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Method of treating wool using composite protease directed against wool structure and dyestuff characteristics

A technology of composite protease and protease, applied in the field of textile dyeing and finishing, can solve problems such as reducing dyeing temperature

Inactive Publication Date: 2004-12-22
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using biological enzymes to treat wool, most of them only consider the specificity of biological enzymes in a wide range, such as protease (catalyzes the degradation of peptide bonds), lipase (catalyzes the degradation of ester bonds), transglutaminase (peptide bonds that are cut off by proteases) Reconnection), etc.; for the specificity of wool, only a rough aspect is considered: for example, wool fiber is mainly composed of protein, and some lipids (cell membrane and intercellular substances), etc.; after the enzyme treatment, the dyeing properties In terms of impact, only the modification of wool after biological enzyme treatment is considered, which increases the diffusion channel of the dye, reduces the dyeing temperature, and improves the dye exhaustion rate during low-temperature dyeing

Method used

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  • Method of treating wool using composite protease directed against wool structure and dyestuff characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: Wool pretreatment——hydrogen peroxide pretreatment

[0019] Hydrogen peroxide pretreatment wool fabric: 30% hydrogen peroxide 20ml / L, sodium pyrophosphate 1.25g / L, Pingping O 0.5% (cloth weight percentage), PH=7.5, temperature 45°C, bath ratio 1:20, time 30min.

Embodiment 2

[0020] Embodiment 2: Wool pretreatment——hydrogen peroxide pretreatment

[0021] Hydrogen peroxide pretreatment wool fabric: 30% hydrogen peroxide 5ml / L, sodium pyrophosphate 0.1g / L, Pingping O 0.1% (cloth weight percentage), PH=7, temperature 20°C, bath ratio 1: 40, time 60min.

Embodiment 3

[0022] Embodiment 3: Wool pretreatment——hydrogen peroxide pretreatment

[0023] Hydrogen peroxide pre-treatment wool fabric: 30% hydrogen peroxide 40ml / L, sodium pyrophosphate 2g / L, Pingping plus O 2% (cloth weight percentage), PH=8, temperature 70°C, bath ratio 1:30, time 10min.

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Abstract

A process for treating wool by use of different composite enzymes according to wool structure and dye characteristics includes ecological pretreating with H2O2 or disulfide-bond isomerase and modifying wool by the composite enzyme consisting of two or more different proteinases. It can realize low-temp dyeing and increase the dye exhausting rare, dyeing rate, and color fastness.

Description

Technical field: [0001] The invention relates to a method for treating wool with biological compound enzyme. In particular, it relates to a method for treating wool with compound protease aiming at wool structure and dye properties. It belongs to the technical field of textile dyeing and finishing. technical background: [0002] With the improvement of people's living standards and the enhancement of environmental protection awareness, people are more and more inclined to use natural environmental protection products and pay attention to the cleanliness of the product manufacturing process. In the wool spinning industry, the use of biological enzymes to treat wool for various modification purposes and the use of natural dyes for dyeing are meeting this requirement. From the renewability of raw materials to the environmental harmlessness of the production process and the natural and healthy nature of the final product, it shows the sustainability and good prospects of this ...

Claims

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Application Information

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IPC IPC(8): D06M16/00
Inventor 程文红张新龙周启澄王璐贾舜华赵国英
Owner DONGHUA UNIV
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