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Dyeing process for viscose/brocade blended silks by active/acid dye-bath method

A technology of acid dyes and reactive dyes, applied in the field of dyeing, can solve the problems of long process, high energy consumption, difficult textile dyeing and processing, etc., and achieve the effect of high dyeing rate, soaping fastness, and good homochromaticity.

Inactive Publication Date: 2014-12-24
WUXI DONGXIN WEAVING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Generally, there are few studies on the dyeing of viscose / nylon blended yarns, mainly the research on cotton / nylon blended fabrics. The traditional cotton / nylon fabric dyeing method adopts two-bath dyeing methods such as disperse / reactive, disperse / direct, and acid / reactive. The process is lengthy and consumes a lot of energy, which brings certain difficulties to the dyeing and processing of this kind of textiles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of viscose / brocade blended thread reactive / acid dye one-bath dyeing process is characterized in that:

[0041] The prescription is: reactive red EF-6B reactive dye 1.8% (o.w.f.), Pula red B125% acid dye 1.8% (o.w.f.), soda ash 18g / l, sodium sulfate 1.8g / l, color fixing agent 2.8g / l And acetic acid / sodium acetate is used as a buffer solution; the bath ratio is 45:1,

[0042]The process flow is: prepare a dyeing bath (reactive dyes, acid dyes, sodium sulfate), dye the viscose-cotton blended yarn at 35°C, add alkali after dyeing at a constant temperature for 30 minutes, continue to keep the temperature at a constant temperature for 30 minutes to fix the color of the reactive dyes, and then use acetic acid / Sodium acetate buffer solution to adjust the pH value to 5.5, slowly raise the temperature (2°C / min) to boil, boil for 15 minutes, then cool down to 75°C, add color fixing agent to fix the color for 15 minutes, wash with water, soap, post-treatment, complete the w...

Embodiment 2

[0044] A kind of viscose / brocade blended thread reactive / acid dye one-bath dyeing process is characterized in that:

[0045] The prescription is: reactive red EF-6B reactive dye 2.2% (o.w.f.), Pula red B125% acid dye 2.2% (o.w.f.), soda ash 22g / l, sodium sulfate 2.2g / l, color fixing agent 3.2g / l And acetic acid / sodium acetate is used as a buffer solution; the bath ratio is 55:1,

[0046] The technological process is as follows: prepare dyeing bath (reactive dyes, acid dyes, sodium sulfate), dye the viscose-cotton blended yarn at 45°C, add alkali after dyeing at a constant temperature for 30 minutes, continue to maintain the temperature for 30 minutes to fix the reactive dyes, and then use acetic acid / sodium acetate buffer solution to adjust the pH value to 6.5, slowly raise the temperature (2°C / min) to boil, boil for 25 minutes, then cool down to 85°C, add color-fixing agent for 25 minutes, wash with water, soap, post-treatment, complete the whole dyeing process.

Embodiment 3

[0048] A kind of viscose / brocade blended thread reactive / acid dye one-bath dyeing process is characterized in that:

[0049] The prescription is: Reactive Red EF-6B Reactive Dye 2% (o.w.f.), Pura Red B125% Acid Dye 2% (o.w.f.), Soda Ash 20g / l, Yuanming Powder 2g / l, Fixing Agent 3g / l and Acetic Acid / sodium acetate as a buffer solution; bath ratio is 50:1,

[0050] The process flow is: prepare the dyeing bath (reactive dyes, acid dyes, sodium sulfate), dye the viscose-cotton blended yarn at 40°C, add alkali after dyeing at a constant temperature of 40°C for 30 minutes, and continue to fix the reactive dyes at a constant temperature of 40°C for 30 minutes. Then adjust the pH value to 6 with acetic acid / sodium acetate buffer solution, slowly raise the temperature (2°C / min) to boil, boil for 20 minutes, then cool down to 80°C, add color fixing agent for 20 minutes, wash with water, and then boil with soap. Processing to complete the entire dyeing process.

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Abstract

The invention relates to a dyeing process for viscose / brocade blended silks by an active / acid dye-bath method. The dyeing process is characterized in that the optimal dyeing process with mixed dyes is determined by researching pH, an alkaline agent, an electrolyte, a curing agent, temperature at the early period of dyeing and different heat-holding times, so that better homochromatism is obtained for the viscose / brocade fibers in one-bath dyeing, and higher dye-uptake rate and soaping fastness are obtained.

Description

technical field [0001] The invention relates to the field of dyeing, in particular to a one-bath dyeing process of viscose / brocade blended silk reactive / acid dyes. Background technique [0002] Generally, there are few studies on the dyeing of viscose / nylon blended yarns, mainly the research on cotton / nylon blended fabrics. The traditional cotton / nylon fabric dyeing method adopts two-bath dyeing methods such as disperse / reactive, disperse / direct, and acid / reactive. The process is lengthy and the energy consumption is large, which brings certain difficulties to the dyeing and processing of this type of textiles. [0003] The present invention studies the screening of active / acid dyes and the one-bath dyeing process of viscose / brocade blended yarn and establishes the best dyeing process of mixed dyes, so that the two kinds of viscose / brocade fibers can be better in the same color when they are dyed in one bath. And get a higher dye uptake and soaping fastness. Contents of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38D06P1/39D06P1/651D06P1/673D06P1/653D06P3/87
Inventor 于锦清
Owner WUXI DONGXIN WEAVING
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