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A kind of hydrogen peroxide bleaching catalyst and preparation method thereof

A bleaching catalyst and hydrogen peroxide technology, applied in the field of textile printing and dyeing, can solve the problems of environmental pollution, large fiber damage, high energy consumption, etc., and achieve the effects of shortening bleaching time, reducing dosage, and solving high energy consumption

Active Publication Date: 2016-08-24
QIANJINAG YIHE CHEM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hydrogen peroxide bleaching catalyst, which solves the problems of high energy consumption, large fiber damage and environmental pollution caused by the traditional hydrogen peroxide high-temperature and high-alkali bleaching process

Method used

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  • A kind of hydrogen peroxide bleaching catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1, prepare gelatin protein solution:

[0038] Weigh 15kg of gelatin protein and 30kg of water, add the gelatin protein into the water, control the temperature at 80°C, dissolve for 40min, and obtain the gelatin protein solution;

[0039] Step 2, prepare copper sulfate solution:

[0040] Weigh 1 kg of copper sulfate and 2 kg of water, add copper sulfate to water, control the temperature at 40 ° C, dissolve for 20 minutes, and obtain a copper sulfate solution;

[0041] Step 3, prepare hydrogen peroxide bleaching catalyst:

[0042] Evenly mix the gelatin protein solution prepared in step 1 with the copper sulfate solution prepared in step 2, control the temperature at 20°C, and stir at a speed of 400rpm, add 60g / L sodium hydroxide solution dropwise, and adjust the pH value of the solution to 9 , and continue to stir for 5 minutes to obtain a hydrogen peroxide bleaching catalyst.

Embodiment 2

[0044] Step 1, prepare gelatin protein solution:

[0045] Weigh 10kg of gelatin protein and 50kg of water, add the gelatin protein into the water, control the temperature at 30°C, dissolve for 60min, and obtain the gelatin protein solution;

[0046] Step 2, prepare copper sulfate solution:

[0047] Weigh 0.5kg of copper sulfate and 2.5kg of water, add copper sulfate to water, control the temperature at 60°C, dissolve for 5min, and obtain copper sulfate solution;

[0048] Step 3, prepare hydrogen peroxide bleaching catalyst:

[0049] Evenly mix the gelatin protein solution prepared in step 1 with the copper sulfate solution prepared in step 2, control the temperature at 40°C, stir at 500 rpm, add 80 g / L sodium hydroxide solution dropwise, and adjust the pH value of the solution to 10 , and continue to stir for 10 minutes to obtain a hydrogen peroxide bleaching catalyst.

Embodiment 3

[0051] Step 1, prepare gelatin protein solution:

[0052] Weigh 7kg of gelatin protein and 70kg of water, add the gelatin protein into the water, control the temperature at 60°C, dissolve for 10min, and obtain the gelatin protein solution;

[0053] Step 2, prepare copper sulfate solution:

[0054] Weigh 0.1kg of copper sulfate and 1kg of water, add copper sulfate to water, control the temperature at 20°C, and dissolve for 30min to obtain copper sulfate solution;

[0055] Step 3, prepare hydrogen peroxide bleaching catalyst:

[0056] Evenly mix the gelatin protein solution prepared in step 1 with the copper sulfate solution prepared in step 2, control the temperature at 60°C, and the stirring speed at 600rpm, add dropwise 100g / L sodium hydroxide solution, and adjust the pH value of the solution to 12 , and continue to stir for 30 minutes to obtain a hydrogen peroxide bleaching catalyst.

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Abstract

The invention discloses a hydrogen peroxide bleaching catalyst. The hydrogen peroxide bleaching catalyst is formed by mixing a glutin solution and a copper sulfate solution, and the mass ratio of a glutin solute to a copper sulfate solute in a mixed liquid is (15-70):1. The invention further discloses a preparation method of the catalyst. The hydrogen peroxide bleaching catalyst is an aid formed by complexing of glutin and bivalent copper ions, when the catalyst is applied to a hydrogen peroxide bleaching process for fabrics such as cotton and the like, hydrogen peroxide can be effective catalyzed for bleaching, damage to the fabrics can be reduced, the bleaching temperature can be decreased, the bleaching time can be shortened, the consumption of an alkali in bleaching can be reduced, and low-temperature low-alkali hydrogen peroxide bleaching of the fabrics can be realized, so that problems of energy consumption, fiber damage and pollution caused by traditional high-temperature high-alkali hydrogen peroxide bleaching are solved. Besides, raw materials of the aid come from waste protein, waste resources are effectively utilized, environment-friendly and clean production is realized, and the concept of establishing the resource-saving and environment-friendly society is conformed.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and relates to a hydrogen peroxide bleaching catalyst, and also relates to a preparation method of the catalyst. Background technique [0002] Cotton fabric is a natural fiber product, which has the advantages of strong hygroscopicity, soft touch, comfortable wearing, and not easy to be eaten by insects, so it can be widely used. Bleaching is indispensable for the pretreatment of cotton fabrics. The traditional bleaching methods include: sodium hypochlorite bleaching, sodium chlorite bleaching, and hydrogen peroxide bleaching. The most widely used is hydrogen peroxide bleaching, which has the advantages of low price, good bleaching and impurity removal effects, and less pollution. . However, hydrogen peroxide bleaching usually needs to be carried out under high temperature and high alkali conditions, which brings about problems such as high energy consumption, increased fiber...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06L3/02D06L4/12D06L4/13
Inventor 王雪燕唐俊玲
Owner QIANJINAG YIHE CHEM PROD
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