A kind of dyeing process of reactive dyes with deep color of real silk

A reactive dye and thick color technology, which is applied in the field of reactive dye dyeing technology, can solve the problems of lower dye utilization rate, damaged dye, silk gray damage, etc., and achieve the effect of high utilization rate, various types, and reduced burden

Active Publication Date: 2015-09-16
JIANGSU GOLDSUN TEXTILE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has been further improved on the basis of the original silk reactive dyeing, but the disadvantage is that when the color is fixed under alkaline conditions, a part of it is in the dyeing process and on the silk fiber—NH 3+ Dyes bound by ionic bonds, because -NH 3+ Loss of protons under alkaline conditions - NH 2 , the ionic bond is broken, the dye is dissolved in the dye bath, destroying the dyed dye, resulting in a decrease in the utilization rate of the dye
In addition, the addition of alkali agent at 60°C also has the risk of graying silk

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Silk Crepe

[0018] (1) Exhaust dyeing: put the fabric into the dye solution of reactive red 3BS (Taiwan Yongguang Chemical Industry Co., Ltd.) accounting for 5% of the fabric weight. The bath ratio is 1:40. Mingfen 10g / L, dye at 85°C for 60 minutes, then adjust the pH of the dye solution to 5 with glacial acetic acid, dye for another 20 minutes, drain the liquid, and rinse the fabric with running water.

[0019] Under high temperature conditions, the fiber swells, and the dye can fully dye the silk and at the same time fully diffuse into the fiber. Under the dyeing promotion of neutral electrolyte, the exhaustion rate is high and the dyeing is even. Under acidic conditions, the —NH in silk 2 Generate—NH 3 + , and the anions of reactive dyes produce Coulomb attraction, which is conducive to the dyeing of silk fibers and further improves the dyeing rate. In the dyeing process, part of the reactive dye reactive groups can be combined with -NH in silk 2 form a covalen...

Embodiment 2

[0028] Silk Crepe

[0029] (1) Jig dyeing:

[0030] Fabric is put into the dye liquor that accounts for fabric weight 6% reactive red DS-3B (Wujiang Taoyuan Jinsheng chemical factory) and 1% reactive scarlet BF-2GF (Wujiang Taoyuan Jinsheng chemical factory), bath ratio is 1: 3. When the temperature of the dyeing liquid rises to 90°C, add 21g / L of sodium sulfate, keep at 90°C for 150 minutes, then adjust the pH of the dyeing liquid to 6 with glacial acetic acid, and then dye for 30 minutes, drain the liquid, and rinse the fabric with running water.

[0031] (2) Instantaneous padding: Padding the dyed fabric, first rolling off the moisture on the fabric, the excess rate is 60%, then immersing the fabric in the working fluid and rolling it out, the excess rate is 80%, and the roll rate is 80%. Install and stack for 15 hours. In the working fluid, the alkali agent is 3g / L of soda ash, 2g / L of caustic soda, and the speed of the pressing roller is 30m / min.

[0032] (3) Water wash...

Embodiment 3

[0038] Silk Crepe

[0039] (1) Jig dyeing:

[0040] Fabric is put into the dye liquor that accounts for fabric weight 5% reactive red DS-3B (Wujiang Taoyuan Jinsheng chemical factory) and 5% reactive scarlet BF-2GF (Wujiang Taoyuan Jinsheng chemical factory), bath ratio is 1: 2. When the temperature of the dyeing solution rises to 98°C, add 30g / L sodium sulfate, keep at 98°C for 180 minutes, then use glacial acetic acid to adjust the pH of the dyeing solution to 7, then dye for 40 minutes, drain the liquid, and rinse the fabric with running water.

[0041](2) Instantaneous padding: Padding the dyed fabric, first rolling off the moisture on the fabric, the excess rate is 70%, then immersing the fabric in the working fluid and rolling it out, the excess rate is 90%, and the roll rate is 90%. Install and stack for 20 hours. In the working fluid, the alkali agent is 20g / L of soda ash, 10g / L of caustic soda, 20g / L of sodium sulfate, and the speed of the pressing roller is 40m / min....

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Abstract

The invention provides a technology for dyeing real silks with a deep color through a reactive dye. The technology comprises three steps of putting a fabric into dyeing liquor prepared from the reactive dye, heating the dyeing liquor to be 85-98 DEG C, adding anhydrous sodium sulphate into the dyeing liquor, dyeing at the temperature of 85-98 DEG C for 60-180 minutes, adjusting the pH of the dyeing liquor to be 5-7, continuously dyeing the fabric for 20-40 minutes, discharging the liquor, and washing the fabric through clean running water; padding the dyed fabric to remove water from the fabric at the liquor retention rate of 50-70 percent, then immersing the fabric into working liquor for rolling out and winding at the liquor retention rate of 70-90 percent, and winding and stacking the fabric for 8-20 hours, wherein the speed of pressing rollers is 20-40 m / min, and the working liquor comprises an alkaline agent with the concentration of 5-30 g / L and the anhydrous sodium sulphate with the concentration of 0-20 g / L; finally performing jig dyeing on the padded fabric, washing the fabric through the clean running water, then washing the fabric through warm water, and washing the fabric through hot water at last. According to the technology, the reactive dye cannot be limited by the solubility and alkaline resistance of the reactive dye, and the utilization rate of the dye is greatly increased.

Description

technical field [0001] The invention relates to the field of dyeing and finishing of textiles, in particular to a dyeing process of reactive dyes with dark and thick colors for real silk. Background technique [0002] Silk has been dyed with acid and direct dyes for a long time, but the color fastness of these dyes has been difficult to reach a high level, whether it is the light fastness of light colors or the perspiration fastness of dark colors, it is difficult to meet the growing demand of consumers. higher demand. As a high-end product, the color fastness is not good, which causes a fly in the ointment in real silk products, and even affects the clothing performance of real silk products in severe cases. [0003] Although reactive dyes are also used in real silk, they cannot be popularized because of the low color fixation rate and the non-alkali resistance of real silk. Commonly used methods include jigger dyeing and exhaust dyeing. The techniques adopted include wea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/10D06P1/38D06P1/673D06B3/18D06B3/10
Inventor 张彦陈红霞陆鹏丁可敬
Owner JIANGSU GOLDSUN TEXTILE SCI & TECH
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