SU1541324A1 - Method of dyeing cotton yarn with vat dyes - Google Patents

Abstract

The invention relates to chemical technology, specifically to the technology of dyeing and finishing production, and can be used for dyeing cotton yarn in bobbins with different winding density by vat dyes on batch dummies. The invention allows to increase the degree of fixation of the dye to 46.56-78.14%, the color fastness to wet friction to 4-5 points and to reduce the variation of the color to 1.10-2.15 Units. due to the fact that after washing the cotton yarn is impregnated with a solution of the cubic restored dye with a concentration of 0.08-0.15 g / l followed by the introduction of a solution of the same dye with a concentration of 0.17-0.375 g / l for 40-50 into the dyebath. The mines are oxidized, soaped, washed and the final finish is carried out.

Description

The invention relates to chemical technology, more specifically to the technology of dyeing and finishing production, and can be used to dye cotton yarn in reels with different winding density by vat dyes on batch dummies.

The aim of the invention is to increase the degree of fixation of the dye, the durability of the coloration and the reduction of different shading.

Example 1. Golden yellow KX - I group of vat dyes.

Preparation of yarn: a) decoction in t.v. 0.5 g / l at 100 ° C for 30 minutes.

Yarn dyeing: a) impregnation with a solution containing, g / l: dye 0.08, hydrosulfite 1, alkali 2, at 30 ° C for 5 minutes.

b) frustration with dosed feed, containing, g / l: feed solution of dye 0.17, sodium hydrosulfite 3, alkali 6, for 40 minutes, temperature. Duration of painting is 90 minutes.

I

c) oxidation with a solution of hydrogen peroxide 0.7 g / l and acetic acid 1.4 g / l, at 40 ° C for 10 minutes.

d) rinse with hot water for 10 minutes at 80 ° Cj and wash with cold water for 10 minutes at 30 ° C.

U1

JO

with

f) final treatment with a solution of acetic acid 0.5 g / l and stearox 0.5 g / l at 40 ° C for 10 minutes.

Quality indicators for the proposed method with the dosage of the dye (I), raznoottennost (d F) 1,30 units. DE, the degree of fixation (C) 55.86%, the strength of colors to wet friction (T) 5 bal.

According to the well-known alkaline reduction method without dosing of the dye (II): DE E 1.80 units. DE C - 49.90%, T 4 points.

Example 2. Golden yellow LC - I group of dyes.

Preparing for example j.

Dyeing yarn: a) impregnation with a solution containing, g / l: dye 0.1: sodium hydrosulfite 1.5; alkali 2.5; at 40 ° C for 10 min.

b) Introduction to the dyebath of a dye solution concentration of 0.2 g / l, containing sodium hydrosulfite 4 g / l, alkali 7 g / l for 50 minutes, temperature 40 ° C. Duration of painting 100 minutes. Subsequent operations are similar to Example 1.

Qualitative indicators of color in the ways: I - DE 1.10 units - C, 53.71%; T 5 ball, II - DE E 1.60 units; C 45.81%; T 4 bal.

Example 3. Golden yellow LC - I group of dyes. Preparation for example 1.

Yarn dyeing: a) impregnation with a solution containing, g / l: dye 0.125; sodium hydrosulfite 1.0, alkali 2.0, at 40 ° C for 10 minutes.

b) Introduction to the dyebath of a solution containing, g / l: dye 0.375: sodium hydrosulfite 4.5; alkali 7.5, for 50 min. temp. typa 40 ° C. Duration of painting 100 minutes. Subsequent operations are similar to example 1.

Qualitative indicators of colorings by the methods: I -UF J, J5 units) С 61.30%; T 5 bal., II - DE 1,40 units | From 56,40%; T 4 bal.

Example 4. Golden yellow LC - I group of dyes.

Yarn preparation: decoction in the so-called. at. - 0.5 tUL at JOO ° C for 30 min.

Yarn dyeing: aj impregnation with a solution containing, g / l: dye

five

0

five

0

Q

$

-

five

0.15; sodium hydrosulfite 1.0) alkali 2.0, at 40 ° C for 1 0 min.

b) Introduction to the dyebath of a solution containing g / l: dye 0.35; sodium hydrosulfite 4.5; alkali 7.5, for 50 minutes, temperature 40 C. Duration of painting 100 minutes. Subsequent operations are similar to example 1.

Qualitative indicators of coloring by the methods: I –De 1.20 units ,, C 69.36%, T 4 points, II - 4 E 1.55; From 59.76%, T 4 points.

Example 5. II group of vat dyes - brown K.

Preparation is the same as for Group I dyes, dyeing yarn: a) impregnation with a solution containing, g / l: dye 0.08, sodium hydrosulfite 2, fines 3, at 50 ° C for 5 minutes.

b) Introduction to the dyebath of a solution containing, g / l: dye 0.17 | sodium hydrosulfite 4, alkali 5, for 40 minutes, temperature 50 ° C, duration of painting 90 minutes.

Subsequent operations are similar to example 1.

Quality indicators colors by methods: I - d E 1,85 units. From 46.56%; T 4 ball, II - & E 3.15 units; C, 44.32%; T 4 bal.

Example 6. Group II dyes - brown SC.

The preparation is similar as for vat brown K.

