JPS59192788A - Fast dyeing of diacetate fiber - 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 diacetate fibers with good fastness.

Traditionally, cyclodiacetate fibers are dyed using dyes that are less hydrophobic and have lower sublimation fastness than dyes for JIJ ester fibers, which are usually used for cycloacetate fibers, or when vivid colors are required. Although cationic dyes were used for dyeing, the color fastness of the dyes was not necessarily sufficient, and there were problems in applying it to fields that required high color fastness.0 Reasons for poor color fastness Dyeing methods using disperse dyes have been investigated to improve this problem due to the structure of the dye. Although it has been found that the dyeing temperature is 100°C or lower, sufficient color development and color fastness cannot be obtained even if dyeing with a highly hydrophobic dye is used.
10 to obtain sufficient color development and high fastness with these dyes.
There are cases where the fastness of some dyes improves when dyeing at high temperatures above 0°C, and in the case of diacetate/polyester blends, there are examples where polyester is dyed at the same time, but acetate The drawback is that the fiber properties are easily lost. This method diacetate fiber 1
When dyeing is applied to a material with a high mixing ratio of diacetate fibers or diacetate fibers at high temperatures, the crimps become loose and the fabric wrinkles become large, resulting in a significant deterioration of the fabric properties.

In addition, in the case of blended materials, some fibers may cause problems such as yellowing or deterioration of yarn properties due to high temperatures, and the fibers that can be blended are limited.

In order to improve these problems, the present inventors have conducted intensive research to establish a dyeing method that provides sufficient dyeing of all diacetate fibers and high fastness, and as a result, they have arrived at the present invention. be.

That is, the gist of the present invention is that when dyeing diacetate fibers with disperse dyes or cationic dyes, one or more glycol ether compounds represented by the following general formula are used in a total dye bath K 0.1 to 3. Add 0fii%,
A fast dyeing method for diacetate fibers characterized by dyeing.

The present invention aims to obtain sufficient dyeing and high fastness of diacetate fibers by adding a specific glycol ether compound to the dye bath.

The diacetate fiber used in carrying out the present invention is a fiber made of cellulose acetate with an acetylation degree of about 55, and its mixtures include polyester fibers, polyamide fibers, polyacrylic fibers, etc. Synthetic fibers, blends containing 5 to 95% by weight of natural fibers such as cotton, wool, and silk, knitting, interweaving, intertwisting, etc.

The compound added to the dyeing bath used in the present invention is a glycol ether compound represented by the following general formula.

In addition, compounds with n-5 or more have poor fast dyeing effect,
Further, a compound where n=0 has poor water solubility and is not preferred as a compound to be added to a dye bath.

The glycol ether compound used in the present invention not only has the effect of significantly improving fastness, but also has a deep dyeing effect, so it is possible to dye diacetate fibers at a temperature lower than the temperature at which the original color development is achieved. Therefore, it exhibits the effect of improving crimping during dyeing and wrinkles of the fabric. The usability of the compound in the dye bath varies depending on the dyeing temperature, time, mixing ratio of diacetate fibers, etc.
It is preferable to add 3.0 to 30% sodium chloride. Addition of less than 0.1% by weight has little effect on improving fastness, and addition of 3.0wt% accrual not only does not significantly increase the fastness dyeing effect, but also causes problems such as increased cost, tarring, and carrier spots. occurs.

More preferably, a compound with n=2 to 4 (2 to 4 moles of ethylene oxide group) is used for a glycol needle compound represented by the general formula σ with n=1 (1 mole of ethylene oxide group bonded). When a mixture is used in a proportion of 50 to 100% by weight, an excellent deep dyeing effect can be obtained.

The disperse dye used in carrying out the present invention can be freely selected from conventionally used dyes, and dyeing aids can be those conventionally used, as well as inorganic salts. For example, sodium sulfate, sodium chloride, etc. can also be used in combination. Note that the disperse dye that has a large effect of improving fastness in the present invention is preferably a hydrophobic disperse dye that is often used for polyester fibers, but is not necessarily limited thereto. Furthermore, compared to disperse dyes, diacetate fibers have the effect of improving fastness even to cationic dyes, which have poor fastness, and it is also desirable to use cationic dyes for vivid colors. Further, the treatment after dyeing of the present invention may be carried out by conventional methods such as reduction washing soaping and drying.

