Dyeing method of protein material

A dyeing method and protein technology, applied in dyeing method, textile and papermaking, etc., can solve the problems of refractory dye degradation, affecting the survival of aquatic organisms, human and other biological survival hazards, etc., to reduce dyeing energy consumption and avoid colored wastewater. Emissions, low cost effect

Inactive Publication Date: 2010-07-21
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the production and use of dyes, about 10-15% of dyes are discharged into the environment with wastewater. Since these dyes are required to have certain resistance to light, heat, microorganisms, etc. during the design process, they are discharged with wastewater The dyes lost to the environment are difficult to degrade, and because the dyes have strong light-absorbing ability, when they are lost to rivers, lakes and oceans, they will absorb a large amount of sunlight that irradiates the water, reducing the sunlight that irradiates the bottom of the water and affecting aquatic life. The survival of organisms, and many dyes and their anaerobic degradation products have certain toxicity, teratogenicity and carcinogenicity, which bring great harm to the survival of humans and other organisms

Method used

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  • Dyeing method of protein material
  • Dyeing method of protein material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] To dye 10g of real silk fabric, the dyeing liquor ratio is 1:20.

[0036] First, the aromatic amine compound is prepared into a diazonium salt by a traditional method: 2.3 g of aniline is dissolved in 8.9 g of concentrated hydrochloric acid and 15 g of water, cooled to 0 ° C, and an aqueous solution of sodium nitrite (1.8 g of sodium nitrite and 4 g water), keep the reaction system at 0-5°C, drop it for about 5 minutes, and keep it warm for 30 minutes, then check it with starch-potassium iodide test paper, destroy the excess sodium nitrite with urea, and prepare the diazonium salt solution.

[0037] Immerse 10g of silk fabric in 200mL aqueous solution containing 0.2g / L sodium hydroxide and 5g / L sodium carbonate, and cool to 0°C, then add the above-mentioned clear diazonium salt solution to the system dropwise, after the dropwise addition is completed Keep warm at 0°C for 30 minutes, then warm up to room temperature and keep warm for 40 minutes to get brown silk fabric. ...

Embodiment 2

[0040] Dye woolen fabric 10g, the dyeing bath ratio is 1:100.

[0041] First use the traditional method to make the diazonium salt solution of the aromatic amine: Dissolve 0.5g of o-nitroaniline in a mixed solution of 10g of water and 1.5g of concentrated hydrochloric acid at 0°C, stir well and add 0.37g of nitroaniline to the system Sodium nitrate, and then keep it warm at 0-5°C for 30 minutes, then test it with starch-potassium iodide test paper, and destroy the excess sodium nitrite with urea to prepare a diazonium salt solution.

[0042] Immerse 10g of wool fabric into 1000mL aqueous solution containing 0.1g / L sodium hydroxide and 0.5g / L sodium carbonate, and cool to 5°C, then add the above clear diazonium salt solution to the system dropwise, the dropwise addition is complete Afterwards, keep it warm at 5°C for 120 minutes, then raise the temperature to room temperature and keep it warm for 30 minutes to obtain orange-red woolen fabric.

[0043] Then wash in hot water an...

Embodiment 3

[0045] Dyeing 10g of real silk yarn, the dyeing bath ratio is 1:50.

[0046] First, the aromatic amine compound is prepared into a diazonium salt solution by using a traditional process: 10 mL of 5% sodium hydroxide solution and 1.91 g of p-aminobenzenesulfonic acid crystals are placed in a beaker, and heated to dissolve. Dissolve 0.8g of sodium nitrite in 6mL of water, add it to the above beaker, then transfer it to a 100mL three-neck flask, and cool it to 0-5°C with an ice-water bath. Under constant stirring, slowly add a solution of 3 mL of concentrated hydrochloric acid and 10 mL of water dropwise into the above mixture, and control the temperature below 5°C. After the dropwise addition, check with starch-potassium iodide test paper (slightly blue). Then place it in an ice-water bath for 15 min to ensure the complete reaction. Excess nitrous acid is destroyed with urea.

[0047] Immerse 10g of silk yarn into 500mL aqueous solution containing 0.2g / L sodium hydroxide and ...

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Abstract

The invention discloses a dyeing method of protein material. Arylamine compound is diazotized and then is directly coupled with tyrosine segment in protein molecule, so as to generate coloured substance containing azo bond; dosage of arylamine compound is equivalent to 0.1-5% of weight of protein material, and dyeing bath ratio is 1:20-100. Arylamine compound is taken as colour base and diazotized and then is directly coupled with tyrosine segment in protein molecule, and coloured substance connected with main chain by covalent bond in protein molecule, thus realizing dyeing on protein material and obtaining various colours by selecting arylamine colour bases in different structures. The dyeing method has the advantages of low energy consumption, less pollution and high colour fastness. The protein fiber fabric obtained by the method has higher wet-processing fastness; and the dyed protein powder also has higher fastness. The invention also provides a new dyeing method for protein material.

Description

technical field [0001] The invention relates to a dyeing method, in particular to a protein material dyeing method. Background technique [0002] The protein material of the present invention includes protein fibers and powders made from these protein fibers by various methods. Protein fiber is a type of natural fiber that was used earlier by humans and is still used in large quantities, mainly including natural fibers such as silk, wool, cashmere, poultry feathers, down, rabbit hair, rabbit hair, camel hair and human hair, and soybean fibers , milk fiber and other man-made fibers, of which silk and wool fibers are used in large amounts and are favored by people; protein powder is mainly a powder made of various protein fibers by physical, chemical and biochemical methods. It is used in the cosmetics industry. The basic composition of these powders is the same as the protein fibers used to prepare these powders, so they can still be regarded as special protein fibers. In so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/12D06P3/22D06P3/02D06P3/82
Inventor 陈维国孟照成崔志华方颂曹益宁胡青青刘凯
Owner ZHEJIANG SCI-TECH UNIV
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