Dyeing yarn: a) impregnation with a solution containing, g / l: dye 0.1, sodium hydrosulfite 3, alkali 4, at 55 ° C for 10 minutes.

b) Introduction to the dyebath of a solution containing, g / l: dye 0,2; sodium hydrosulfite 5, alkali 6 for 50 minutes, temperature 55 ° С, duration of painting 110 minutes. Subsequent processing is similar to example 1.

Qualitative indicators of colorings by the methods: I - DE 3.65 units; C 48.41%; T 4 ball, II - DE Е 3.05, unit, С 43.32%, T 3 ball.

Example. Group II dyes - brown SC.

Yarn preparation: decoction in t.v. - 0.5 g / l at 100 ° C for 30 minutes.

515

Yarn dyeing: a) impregnation with a solution containing, g / l: dye 0.125; sodium hydrosulfite 2.5, alkali 3.5, at 55 ° C for J0 min.

b) Introduction to the dye bath of a solution containing, g / l: dye 0.375, sodium hydrosulfite 5.5; alkali 6.5, for 50 minutes, temperature 55 C, dyeing time J10 min. Subsequent operations are similar to example 1.

Quality indicators colors by methods: I-d. E 1,70 units. ; C 51, 32%; T 4 ball, II - D Е 3,00 units / С 49,34%, T 3 ball.

Example 8. Group II dyes - brown SC.

Preparation of yarn in example 1.

Yarn dyeing: a) impregnation with a solution containing, g / l: dye 0.15, sodium hydrosulfite 2.5, fines 3.5, at 55 ° C for 10 minutes.

b) Introduction to the dyebath of a solution containing, g / l: dye 0.35, sodium hydrosulfite 5.5, alkali 6.5 for 50 min. temperature 55 ° С, duration of dyeing 10 min. Subsequent operations are similar to example 1,

Quality indicators by the methods: I - d E 3.75 u .; From 51.31% T 4 points, II - E.E. 3.00 units | From 50.00%, T 3 points.

Example 9. Group III vat dyes - bright green C.

Preparation of yarn is the same as for the I and II groups of dyes.

Dyeing of yarn: a) impregnation with a solution containing, g / l: dye 0.08 j sodium hydrosulfite 2.5, vine 3, for 5 min, temperature 60 ° C.

b) Introduction to the dyebath of a solution containing, g / l: dye 0.17j sodium hydrosulfite 5.5; alkali 7, for 40 minutes, temperature 60 ° C, the duration of dyeing 100 minutes Subsequent operations are similar to example 1.

Qualitative indicators of colorings by the methods: I - dB .1.95 units, C 67.06%; T 4 ball, II - DE 4.45 e C 66.20%, T 2 ball.

Example 10. III group of vat dyes - bright green.

The preparation is similar as for the bright green C.

46

Dyeing yarn: a) impregnation with a solution containing, tul: dye 0.1, sodium hydrosulfite 3, alkali 4 for 10 minutes at 60 C.

b) Introduction to the dyebath of a solution containing, g / l: dye 0,2; sodium hydrosulfite 6) alkali 8, for 50 minutes at, the duration of dyeing 110 minutes. Subsequent operations are similar to example J.

Quality indicators colors by methods: I - DE E. J, 80 units;

C 69.13%; T 5 ball, II - DE «4,20 units; C, 67.10%; T 3 ball.

Example 11. III group of vat dyes - bright green.

Yarn preparation is similar as

and for all previous examples.

Yarn dyeing: a) impregnation with a solution containing, g / l: dye 0.125; sodium hydrosulfite 2.5 alkali 3.5 for 10 min at 60 ° C.

b) Introduction to the dye bath of a solution containing, g / l: 0.375) sodium hydrosulfite 6.5; alkali 8.5, for 50 min at, the duration of dyeing PO min. Subsequent operations are similar to example 1.

Qualitative indicators of colorings according to the methods: I -RE 2.00 units; C 70.05%, T 4 ball, II - D F

 4.10 u .; C 68.10%; T 3 ball.

Example 12. III group of vat dyes - bright green. Preparation of yarn is the same as for all previous examples.

Yarn dyeing: a) impregnation with a solution containing, g / l: dye 0.15, sodium hydrosulfite 2.5, alkali 3.5} for 10 minutes at 60 C. b) Introduction to the dyebath

a solution containing g / l: dye 0.35; sodium hydrosulfite 6.5; alkali 8, for 50 min at 60 ° C, the duration of dyeing BUT min. The ratio of dosages of the dye is determined by the required intensity of the colors. Subsequent operations are similar to example 1.

Qualitative indicators of colors by methods: I - AE 2,15 units;

Claims (1)

C 78.14%; T 3 ball, II - U E 4.50 units.} With 75.23%, T 2 ball. Invention Formula Method of dyeing cotton yarn by pu dyes pu7 ISA 13248 by the impregnation of the recovered core, the impregnation is carried out first with the body, oxidation, soap making, washing with a dye concentration solution and post-processing, about t -0.08-0.15 g / l for 5-10 min, followed by Shchimi dosing into the dyebath to increase the degree of fixation of the edge of the solution of the same dye concentrator, color fastness to wetting 0.17-0.375 g / l during 40 th friction and decrease the varying shade-50 min.