the present invention, first, a polyester brushed #l fiber material is immersed in a dyeing bath containing a disperse dye, and after adding a pH adjuster, a dispersion leveling agent, etc. as necessary, 10 minutes under pressure.
Dyeing is carried out at a temperature of 5°C or higher, preferably 110-140°C.

Dyeing can also be carried out in the presence of a carrier such as 0-phenylphenol or methylnaphthalene at a relatively high temperature, for example in the boiling state of water.

Furthermore, it is also possible to use a dyeing method in which a dye dispersion is padded onto a polyester nap fiber material and then subjected to steaming or dry heat treatment at 100° C. or higher.

On the other hand, in the case of textile printing, the dye dispersion is kneaded with a suitable sizing agent, and after printing this on the polyester brushed fiber material,
Perform steaming or dry heat treatment.

The dyed product thus obtained is treated with a reducing agent such as hydrosulfide 0.5 to 87/l or thiourea dioxide 0.2 to 2.09/l, or an alkaline agent such as caustic soda 0.5 to 2'l. /l or soda carbonate 0.5-
89/l and cleaning aid 1, for example an amphoteric surfactant 0.
6 to 2971 and treated at 70 to 90°C for 15 to 20 minutes, washed with water, and then treated in an acidic bath containing acetic acid or formic acid for about 20 minutes at room temperature to 80°C, Then, it is washed with water and dried. The dried dyed product can be finished by heat setting at 150° C. or higher for 20 seconds or longer.

When dyeing, benzotriazole-based ultraviolet absorbers dispersed in water are used as light fastness improvers, such as Sumipon UL (
(manufactured by Sumitomo Chemical Co., Ltd.) in an amount of 2 to 8%.

Further, prior to the drying process, a bath containing a softener or a melamine resin and/or a flame retardant may be padded.

According to the method of the present invention, in the dyeing process of polyester brushed fiber materials, not only is the light fastness significantly improved, but also the gas fading fastness caused by the dyeing process is also significantly improved.

The present invention will be explained in more detail by examples below.
The present invention is not limited to these examples.

Example 1 Sumikalon Yellow E-4GL (disperse dye manufactured by Sumitomo Chemical Co., Ltd.) 0.1X (weight % based on the dyed object, the same applies hereinafter), Sumikalon Brilliant Pink 5E-RL (disperse dye manufactured by Sumitomo Chemical Co., Ltd.) 0.185X, and 0°25% blue disperse dye represented by the following formula (1) (prepared by atomizing and drying a mixture of 80% dye and 70 Prepare a dye bath of 1000 dye dispersion containing 0.5y/A', and adjust the pH of the dye bath with acetic acid and sodium acetate.
Adjust to 5.

Pour 10 (l) of polyester brushed fiber into the dye bath and heat at 70°C.
The temperature was raised at a rate of 1°C every minute from 180°C to 60°C.
Stain for minutes, caustic soda 1 P/l, hydrosulfide 2 P/l.

Light cleaning is performed at 80° C. for 20 minutes in a bath containing 2 mt/1 of Laccor AL (manufactured by Kaisei Kagaku Co., Ltd.), and then thoroughly washed with warm water. Then, it is treated in a bath of glacial acetic acid 22171 at 60° C. for 15 minutes, washed with water, and dried. Further heat set at 170°C for 8 minutes to finish.

Comparative Example 1 Dyeing was carried out in the same manner as in Example 1, followed by reduction cleaning, hot water washing, and finishing by heat setting without glacial acetic acid treatment.

The light fastness of the dyed products obtained in Example-1 and Comparative Example-1 was measured using a fade meter (black panel temperature: 68°C).
) for 10 hours and judged on the gray scale for discoloration and fading.

As shown in Table 1, the light fastness was extremely poor in those not subjected to acid bath treatment, whereas in the example
The light fastness of the dyed product finished according to Example 1 was significantly better.

