SU870531A1 - Composition and method for dyeing textiles of polyacrylonitrile fibres - Google Patents

Description

The invention relates to the field of dyeing and finishing production, namely, to the composition and method of dyeing textile material from polyacryl, these are three loose fibers.

Known composition for dyeing textile material from polyacrylonitrile fibers based on 1.01 .3 g / l acid dye, 0.25 g / l metallic copper, 0.91 .4 g / l sulfuric acid, 1.4-1.8 g / l copper sulfate, 3.0-5.0 g / l of reducing agents, and the rest (up to 1 l) of water Tl.

There is also known a method of dyeing textile material from pb-acrylonitrile fibers using the above composition, which consists in dyeing bath. copper is heated to, copper sulfate is introduced, slowly heated to 95-100 ° C, and the material is colored — at this temperature for 1-1.5 hours, followed by washing, soaping, and final washing with D-

The disadvantage of this composition and method is the insufficient selectability of the dye fiber.

The purpose of the invention is to increase the selectability of the dye fiber.

This goal is achieved due to the fact that the known composition for dyeing textile material from

polyacrylonitrile fibers additionally contain hydrogen peroxide, with the following content of components, g / l:

Acid Dye 1,0-1,2 Metal Copper 4-5

to Hydrogen peroxide 0.03-0.04 Sulfuric acid 1.1-1.2 Water Up to 1 l

This method is carried out as follows.

ts

Hydrogen peroxide, sulfuric acid to pH 2-2.5, acid dye and metal are successively introduced into the water bath at 60-65 0.

20 copper, followed by the introduction of rial and temperature twisting up to within 10-12 minutes, keeping at this temperature for 2025 minutes and in a cooling composition of 1025 12 minutes.

The composition of the known and proposed dyes are given in table 1 (bath module 40). Select the dye 30 fiber is given in table 2.

Table 1

1,21,2 1,2

0.40.9 1.25

4,54,5 4,54,5 4,5 4,5

3,53,5 3,5

1, 21.2 1.2-1.1 1.11.1

1, 0 1.01.0

i i

0.01 0.04 0.14,

table 2

Claims (2)

Claim 1. Composition for dyeing textile material made of polyacrylonitrile fibers based on an acid dye, metallic copper, sulfuric acid and water, characterized in that, in order to increase the selectability of the dye with fiber, the composition further comprises hydrogen peroxide, with the following content of It, g / l : Acid Dye Metallic Copper 40 Hydrogen peroxide Sulfuric acid Water component 0.1-1.2 4-5 0.03-0.04 1.1-1.2 Up to 1 liter 2. The method ^ of the textile material polyacrylonitrile 45 fibers, characterized in that in a water bath at 60-65 ° C. hydrogen peroxide, sulfuric acid to a pH of 2-2.5, an acid dye and metallic copper are sequentially introduced, followed by the introduction of the material and raising the temperature to 95-100 ° C for 10-12 minutes, keeping it at this temperature for 20-25 minutes and in the cooling composition _ 10-12 minutes