The present invention will be explained below using examples. In addition, the evaluation methods in the examples were performed by the following methods.

L value: (JE 1976 uniform space) It is the brightness determined by the following formula, and the smaller the value, the darker the color.

L=116 (Y/YO)! '-16 However, Y is the tristimulus value, and YO is the Y value of the standard white board.

Light fastness: JIS L-0842-1971 Washing fastness: JIS L-0844-1973 (No. A-2)
Rubbing fastness: JIS L-0849-1971 Level dyeing property: Judgment by naked eye Example-1 Carotene (Diacetate fiber manufactured by Mitsubishi Acetate Co., Ltd.) 20
1 cq of the 0d/30f processed yarn was wound up into a straight dyeing dyeing dyeing yarn using a cheese wine goo, and then refined in a conventional manner and used as a sample.

This was dyed using a cheese dyeing machine under the dyeing conditions shown in Table 1.

Table 1: Dianic Sprue BG-FS (dispersed dye manufactured by Mitsubishi Chemical Industries, Ltd.) 2% owf as a dye; Nikka Sansol (dispersed agent manufactured by Nicca Chemical) 7000 (dispersed agent manufactured by Nicca Chemical) 0
．． 5 jii-/l, acetic acid 0-5 Cr1t k
A b-containing dye solution was used in each condition.

The staining time was 60 minutes under each condition.

Cheese dyed under the above dyeing conditions is reduced and washed using a conventional method.
After softening treatment and drying, the entire knitted fabric was prepared using a nonker knitting machine, and the color measurement and color fastness were measured, and the results are shown in Table 2.

Items that use all non-inventive carriers as shown in Table 2 onwards are I.
3 (Dyeed to the same color as high temperature dyeing at 1℃, darker color compared to those using conventional carrier 'ff:iL', and fastness without sagging on rolling. The same cheese used in Example 1 was used as a sample. This was dyed using a full cheese dyeing machine under the dyeing conditions shown in Table 3 and planned.

In addition, Terra Seal Black 2GL (dispersed dye manufactured by Ciba Geigy Co., Ltd.) was used as a dye at 10% OWF, and as a dye auxiliary agent Nisoka Sansalt 7000 (dispersed agent manufactured by Nicca Chemical Co., Ltd.) was used at 0.5% OWF. /-lt, acetic acid o, scxy
All dyes containing t were used in each condition.

Further, the staining time was 60 minutes under each condition.

The products according to the present invention were dyed in a deep color and had no problems in level dyeing, but the products that deviated from the conditions of the present invention did not give good results.

The same cheese used in Example-1 was used as a sample. This was dyed using a cheese dyeing machine under the dyeing conditions shown in Table 4 and evaluated.

4th Clothing: 2% diacrylic blue H2R-N (disperse dye manufactured by Mitsubishi Chemical Industries, Ltd.) as a dye, and 4% Emar O (surfactant manufactured by Kako Atlas Co., Ltd.) as a dyeing aid.
A dye solution containing owf''1 acetic acid 0.5 Cf-11'C was used under each condition.The staining time was 60 minutes under each condition.

The cheese dyed under the above dyeing conditions was soaped with Emuldan 909 (a surfactant manufactured by Kako Atlas Co., Ltd.) at 1 f/l, softened, dried, and then knitted fabric was prepared using a sinker knitting machine to measure color and color fastness. The results are shown in Table 5.

As shown in Table 5 and above, using the compounds of the present invention, high-quality products with high fastness and no crimping were obtained.

Claims (1)

[Claims] (+,) When dyeing diacetate fibers with disperse dyes and/or cationic dyes, p1 one or more glycol ether compounds represented by the following general formula are added to the dye bath at 0.00%. A fast dyeing method for diacetate fibers, characterized by dyeing by adding 1 to 3.0% by weight. (2) A mixture of glycol ether compounds in which n=2 to 4 compounds are present in a proportion of 50 to 100% by weight relative to n=1 compound is added to the whole dye bath according to claim 1. Fast dyeing method for diacetate fibers.