SU956668A1 - Composition for dyeing cotton fibers - Google Patents

Description

(54) COMPOSITION FOR PAINT COLORING

one

The invention relates to the chemical technology of fibrous materials and can be used in the edge-finishing production for dyeing cotton fibers, vat dyes.

A known composition for dyeing cotton fibers by the bottoms dyes by the suspension method using as a surfactant a hydrophilic organic base, triethanolamine ij.

However, dyeing with a known composition on cotton fabric does not result in a uniform color.

Also known is the composition for dyeing cotton yarn by vat dyes by means of a suspension-reduction method, where a mixture of anion-active preparations based on naphthalene sulfonic acid dispersant NF and the sodium salt butyl naphthalene-1-sulfonic acid wetter NOT, which contribute to the mass of the masses, which contribute to the mass of the masses, is used to improve the body stock, and contribute to the manure. 2

However, this composition also does not provide a sufficiently uniform color.

FIBER

The closest to the present invention is the composition for dyeing cotton fibers, including the bottom dye, as a surfactant - dispersant NF, preparation OC-20 based on ethylene oxide and synthetic fatty acids, precellar (product of alkylphenol), as well as a reducing agent, sodium hydroxide and water C31.

ten

But dyeing with this composition also does not give uniform dyeing of cotton fibers. .

The purpose of the invention is to increase the color smoothness.

 The goal is achieved by

15 that a mixture consisting of methyl sulphates of 2-H- (methyldiethanolamino) ethyl esters of modified and unmodified tall oil was used as a surfactant in the composition including vat dye, surfactant, reducing agent, caustic soda and water. in the ratio of 1: 0.6 (drug AR-21) with the following

25 correlation of components, wt.%:

Vat dye 0,22-4,0

A mixture of methyl sulfates 2-M- (methyldiethanolamino) 30 ethyl esters of modified and unmodified tall oil in a ratio of 1: 0.6, 50 Reducing agent 0.2 |) -0.50 Caustic soda 1.20-1.60 Water Else For preparation of the composition is recommended the use of vat dyes with the index O (for suspension dyeing). Sodium hydrosulfite, urea dioxide Yar, as well as caustic sodium are used to restore and fix the filter on the fiber. When an AR-21 preparation is introduced into the dyebath, which has affinity for cellulosic fiber and partially blocks the active fiber groups, and thereby reduces the sorption of the dye by the fiber, the dyeing process is slowed by the fibers and dyeing is more uniform. The preparation AR-21, besides Tors, has a wetting ability, which also increases the uniformity of color. The proposed composition is prepared as follows. The dye is overwritten in a small amount of water until a uniform mass is formed. The drug AR-21 is dissolved in water and mixed with a dye dispersion. Dyeing is carried out as follows. The boiled cotton material is impregnated with a preformed composition of 30 mime at 60 ° C, for which a reducing agent and alkali are added to the impregnation bath. The material is washed with running water and oxidized in a solution of hydrogen peroxide and acetic acid, then again, washed in cold and warm water and the soap is carried out in an anoactive wetting solution (TMS 0.1% by weight), followed by washing to clean wash water. The concentration of the reducing agent and the alkali is chosen depending on the nature of the bottom dye, its concentration and the modulus of the dye bath. Example 1. The dye is rubbed in a small amount of water at 40 ° C until a uniform mass is formed, then the AR-21 preparation is administered, mixed and diluted with water, then the substrate is impregnated with the composition and sodium hydrosulfite and caustic is added to the dye bath to restore the dye. sodium 32.5% in the following ratio of components, wt.%: Cube dye scarlet 2 ZhD Preparation AR-21 Sodium hydrosulfite Caustic sodium 32.5 | -a Water Remaining Examples 2-24. The composition is prepared analogously to example 1 with the ratio of components shown in the table. The quality assessment of dyed yarn is determined visually, as well as on an electronic comparator, the EKC-1 colors using the VNIIS system by measuring small color differences (& E). The quality of the painted material depending on the composition shown in the table. .

Prototype 1 According to the proposed

cubic scarlet 2 railway Preparation AR-21 Sodium hydrosulfite Caustic nairi 32.5%

Water

8.70

6.30 0.87 11.50

10.90

0.93

Table continuation

Water

GSub blue OD

Drug AR-21 Sodium Hydrosulfite Caustic Sodium 32.5% Ox

Vat blue OD Preparation AR-21 Sodium hydrosulfite Caustic soda 32.5%

Water

Vat blue od

Drug AR-21 Sodium Hydrosulfite Caustic Sodium 32.5%

Water Cubic blue OD

The drug AR-21 Dioxide yew acid Caustic sodium 32.5% Water The composition of the prototype has the following 5

Scarlet dye Dispergator NF Preparation OS-20 Prevocell EO Sodium hydrosulfite Caustic soda 32.5% Water

Table continuation

8.6

10.63 0.53

11.2 0.54

8.20

9-, 5

0.51

9.53

10.4

8.61

0.48

0.04

0.02

1.4 The remaining ratio of components, wt.%: 13-956668 Using the proposed composition as compared to the PROTOTYPE allows reducing the variation of colored yarn by 7 times and increasing the color intensity by 20% without increasing the dye concentration. of the invention. The composition of dsh dyeing cotton fibers, including vat dye, surfactant, reducing agent, caustic soda and water, characterized in that, in order to increase the color uniformity, a mixture consisting of methyl sulfonates 2-H is used as a surfactant. - (Methyldiethanolamino) -ethyl esters of modified and unmodified tALLOVO oil. In a ratio of 1: 0.6 in the following ratio of components, wt.%: After 15 minutes we are 20 seconds and: Ku with Cubic dye 0.22-4.0 O (A mixture of methyl sulfates 2- N- (Methyldiethanolamino) ethyl esters of modified and unmodified tall oil in a ratio of 1: 0.60.25-0.50 Reducing agent 0.20-0.50 Caustic soda 1.20-1.60 WaterOstalal Sources of information taken into account during examination 1. Laboratory workshop on fiber mayal technology, M., 1976, page 189. 2. Dyes for textile prolate. Handbook. M., 1971, 127. 3. Melnikov, BI, et al. Dyeing printing of textiles materials on dyes. M., 1973, 10 (prototype).

Claims (3)

Claim Composition for dyeing cotton fibers, including vat dye, surfactant, reducing agent, caustic soda and water, characterized in that, in order to increase the color evenness, a mixture consisting of 2-N- methyl sulfonates is used as a surfactant modified and unmodified tall oil (methyldiethanolamino) -ethyl esters'. in a ratio of 1: 0.6 in the following ratio of components, wt.%: in relation to 1: 0.6 0.25-0.50 10 Reducing agent 0.20-0.50 Sodium hydroxide 1.20-1.60 Water The rest * '‘ Sources information taken into account during the examination fifteen 1. Laboratory workshop on chemical technology of fibrous materials. M., 1976, p. 189. 2. Dyes for the textile industry. Directory. M., 1971, 20 sec 127. 3. Melnikov B.I. and others. Dyeing and printing of textile materials • vat dyes. M., 1973, p. 10 (prototype).