Table 1 Example-2 Dianics Yellow 5GL (disperse dye manufactured by Mitsubishi Chemical Corporation) 0.15% Paranyl Brilliant Pink
A mixture of 0.2% RE L (B, A, SF disperse dye) and 0.1X blue disperse dye represented by the following formula (2) (dye 80,96' and 70% anionic activator) was atomized. (prepared by drying) Furthermore, a dye bath of 1000-ml dye dispersion containing 0.5 P/A' of Sumipon TF (dispersion and leveling dye manufactured by Sumitomo Chemical Co., Ltd.) as a dispersant was prepared, and the same procedure as in Example-1 was made. Finish by reduction cleaning, acid bath treatment and heat setting.

Comparative Example 2 Dyeing was carried out in the same manner as in Example 2, followed by reduction cleaning, hot water washing, and finishing by heat setting without glacial acetic acid treatment.

The dyed products obtained in Example-2 and Comparative Example-2 were tested in the same manner as in Example-1. Furthermore, the father color test using sulfur dioxide gas was conducted in accordance with JISLO858, Dye fastness test method for sulfur dioxide gas bleaching.

As shown in Table 2, those that were not subjected to acid bath treatment had extremely poor light fastness and were also extremely poor in discoloration due to sulfur dioxide gas. On the other hand, the light fastness and sulfur dioxide gas discoloration of the dyed product finished according to Example 2 were extremely good.

Table 2 Example-8 Sumikalon UL Yellow GF (0.2% disperse dye manufactured by Sumima Kagaku Co., Ltd. and red disperse dye 340 expressed by the following formula (8).
１
1 containing 0.55 i'/l of F (dispersion and leveling dye manufactured by Suminen Kagaku Co., Ltd.) and 2% of Sumipon UL (light fastness improver manufactured by Suminum Chemical Co., Ltd.)
A dye bath of 0001 nl of dye dispersion is prepared and the pH is adjusted to 5 with acetic acid and sodium acetate.

Pour the polyester brushed fabric 1002 into the dye bath and heat it to 70°C.
From then on, the temperature was raised at a rate of 1°C every minute, dyeing was carried out at 180°C for 80 minutes, and reduction washing was performed in the same manner as in Example-1. Then, it is treated in a bath of 2 g/l of formic acid at 40° C. for 16 minutes, washed with water, and dried. Further heat setting is performed at 170°C for 2 minutes to finish.

Comparative Example 8 Dyeing and reduction cleaning were carried out in the same manner as in Example 8, and finishing was done by heat setting without formic acid treatment.

The light fastness and sulfur dioxide gas discoloration of the dyed products obtained in Example-8 and Comparative Example-8 were tested in the same manner as in Example-2.

As shown in Table 8, the dyed products treated with acid bath and heat set had extremely good light fastness and fastness to sulfur dioxide compared to those heat set without acid treatment.

Table 8 Example-4 Sumikalon UL Yellow GF (disperse dye manufactured by Sumima Kagaku Co., Ltd.) 0.2% was used in Example-8, and 0.8% of the red disperse dye of formula (8) was used as shown in formula (4) below. Blue disperse dye 0.5% (adjusted by atomizing a mixture consisting of 80% dye and 70% anionic activator and drying) In addition, 0.5% of Sumipon TF (dispersing and leveling dye manufactured by Sumima Kagaku Co., Ltd.) as a dispersant. A dye bath of 1000- dye dispersion containing fM'/A' is prepared and finished by reduction washing, acid treatment, and heat setting in the same manner as in Example-1.

Comparative Example 4 Dyeing was carried out in the same manner as in Example 4, followed by reduction cleaning, hot water washing, and finishing by heat setting without acid treatment.

The light fastness and sulfur dioxide gas discoloration of the dyed products obtained in Example-4 and Comparative Example-4 were tested in the same manner as in Example-2.

As shown in Table 4, the light fastness and sulfur dioxide gas discoloration of the dyed products of Example 4 were extremely superior to those of dyed products finished without acid bath treatment.

Table 4

Claims (1)

[Claims] Polyester brushed fiber material is dyed using disperse dye,
1. A method for dyeing polyester brushed fiber materials, characterized in that the dyed material is subjected to a reduction washing treatment and then treated in an acidic aqueous bath.