JPS63282382A - Dyeing method - 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 Field of the Invention The present invention relates to a dyeing process. More specifically, the present invention relates to a method for dyeing a polyester fiber/cellulose fiber blend (hereinafter abbreviated as T/C blend) in the presence of a compound having a specific structure (fluorescent dye).

Conventional technology When dyeing T/C blends, the polyester fiber (1) side is dyed colored with a disperse dye, and then the cellulose fiber (q) side is dyed (also colored) with a cellulose fiber dye (or in the reverse order). This is the usual method, but in recent years, many T/c mixed fabrics have been used in which only the polyester fiber side is colored and the cellulose fiber side is left undyed (white). By the way, T/C using disperse dye
In mixed dyeing, it is essential to perform post-treatments such as reduction washing, soaping, and water washing to remove undyed disperse dye after the dyeing operation is completed. There is a problem in that the decomposition of disperse dyes contaminates cellulose fibers. To solve these problems, efforts have been made to use disperse dyes that are less likely to stain cellulose fibers, or to use disperse dyes that are robust to reduction cleaning, soaping, water washing, and the like. Also, when dyeing with disperse dyes, a fluorescent dye for cellulose fibers is used in combination to make the cellulose fibers appear white.

Problems to be Solved by the Invention Methods that use disperse dyes that have low staining properties on cellulose fibers, or disperse dyes that are robust in post-treatments such as reduction cleaning, do not have a sufficient effect of leaving cellulose fibers white. The disadvantage is that fluorescent dyes for cellulose fibers do not exhibit sufficient dyeing power to cellulose fibers under high-temperature conditions such as those used in dyeing Tetoron fibers, and as a result, the effect of leaving cellulose fibers white is not sufficient. There is.

Problems to be Solved by the Invention The present inventor has conducted extensive research to solve the above-mentioned problems, and as a result has arrived at the present invention. That is, in the present invention, when dyeing only polyester fibers of a polyester fiber/cellulose fiber blend (T/C blend) with a disperse dye, the free acid is expressed as the formula (1) (in formula (1), 几, R2 are each independently a lower alkyl Anilino group which may be substituted with 1 or 2 of a group, sulfone group, sulfamoyl group, chloro atom or carboxyl group; Phenoxy group which may be substituted with a sulfone group; Substituted with a hydroxy group, sulfone group or carboxyl group an optional mono- or dialkylamino group;
Provides a T/C mixed dyeing method characterized in that dyeing is carried out in the coexistence of a compound represented by the following: phenyl-, methyl-amino group; movac holino group; lower alkoxy group; represents an amino group or a hydroxyl group. do.

The staining method of the present invention will be explained in detail.

The compound represented by formula (1) is disclosed in, for example, JP-A-51-524.
46 and the like, and these compounds can be prepared, for example, as follows.

First, 2 mol of cyanuric chloride was dissolved in acetone, and this was poured into ice water containing a surfactant to disperse it well. Then, 1 mol of 4,4-dianostilbene-2,2-disulfonic acid was added to this dispersion. Processing p) 14-9, temperature 0-3.5
Condensation (single caustic combination) at ℃ yields the following compound.

Next, the compound of formula (2) and the following formulas (3) and (4) Rl
Condensation reaction (2
A compound of formula (1) is obtained by performing a caustic combination and a three-caustic combination.

The fiber to be dyed in the method of the present invention may be a blended or interwoven product of polyester fiber and cellulose fiber such as cotton, rayon, hemp, etc., or may be a mixed fiber in the form of cloth, stockinette, etc. It may be in any form such as filamentous.

When dyeing a T/C blend by coexisting the compound in (2) (1), methods for dyeing polyester fibers with disperse dyes, such as dip dyeing method (high temperature dyeing method), carrier method, textile printing method, pad dyeing method, etc., can be applied as is. It is possible.

In the dyeing method, a dye bath consisting of a normal disperse dye, a compound of formula (1) and, if necessary, a nonionic surfactant, an anionic surfactant, and a pH adjuster is prepared, and then T/C is applied to the dye bath.
98~140℃, preferably 110~13℃
Staining is carried out for 20-90 minutes at 0°C. In this case, the bath ratio is usually 1:5 to 1:50, and the compound of formula (1) is usually 0.01 to 5%, preferably 1 to 3% (by weight) based on the cellulose fiber content of the T/C blend. ratio). After dyeing is completed, water washing, soaping, reduction washing, and water washing are carried out in a conventional manner to obtain a T/C mixed dyed product in which the cellulose fibers remain white.

In the carrier method, a dye bath is prepared from a disperse dye, a compound of formula (1), a chlorobenzene carrier, etc., and dyeing is carried out in a conventional manner at 90 to 110'C for 0.5 to 2 hours, followed by washing with water, reduction washing, and washing with water. A dyed T/C blend is obtained in which the cellulose fibers remain pure white.

Furthermore, a continuous dyeing method using a textile printing method or a pad dyeing method can also be carried out by conventional methods.

