Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

In-situ coupled dyeing method for enzymatic protein fiber

A protein fiber, in-situ technology, applied in the direction of dyeing, textiles and papermaking, can solve the problems of low dyeing depth of protein fiber products, unable to meet the dyeing and finishing requirements of dark fiber products, etc., to avoid poor dyeing fastness. , high dyeing depth and fastness, the effect of increased dyeing depth

Inactive Publication Date: 2019-02-22
JIANGNAN UNIV
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, when unmodified protein fibers are coupled with aromatic diazonium salts to generate color, the dyeing depth of the obtained protein fiber products is low, which cannot meet the dyeing and finishing requirements of dark fiber products.

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Carry out in-situ coupling dyeing of real silk fabrics using mulberry silk as raw material with the method mentioned in the present invention;

[0036] (1) Oxidation pretreatment of silk fabrics: immerse silk fabrics in hydrogen peroxide solution, wherein hydrogen peroxide is 2g / L, treatment temperature is 45°C, pH 8.5, time is 15min, liquor ratio is 1:40;

[0037] (2) Enzyme-catalyzed amino acid conversion: soak the silk fabric treated in step (1) in the tyrosine phenol lyase treatment liquid, wherein tyrosine phenol lyase 12.5U / ml, phenol 2.5g / L, pyridoxine phosphate Aldehyde 1g / L, ammonium chloride 0.5g / L; treatment at 40°C and pH 7 for 4 hours, bath ratio 1:40; after the treatment, the silk fabric was washed and dried;

[0038] (3) padding lye of real silk fabric: the real silk fabric that step (2) is processed is pad-pad caustic soda solution, wherein caustic soda 0.05g / L, excess rate 100%, padding temperature 20 ℃, bake at 40 ℃ after padding Dry;

[0039] (4) In...

Embodiment 2

[0046] Carry out coupling dyeing of woolen fabric with wool as raw material with the method mentioned in the present invention.

[0047] (1) Oxidation pretreatment of wool fabric: soak wool fabric in hydrogen peroxide solution, wherein hydrogen peroxide is 8g / L, treatment temperature is 55°C, pH 10, time is 45min, liquor ratio is 1:40;

[0048](2) Enzyme-catalyzed amino acid conversion: soak the wool fabric treated in step (1) in tyrosine phenol lyase solution, wherein tyrosine phenol lyase 100U / mL, phenol 10g / L, pyridoxal phosphate 5g / mL L. Ammonium chloride 2g / L; treat for 40 hours at 45°C and pH 8.5, bath ratio 1:40; wash and dry the woolen fabric after the treatment;

[0049] (3) wool fabric padding lye: the wool fabric that step (2) handles is pad-pad caustic soda solution, wherein caustic soda 1.0g / L, excess rate 100%, padding temperature 30 ℃, bake at 60 ℃ after padding Dry;

[0050] (4) In-situ coupling dyeing of wool fabric: dissolve 2g / L p-nitroaniline with 15g / L h...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an in-situ coupled dyeing method for an enzymatic protein fiber. Serine in the protein fiber is catalyzed by tyrosine phenol-lyase so as to be converted into tyrosine, and then, the in-situ coupled dyeing of the protein fiber is accelerated due to a coupled reaction of tyrosine in the protein fiber and an aromatic diazonium salt. The in-situ coupled dyeing method specifically comprises the following steps: (1) oxidation pretreatment of the protein fiber; (2) enzymatic amino acid conversion; (3) protein fiber padding in an alkaline solution; and (4) in-situ coupled dyeing of the protein fiber. Compared with conventional acid dye dyeing and unmodified protein fiber and aromatic diazonium salt coupled dyeing of a protein fiber product, the method disclosed by the invention has the advantages of low energy consumption, high enzymatic reaction efficiency and high dyeing depth and fastness.

Description

technical field [0001] The invention relates to an enzymatic protein fiber in-situ coupling dyeing method, which belongs to the field of textile biotechnology. Background technique [0002] In protein fiber dyeing, the most commonly used dyes include acid dyes, acid mordant dyes and neutral dyes. Among them, acid dyes have bright colors, complete chromatograms, and good level dyeing properties, and are widely used in protein fiber dyeing; but the hydrogen bonds and van der Waals forces between acid dyes and protein fibers are weak, and acid dyeing needs to be added to promote dyeing. Therefore, fiber products The color fastness is mostly low. In order to improve the color fastness of protein fiber products, acid mordant dyes and neutral dyes are used in dyeing. Compared with acid dyes, the dyeing depth and fastness of the two have increased, but the color brightness is not enough, and the metal salts in the dyeing of acid mordant dyes tend to remain in fiber products, whic...

Claims

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/12D06P3/14D06P3/04D06P5/22
CPCD06P1/127D06P3/04D06P3/14D06P5/22
Inventor 王平张丰腾于雪洁罗彪王强
Owner JIANGNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com