Turquoise blue dyeing process of cellulose fiber

A cellulose fiber and process technology, which is applied in the field of dyeing cellulose fibers with reactive dyes, can solve the problems of increasing color pattern, color point, color stain, poor solubility and permeability of dyes, etc., so as to reduce the color pattern and avoid The effect of hydrolysis

Inactive Publication Date: 2015-09-16
ZHEJIANG JINGGUANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dyeing effect of this dyeing process fluctuates greatly, and it is easy to cause color spots and stains due to salting out and foam. In addition, due to the special structure

Method used

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  • Turquoise blue dyeing process of cellulose fiber
  • Turquoise blue dyeing process of cellulose fiber
  • Turquoise blue dyeing process of cellulose fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The fabric to be dyed used in this embodiment is rayon 250kg, and the dyeing equipment used is a normal temperature and pressure overflow dyeing machine; the dyeing bath ratio is 1:8;

[0040] Specific steps are as follows:

[0041] (1) Pretreatment: Add the fabric to be dyed into a water bath, then add scouring agent SL-101 (concentration: 2g / L), raise the temperature to 90°C and keep it warm for 30 minutes, let off the foot water after cooling down, and wait for dyeing.

[0042] (2) Dyeing with 21# emerald blue as the main color and 198# bright blue as the auxiliary color, the process is as follows:

[0043] (2.1) Adding sodium sulfate and additives: inject all the sodium sulfate (final concentration in the dye solution: 60g / L) used in this vat into the dyeing vat at room temperature, and the feeding speed is based on not blocking the material pump , and then quickly inject the turquoise blue leveling agent SL-202 (final concentration in the dye solution is 10g / L) in...

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Abstract

The invention discloses a turquoise blue dyeing process of cellulose fiber. The dyeing process comprises pretreatment of cellulose fiber, wherein during the pretreatment, a foamless pretreatment aid or a low-foam pretreatment aid is used instead of a silicon-containing defoaming agent. During dyeing, all anhydrous sodium sulfate and a special turquoise blue leveling agent are completely added at normal temperature, and then a dye is added, so as to avoid salting-out caused by the significant reduction in the solubility of the dye in the case that electrolyte concentration is too high. In addition, a color matching component is firstly melted and uniformly stirred with 21# turquoise blue hot water, the mixture is cooled to 50 DEG C and then another color matching dye is uniformly stirred and added into a jar, so as to fully guarantee the sufficient dissolution of turquoise blue and to avoid the hydrolysis of a reactive dye caused by excessively high temperature. The mixture is heated up to 85 DEG C, is subjected to heat preservation for 20min, and is cooled to 80 DEG C. By virtue of dyeing at 85 DEG C, the solubility and leveling property of the reactive dye as well as the migration property of the turquoise blue dye can be greatly improved, and the dyeing property of the turquoise blue dye can be greatly enhanced.

Description

technical field [0001] The invention relates to a dyeing method in the printing and dyeing industry, in particular to a method for dyeing cellulose fibers with reactive dyes. Background technique [0002] Cellulose fiber is an important class of textile raw materials, which can be divided into natural cellulose fiber and regenerated cellulose fiber. Natural cellulose fibers are mainly cotton, as well as ramie, flax, jute and bamboo fibers. Regenerated cellulose fibers include viscose fibers, Lyocel (Tencel) fibers and Modal (Modal) fibers. Cellulose fibers have the advantages of moisture absorption, breathability, and comfortable wearing, and are especially suitable for making clothing fabrics. By blending cellulose fibers with other fibers, many fabrics with different styles and unique properties can be obtained. [0003] Early cellulose fiber dyeing mainly used direct dyes, vat dyes, sulfur dyes and basic dyes. After the advent of reactive dyes, they have been widely we...

Claims

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Application Information

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IPC IPC(8): D06P3/66D06P1/38D06P1/44D06P1/673
Inventor 王国林王予清
Owner ZHEJIANG JINGGUANG IND
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