JPS58191754A - Reactive dye for cellulosic fiber - Google Patents

Abstract

NEW MATERIAL:A compound of formula I (R<1> is H, methyl; ethyl; R<2> is H, methyl, methoxy, sulfonic acid, X is H, methyl, methoxy, ethoxy; Y is H, methyl acetylamino, chlorine; X is aliphatic or aromatic residue bearing 1-2 sulfonic groups). EXAMPLE:The compound of formula II. USE:It dyes cellulosic fiber such as cotton, linen or viscose rayon and its blend fabrics thereof with synthetic fiber such as polyester yellow with high fastness to sweat, sun light and chlorine. PREPARATION:For example, the condensation reaction between a pigment of formula III and an amine of the formula: Z-H is conducted in an aqueous medium at 30-40 deg.C to give a compound of formula IV and the product is subjected to condensation reaction with a compound of formula V in an aqueous medium at 90-95 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to reactive dyes for cellulose fibers.

Specifically, the present invention relates to vinylsulfonyl-type reactive dyes for dyeing cellulosic fibers, particularly natural or regenerated cellulose fibers, in a fast and deep yellow color.

The reactive dye for cellulose fibers of the present invention has the general formula [1] (wherein R1 is hydrogen, a methyl group or an ether group, and R2 and pm are hydrogen, a methyl group, a methyl group, an acetylamino group, or 2 represents chlorine, and 2 represents a sulfonic acid group.
It contains aliphatic or aromatic amino residues with moss or moss. ) is a vinylsulfonyl-type reactive dye.

The dye coated with the forepaw general formula (13) of the present invention is, for example, the general formula [■]! (wherein, R1, X and Y have the same meanings as in the forepaw general formula [l]). The dyes shown and the amines represented by the general formula (wherein 2 has the same meaning as in the general formula (13)) were mixed in an aqueous medium at 30 to μ0
C and condensed to form the following general formula [■] (wherein, R1, z,
Y Oyobi 2 has the same meaning as in the foreleg general formula [I]. ) and the following general formula CI! /380, OH, OH, 0 days 0. It is easily produced by condensing a compound represented by H (wherein R1 and Ha have the same meanings as in the general formula [1]) in an aqueous medium at θ to wajC.

Examples of cellulose fibers that can be dyed with the reactive dye of the present invention include natural fibers such as cotton and linen, and recycled blends of cellulose fibers and synthetic fibers such as polyester fibers and polyacrylonitrile fibers. Examples include products.

In order to dye cellulose fibers using the reactive dye of the present invention, dyeing is carried out by a conventional method in the presence of an acid binder such as an inorganic alkali such as dibasic acid or sodium carbonate, or an organic base such as triethylamine. can do. For example, in the case of dyeing by dip dyeing, dyeing can be carried out by a conventional method in the presence of an inorganic salt such as common salt or mirabilite and an acid binder at a temperature of Q to 60C.

Furthermore, when dyeing by a textile printing method, dyeing can be carried out by a commonly used method, such as a method using sodium alginate, urea, a reduction inhibitor, and an acid binder. In addition, various dyeing methods used for vinylsulfonyl-type water-soluble reactive dyes, such as the padding method and the pad steam method, can be applied.

Note that the dye of the present invention has a very high dyeing rate and is advantageous in terms of waste water treatment after dyeing. On the other hand, the fastness is also very good, and the fastness to chlorine, which has become a problem in recent years, is at an amazingly high level compared to conventional yellow dyes.The fastness to sweat and sunlight, which is a problem in terms of composite fastness, is also high and yellow dyes. It has extremely high practical value.

Hereinafter, the method of the present invention will be specifically explained with reference to Examples, but the present invention is not limited to these Examples unless the gist thereof is exceeded.

Example 1 A cotton fabric izt was immersed in a dye bath prepared by dissolving 0.3 f of the dye represented by the structural formula (% formula %) in water zoom, and adding and dissolving mirabilite θf, and it took 30 minutes to reach toC. The temperature rose. Next, sodium carbonate a and rt were added and dyed with jOC for an hour, followed by washing with water, nooping, washing with water, and drying to obtain a yellow dyed product.

The degree of dyeing of this dye is very high, and the dyed product is very thick, and has very good field fastness, FT1R class (20 ppm of available chlorine, subject to J-Tech 8θ//4tK), light fastness, and sweat-fastness. The weather fastness was also good.

The dye used in this example is shown by the formula! 1 molar ratio of 3-aminobenzenesulfonic acid and 1 molar ratio of 3-aminobenzenesulfonic acid in an aqueous medium with 30~uOC, stirring for 3 hours while keeping the liquid neutral with sodium carbonate to obtain a dye of the formula 3-(β-hydroxyethyl). 1 molar proportion of sulfonylaniline sulfate 9θ in aqueous medium? j
After stirring for 70 hours while keeping the pH at ~6 with IJum, the solution was salted out with potassium chloride.

Example- Structural formula A cotton fabric was printed using the dye shown in the following procedure.

Dye ko, θ to urea to, θ
V Sodium Alginate 3. θ23-Sodium nitrobenzenesulfonate θ, jf Sodium hexametaphosphate θ, jf Sodium bicarbonate 1. O9 water
The remaining portion was 100%. That is, the printing paste having the above composition was printed on a cotton cloth, and after intermediate drying at lθC, it was steamed at 100C, followed by washing with water, soaping,
Washed with water and dried.

A deep yellow dyed product with good light fastness and wet fastness of 1 was obtained, and the chlorine fastness of this dyed product was
The effective chlorine (λθppm) was very excellent in accordance with Bogre's standard.

Note that the dye used in this example was a mixture of 1 mole of the dye shown by the formula and 7 moles of Shin-aminobenzenesulfonic acid in an aqueous medium of 30 to 50% OC for 3 hours while keeping the liquid property neutral with sodium carbonate. Stir to make a dye, then salt out with ridge-equalized potassium, which is stirred for 70 hours while keeping the pH at ~6 with sodium acetate at 90 to 9 C in an aqueous medium with the amine l molar ratio shown in the formula. I got it.

Example 3 The results of dyeing cotton cloth using the dye represented by the general formula below in the same manner as in Example 1 are shown in the table below.

Claims (1)

[Claims] (1) General formula (wherein R1 represents hydrogen, methyl group or ethyl group; R2 and R8 represent hydrogen, methyl group, methoxy group or sulfonic acid group; X represents hydrogen, methyl group, methoxy group; 2 represents an ethoxy group, Y represents hydrogen, methyl group, acetylamino group, or chlorine, 2 represents a sulfonic acid group, and 9 represents an aliphatic or aromatic amino residue having moss.) Reactive dye for textiles.