Stripping agent for cationic dye dyed acrylic fabric and stripping method

A cationic dye and color stripping agent technology, which is applied in the field of color stripping agent for acrylic dyed fabrics, can solve the problems of poor reproducibility, unclean color stripping, and not deep dyeing, etc., to reduce consumption, improve environmental protection, and improve economic benefits Effect

Active Publication Date: 2016-01-20
ZHEJIANG TEXTILE & FASHION COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, cationic quaternary ammonium salt compounds are used for the stripping treatment of cationic dyed acrylic fabrics. The disadvantage is that the stripping is not clean, and it is easy to cause problems such as not deep dyeing or poor reproducibility during re-dyeing.

Method used

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  • Stripping agent for cationic dye dyed acrylic fabric and stripping method
  • Stripping agent for cationic dye dyed acrylic fabric and stripping method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: 32s pure acrylic yellow 1*1 rib fabric

[0017] The color stripping agent used in this embodiment comprises the following components in important percentages: 40% sodium stearate, 5% sodium alkylsulfonate, 10% fatty alcohol polyoxyethylene ether, and the balance is water. After each component is weighed according to the above weight percentage, the stripping agent is prepared.

[0018] The stripping and re-staining process is as follows:

[0019] After dyeing with 0.3% Cationic Yellow X-8GL at 100°C and pH=4 for 40min, under the conditions of stripping agent 4g / L and bath ratio 1:20, the temperature was raised to 100°C at a rate of 2°C / min. ℃, stripping treatment for 20 minutes, draining, 60 ℃ hot water washing, cold water washing; then prepare 0.3% dye solution for counter-staining, 70 ℃ put dye, glacial acetic acid (adjust pH value = 4), at 1 ℃ / min Raise the temperature to 85°C at a rate of 10 minutes, heat it up to 95°C at a rate of 1°C / 2min, hold it for...

Embodiment 2

[0020] Example 2: 32s pure acrylic blue 1*1 rib fabric

[0021] The stripping agent used in this embodiment comprises the following components in important percentages: 45% sodium stearate, 10% sodium alkylsulfonate, 15% polyvinyl alcohol, and the balance is water. After each component is weighed according to the above weight percentage, the stripping agent is prepared.

[0022] The stripping and re-staining process is as follows:

[0023] After dyeing with 1.0% Cationic Blue X-GRRRL at 100°C and pH=4.5 for 50 minutes, under the conditions of stripping agent 6g / L and bath ratio 1:20, the temperature was raised to 100 at a rate of 2°C / min. ℃, stripping treatment for 25 minutes, draining, 60 ℃ hot water washing, cold water washing; then prepare 1.0% dye solution for counter-staining, 70 ℃ put dye, glacial acetic acid (adjust pH value = 4.5), at 1 ℃ / min Raise the temperature to 85°C at a rate of 10 minutes, heat it up to 95°C at a rate of 1°C / 2min, hold it at a temperature of 1...

Embodiment 3

[0024] Example 3: 32s pure acrylic black 1*1 rib fabric

[0025] The stripping agent used in this embodiment includes the following components in important percentages: 50% sodium stearate, 10% sodium lauryl sulfate, 15% fatty alcohol polyoxyethylene ether, and the balance is water. After each component is weighed according to the above weight percentage, the stripping agent is prepared.

[0026] The stripping and re-staining process is as follows:

[0027] After dyeing with 2% cationic black at 100°C and pH=5 for 60min, under the conditions of stripping agent 8g / L and bath ratio 1:20, raise the temperature to 100°C at a rate of 2°C / min, strip Color treatment for 30 minutes, draining, washing with hot water at 60°C, and washing with cold water; then prepare 2% dye solution for counterstaining, add dye and glacial acetic acid at 70°C (adjust pH = 5), and heat up at a rate of 1°C / min Heat to 85°C, keep warm for 10 minutes, heat up to 95°C at a rate of 1°C / 2min, hold for 10 min...

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Abstract

The invention provides a stripping agent for cationic dye dyed acrylic fabric. The stripping agent comprises components in percentage by weight as follows: 40%-50% of high fatty acid salt, 5%-10% of a permeating agent, 10%-15% of a dispersing agent and the balance of water, wherein the high fatty acid salt adopts sodium salt of C16-C18 fatty acid; the permeating agent adopts an anionic surfactant; the dispersing agent adopts one of a polyether nonionic surfactant and polyvinyl alcohol. A stripping method adopting the stripping agent comprises steps as follows: a stripping liquid containing 4-8 g / L of the stripping agent is prepared, and a bath ratio is 1: (20-30); the temperature is increased to 100 DEG C at a speed of 2-3 DEG C / min, and stripping treatment is performed for 20-30 min; the fabric is rinsed completely. With the adoption of the method, the stripping rate can be up to 40%-60%, the fabric after stripping is redyed, the K / S value of the dyed fabric is increased by 5%-10% compared with that of the fabric before stripping, the use quantity of the dye can be reduced, and the economic benefit is increased.

Description

technical field [0001] The invention relates to the technical field of stripping acrylic colored patterned fabrics, in particular to a stripping agent for acrylic colored patterned fabrics dyed with cationic dyes, and a stripping method for the stripped colored patterned fabrics. Background technique [0002] When cationic dyes dye acrylic fabrics, since the cationic dyes and acrylic fibers are combined in the form of ionic bonds, the dyes have a relatively high affinity for the fibers, a high initial dyeing rate, and poor migration properties. The products are prone to uneven dyeing, Defects such as poor reproducibility. Therefore, it is necessary to often carry out stripping and re-dyeing treatment on the defective acrylic fiber color. There are few studies on the stripping of cationic dyes at home and abroad, and special stripping agents are extremely scarce on the market. Generally, fiber-friendly cationic quaternary ammonium compounds are used in the stripping treatme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P5/10D06P5/08D06P5/04D06P5/15D06P3/70
Inventor 王华清陈海珍王梅珍
Owner ZHEJIANG TEXTILE & FASHION COLLEGE
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