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A method for enzymatic wool dyeing

A wool and wool fiber technology, applied in the field of wool fabric dyeing process, can solve the problems of poor biodegradability of chemical fixatives, increased amount of formaldehyde released from fabrics, and limited application range, achieves safe and environmentally friendly treatment process, and improves dye penetration. The effect of low temperature and low temperature of enzymatic treatment

Active Publication Date: 2016-06-08
CHANGXING GUOYUAN PRINTING & DYEING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While these surfactants improve the dyeing depth and fastness of fiber products, some of them also have problems such as increasing the amount of formaldehyde released from the fabric and reducing the hand feel. Application of improving color fastness of protein fiber products
[0004] Enzyme is a pure biological preparation, which is healthy, environmentally friendly and has no residue. Moreover, the temperature of enzyme treatment is low, energy consumption is low, and it will not cause environmental pollution. It is a green technology. Some people have used polyphenol oxidase in the dyeing of wool to improve protein The dyeing fastness of fiber products, but this method is not good enough to see through, and the color is not uniform enough
However, as a pure biological agent with strong substrate specificity and high requirements on the reaction environment, it is still immature to apply to natural fiber treatment, and there are many problems, and the scope of application is not wide
[0005] The present invention aims to provide a process for improving the acid dyeing of wool by combined use of biological enzymes, and the optimized parameters of the process have been verified through a large number of experiments, and the combined use of papain, cellulase, and catechol oxidase to treat cashmere The process has not been reported yet

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Enzyme treatment: after scouring, the wool fiber product is dipped in a compound enzyme solution;

[0027] Among them, the enzyme treatment process conditions are: papain 10U / mL, polyphenol oxidase 6U / mL, cellulase 12U / mL, pH7, temperature 40°C, time 0.5h, bath ratio 1:10;

[0028] (2) Acid dyeing: the wool fiber product after the enzymatic treatment in step (1) is dyed with an acid dye;

[0029] Among them, the prescription and conditions of the dye solution are: weak acid brilliant red B dye 2g / L, pH 4, temperature 60°C, time 100min, liquor ratio 1:30;

[0030] (3) Post-washing treatment: wash the fabric dyed in step (2) at 30-100° C. for 5-20 minutes, with a bath ratio of 1:30;

[0031] The dyed wool fabric obtained in Example 1 was measured, and the results showed that the dyeing depth K / S was 1.356, the washing fastness was grade 4 for discoloration, and grade 5 for staining;

Embodiment 2

[0033] (1) Enzyme treatment: after scouring, the wool fiber product is dipped in a compound enzyme solution;

[0034] Among them, the enzyme treatment process conditions are: papain 12U / mL, polyphenol oxidase 3U / mL, cellulase 15U / mL, pH7, temperature 30-50°C, time 0.5-1h, bath ratio 1:10;

[0035] (2) Acid dyeing: the wool fiber product after the enzymatic treatment in step (1) is dyed with an acid dye;

[0036] Among them, the dye solution prescription and conditions are: weak acid green 3GM dye 2g / L, pH 4, temperature 60°C, time 100min, liquor ratio 1:30;

[0037] (3) Post-washing treatment: wash the fabric dyed in step (2) at 30-100° C. for 5-20 minutes, with a bath ratio of 1:30;

[0038] The dyed wool fabric obtained in Example 2 was measured, and the results showed that the dyeing depth K / S was 1.329, the washing fastness was grade 4 for discoloration, and grade 5 for staining;

Embodiment 3

[0040] (1) Enzyme treatment: after scouring, the wool fiber product is dipped in a compound enzyme solution;

[0041] Among them, the enzyme treatment process conditions are: papain 11U / mL, polyphenol oxidase 5U / mL, cellulase 13U / mL, pH7, temperature 30-50°C, time 0.5-1h, bath ratio 1:10;

[0042] (2) Acid dyeing: the wool fiber product after the enzymatic treatment in step (1) is dyed with an acid dye;

[0043] Among them, the prescription and conditions of the dye solution are: 2 g / L of Pula Red 4B dye, pH 4, temperature 60 ° C, time 100 min, liquor ratio 1:30;

[0044] (3) Post-washing treatment: wash the fabric dyed in step (2) at 30-100° C. for 5-20 minutes, with a bath ratio of 1:30;

[0045] The dyed wool fabric obtained in Example 3 was measured, and the results showed that the dyeing depth K / S was 1.320, the washing fastness was grade 4 for discoloration, and grade 5 for staining;

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PUM

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Abstract

The invention discloses a method for enzymatic wool dyeing. The steps include: (1) Enzyme treatment: after scouring, soak wool fiber products in a compound enzyme solution; wherein, the enzymatic treatment process conditions are: papain 10- 12U / mL, polyphenol oxidase 3-6U / mL, cellulase 12-15U / mL, pH7, temperature 30-50°C, time 0.5-1h, bath ratio 1:10; (2) acid dyeing: the step (1) After enzymatic treatment, wool fiber products are dyed with acid dyes; (3) Post-washing treatment: wash the fabric after step (2) at 30-100°C for 5-20 minutes, and the liquor ratio is 1:5-30 .

Description

technical field [0001] The invention relates to a wool fabric dyeing process. Background technique [0002] Wool is a high-grade natural protein fiber with soft luster, excellent elasticity, plump feel, good warmth retention, wear resistance and moisture absorption. Due to the hydrophobic outer skin layer and dense scale layer on the wool fiber, the dyeing and internal diffusion of the dye are hindered, so wool dyeing generally needs to be treated at high temperature for a long time to meet the requirements, which not only consumes a lot of energy, but also causes wool dyeing. Yellowing affects spinnability, yield, hand feel, vividness and luster, and adversely affects the quality of wool fiber. [0003] Acid dyes have many advantages such as bright colors, complete chromatograms, and good level dyeing properties, and are widely used in dyeing wool and other animal hairs. Since most acid dyes have a small molecular weight, the hydrogen bond between the dye and the fiber an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M16/00D06P1/39D06P3/16D06P5/02D06M101/12
Inventor 李国元
Owner CHANGXING GUOYUAN PRINTING & DYEING
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