EXAMPLES Next, the present invention will be specifically explained by examples. In the examples, sulfone groups and carboxyl groups are expressed in the form of free acids, and parts are by weight.

Example 1 0.05 part of the compound represented by formula (5) and 1 part of Kayalon Polyester Black EX-8F200 (manufactured by Nippon Kayaku, disperse dye)
Dissolved in 0.00 parts of water, added 0.01 part of acetic acid, added 5 parts of polyester fiber/cotton blend (50150) to 13
The temperature was raised to 0° C., and then dyeing was carried out for 60 minutes. After finishing the dyeing, washing with water, sowing pink, reduction washing, and washing with water were carried out.

In the resulting dyed product, the polyester fiber portion was dyed pure black, while the cotton fiber portion remained pure white.

Example 2-io.

A T/C mixed dyeing was carried out in the same manner as in Example 1 using the compound (fluorescent dye) shown below to obtain a T/C mixed dyed product in which the cotton side remained pure white.

Example Rr Rz
2 -NH@ -NHO 3-o+5o3H-N < CH3)29 -NH(
γC0OH-NH()cooHlo-OCI-13-N
H2 Comparative example Kayalon polyester black EX-8F2000.5
1 part was dispersed and dissolved in 100 parts of water, 0.01 part of acetic acid was added, 5 parts of polyester/cotton blend (50150) was added, the temperature was raised to 130°C, and then dyed for 60 minutes. After the dyeing was completed, washed with water, So pink, after reduction cleaning, washing with water and drying.

In the obtained dyed product, the cotton fiber portion was discolored to a yellowish tinge.

Example 11. Dyeing (carrier method) 0.05 part of a compound expressed by the formula and 1 part of Kayalon Polyester Black EX-8F200 (Nippon Kayakusaki, disperse dye)
Dissolved in 0.00 parts of water, 0.01 part of acetic acid and carrier agent (
Add 0.5 parts of Nikka Kagaku Setsu, Tetrosin K) and 5 parts of polyester/rayon mixed fabric (50150) to make 10
The temperature was raised to 0°C and dyeing was carried out for 60 minutes. After dyeing, it was washed with water, soaped, reduced, washed with water, and dried.

The resulting dyed product had remarkable white discoloration on the rayon side.

Example 12. Compound expressed by printing method 0.1 part Kayalon Polyester Black EX-8F 200 5
Part glue PBL-600 (Adachi paste)
60 parts Sodium chlorate
0.5 parts Tartaric acid 0.2 parts Implebar 880 (manufactured by Yokohama Polymer) 2 parts lukewarm water 32.2 parts Total 100 parts The above color paste was printed on a polyester/cotton woven product using a screen, intermediate drying was performed, and then Heat treatment was performed at 170° C. for 7 minutes.

Washing with water, soaping, reduction washing, washing with water, and drying.

The resulting dyed product had significant white discoloration on the cotton side.

Example 13. Compound expressed by continuous dyeing method 0.1 part Kayalon Polyester Black EX-8F200 5
Sodium alginate
0.1 part lukewarm water 94.8 parts Total 100 parts Pad the above padding solution onto a polyester/cotton woven product and heat at 100°C.
Intermediate drying was performed for 3 minutes, followed by heat treatment at 200° C. for 90 seconds, washing with water, soaping, reduction washing, washing with water, and drying.

The resulting dyed product had remarkable white discoloration on the cotton side.

Example 14 30 parts of bulk powder of Kayalon Polyester Black EX-8F and 2 parts of the compound represented by the following formula were mixed with 40 parts of Demol N (manufactured by Kao Corporation, dispersant) and 28 parts of Demol C (manufactured by Kao Corporation, dispersant). The mixture was subjected to micronization treatment for 5 hours in a wet state, and then dried to obtain a micronized product. 10 parts of this fine particle mixture
Dissolve 0 parts in water, add 0.01 part of acetic acid, and add 5 parts of polyester/cotton blend (50150) to make 130 parts.
The temperature was raised to ℃ and then dyed for 60 minutes.After dyeing, washing with water,
After soaping and reduction cleaning, it was washed with water.

The dyeing of the polyester/cotton blend was changed, leaving the cotton side pure white.

Effects of the Invention In dyeing T/C blends, a dyeing method has been established that leaves cellulose fibers white and dyes only polyester fibers colored, with an excellent white leaving effect.

Claims (1)

[Claims] 1. When dyeing only polyester fibers of polyester fiber/cellulose fiber blend (T/C blend) with disperse dye, there are formula (1) ▲ mathematical formula, chemical formula, table, etc. ▼ (1 ) (In formula (1), R_1 and R_2 are each independently an anilino group which may be substituted with 1 or 2 of a lower alkyl group, a sulfone group, a sulfamoyl group, a chloro atom or a carboxyl group; a phenoxy group which may be substituted with a hydroxy group, a sulfone group or a carboxyl group; a phenyl-, methyl-amino group; a morpholino group; a lower alkoxy group; an amino group or a hydroxyl group) A T/C mixed staining method characterized by staining in the coexistence of the indicated compound