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Preparation method of hydrophilic cationic formaldehyde-free fixing agent

An aldehyde-free color-fixing agent, cationic technology, applied in the direction of dyeing, textile and paper making, etc., can solve the problem of the decrease of hydrophilicity of cotton fiber, and achieve the effect of improving hydrophilicity and water absorption.

Active Publication Date: 2012-04-11
江西德盛精细化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has an ideal color fixing effect, but the hydrophobicity of the fiber surface after the color fixing and film formation is enhanced, resulting in a decrease in the hydrophilicity of the cotton fiber. Therefore, a cationic formaldehyde-free color fixing agent with good hydrophilicity is developed for textiles, especially Printing and dyeing industry, has very practical value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Add 30g of the mixture of N,N-diethylallylamine and N,N-dibutylenebutylamine (the weight ratio of the two is 2:1) into the flask, place it in an ice-water bath, and weigh Take 20g of dimethyl sulfate in the dropping funnel, slowly add it dropwise in 30 minutes, control the reaction temperature in the flask to about 60°C, and then stir for 30 minutes;

[0025] Ⅱ. Add 60g of propylene alcohol polyoxyethylene ether, 200g of N-methylethylene ethyl ammonium chloride, 0.04g of ethylenediaminetetraacetic acid disodium salt, and 500g of water in sequence, and stir for 10 minutes;

[0026] Ⅲ. Raise the temperature to 80°C, start to add 8g of ammonium persulfate initiator dropwise, the dropwise addition time is 2h, and keep warm for 2h after the dropwise addition is completed.

[0027] Ⅳ. After the heat preservation is over, adjust the pH value to 6 with liquid caustic soda to obtain a hydrophilic cationic formaldehyde-free color-fixing agent.

Embodiment 2

[0029] 1. Add 60g of the mixture of N,N-diethylallylamine and N,N-dipropylallylbutylamine (the weight ratio of the two substances is 3:1) into the flask, and place it in an ice-water bath. Weigh 70g of benzyl chloride into the dropping funnel, slowly add it dropwise in 60 minutes, control the reaction temperature in the flask to about 40°C, and then stir for 30 minutes;

[0030] Ⅱ. Add 60g of vinyl alcohol polyoxyethylene ether, 600g of N-butylene ethyl ammonium chloride, 0.04g of ethylenediaminetetrapropionic acid sodium salt, 200g of water, and stir for 30min;

[0031] Ⅲ. Raise the temperature to 70°C, start to drop 10g of potassium persulfate initiator, dropwise for 2h, keep warm for 1h after the dropwise addition;

[0032] Ⅳ. After the heat preservation is over, adjust the pH value to 7 with liquid caustic soda to obtain a hydrophilic cationic formaldehyde-free color-fixing agent.

Embodiment 3

[0034] Ⅰ. Add 40g of the mixture of N-methylethyleneethylamine and N-ethyleneethylamine (the weight ratio of the two substances is 1:2) into the flask, place it in an ice-water bath, and weigh 40g of epoxy chlorine Slowly add propane in the dropping funnel for 40 minutes, control the reaction temperature in the flask to about 30°C, and then stir for 40 minutes;

[0035] Ⅱ. Add 180g of diallyl alcohol polyoxyethylene ether, 400g of N-ethylallyl ammonium chloride, 0.1g of aminotriacetic acid sodium salt, and 350g of water in sequence, and stir for 20 minutes;

[0036] Ⅲ. Raise the temperature to 60°C, start to add 20g of azobisisobutylamidine hydrochloride initiator dropwise, the dropwise addition time is 4h, and keep warm for 3h after the dropwise addition is completed.

[0037] Ⅳ. After the heat preservation is over, adjust the pH value to 8 with liquid caustic soda to obtain a hydrophilic cationic formaldehyde-free color-fixing agent.

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Abstract

The invention relates to a preparation method of a hydrophilic cationic formaldehyde-free fixing agent. The method is characterized by comprising the following steps of: I, dropwise adding 20-70 parts by weight of a quaternizing reagent into 30-60 parts by weight of olefin alkyl amine under the ice-water bath condition, and then stirring; II, adding 60-180 parts by weight of alkylene alcohol polyethenoxy ether, 200-600 parts by weight of alkyl olefin alkyl ammonium chloride, 0.04-0.5 part by weight of a metal ion screening agent and 200-500 parts by weight of water in sequence, and stirring; III, raising the temperature to 60-90 DEG C, dropwise adding 8-20 parts by weight of a water-soluble initiator, preserving heat and reacting for a certain period of time; and IV, after the reaction, regulating the pH value to 5-8 with a caustic soda liquid to obtain the hydrophilic cationic formaldehyde-free fixing agent. Compared with the conventional cationic formaldehyde-free fixing agent, the fixing agent has the advantages of higher hydrophilicity and applicability to fixing for cotton fiber active dyeing.

Description

technical field [0001] The invention relates to a method for preparing a color-fixing agent, in particular to a method for preparing a hydrophilic cationic formaldehyde-free color-fixing agent. Background technique [0002] Textile fibers include natural fibers and chemical fibers. With the enhancement of people's awareness of environmental protection and health, natural fibers are becoming more and more popular; among natural fibers, cotton fibers are widely used in the textile fiber stage due to their good hygroscopicity and warmth retention. plays an important role. [0003] At present, the dyes used in cotton fiber printing and dyeing include vat dyes, sulfur dyes, direct dyes and reactive dyes. Reactive dyes are composed of parent dyes, linking groups and active groups, which can form strong covalent bonds with cellulose fibers when used, thus possessing a series of incomparable advantages over other cellulose fiber dyes. However, when reactive dyes are dyed, especial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P5/08C08F290/06C08F226/02
Inventor 段宝荣王全杰
Owner 江西德盛精细化学品有限公司
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