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Preparation method of aldehyde-free textile color fixing agent

A color-fixing agent and a technology of preparation steps, which are applied in the field of preparation of formaldehyde-free textile color-fixing agents, can solve the problems of further improvement in the fastness to wet rubbing, and achieve the goal of improving color fastness to washing, improving dyeing performance, and reducing water solubility. Effect

Inactive Publication Date: 2019-12-03
陈桂川
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the current development and application of color fixing agents, the non-formaldehyde and color fixing effects of color fixing agents have made great achievements, but there are still some indicators such as wet rubbing fastness, light fastness and chlorine fastness, etc. still needs to be further improved

Method used

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  • Preparation method of aldehyde-free textile color fixing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In parts by weight, weigh 40 parts of cotton pulp, 120 parts of absolute ethanol, 20 parts of sodium hydroxide, and 40 parts of chloroacetic acid, put the cotton pulp in a powerful pulverizer, and pulverize at room temperature for 40 minutes to obtain pulverized Put the crushed cotton pulp and sodium hydroxide in anhydrous ethanol in an ultrasonic cleaning machine, and ultrasonicate at a constant temperature for 2 hours at 40 ° C and 3000 Hz to obtain an alkalized solution. Add monochloroacetic acid to the alkali In the chemical solution, stir etherification at 200r / min in a water bath at 70°C for 3h, filter, and take the solid to obtain crude carboxymethyl cellulose, which is mixed with acetic acid solution with a mass concentration of 1%. Wash until neutral, then wash 3 times with absolute ethanol, place in an oven and dry at 40°C for 30 minutes to obtain carboxymethyl cellulose, and then weigh 50 parts of carboxymethyl cellulose in parts by weight element, 10 parts o...

Embodiment 2

[0041] In terms of parts by weight, weigh 45 parts of cotton pulp, 135 parts of absolute ethanol, 23 parts of sodium hydroxide, and 45 parts of chloroacetic acid, put the cotton pulp in a powerful pulverizer, and pulverize at room temperature for 50 minutes to obtain pulverized Put the crushed cotton pulp, sodium hydroxide and absolute ethanol in an ultrasonic cleaning machine, and ultrasonicate at a constant temperature for 2.5 hours under the adjustment of 45°C and 3500Hz to obtain an alkalized solution, and add monochloroacetic acid In the alkalization solution, stir etherification at 220r / min in a water bath at 75°C for 4h, filter, and take the solid to obtain crude carboxymethyl cellulose, which is treated with acetic acid with a mass concentration of 1%. The solution was washed to neutrality, then washed 4 times with absolute ethanol, placed in an oven and dried at 45°C for 35 minutes to obtain carboxymethyl cellulose, and weighed 55 parts by weight of carboxymethyl cellu...

Embodiment 3

[0043] In parts by weight, weigh 50 parts of cotton pulp, 150 parts of absolute ethanol, 25 parts of sodium hydroxide, and 50 parts of chloroacetic acid, put the cotton pulp in a powerful pulverizer, and pulverize at room temperature for 60 minutes to obtain pulverized Put the crushed cotton pulp and sodium hydroxide in anhydrous ethanol in an ultrasonic cleaning machine, and ultrasonicate at a constant temperature for 3 hours at 50°C and 4000 Hz to obtain an alkalized solution. Add monochloroacetic acid to the alkali In the chemical solution, stir etherification at 240r / min in a water bath at 80°C for 5h, filter, and take the solid to obtain crude carboxymethyl cellulose, which is mixed with acetic acid solution with a mass concentration of 1%. Wash until neutral, then wash 5 times with absolute ethanol, place in an oven and dry at 50°C for 40 minutes to obtain carboxymethyl cellulose, and then weigh 60 parts of carboxymethyl cellulose in parts by weight element, 12 parts of ...

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Abstract

The invention relates to a preparation method of an aldehyde-free textile color fixing agent, and belongs to the technical field of textiles. The aldehyde-free textile color fixing agent is prepared by adding carboxymethyl cellulose hydrogel; hydrogen bonds, coordination bonds and van der waals force can be formed among groups of the carboxymethyl cellulose, a dye and fibers, and the color fixation rate of the dye is improved; the carboxymethyl cellulose is high in molecular weight so that a layer of thin film can be easily formed on the surface of a fabric and wrap dye molecules and water-soluble groups thereof, the difficulty is increased for the dye when the dye is dissolved and falls off from the surface of the fabric during washing, and the wet treatment fastness is improved; the carboxymethyl cellulose, metal salt and inorganic salt can form sol through hydrolysis or decondensation, the micro sol particles have a large specific surface area and relatively high specific surface energy, the particles are made to form a three-dimensional net structure, a layer of oxide thin film is formed on the fabric and wraps the dye molecules and the water-soluble groups thereof, the difficulty is increased for the dye when the dye is dissolved and falls off from the surface of the fabric during washing, and the wet treatment fastness is improved.

Description

technical field [0001] The invention relates to a method for preparing a formaldehyde-free textile color fixing agent, which belongs to the technical field of textiles. Background technique [0002] With the improvement of human material civilization and the continuous enhancement of people's awareness of environmental protection and health, and the country's higher and higher hygienic requirements for textiles, laws and regulations have been passed to prohibit the import and sale of direct, indirect and possible carcinogenic substances such as free formaldehyde. Textiles etc. At the same time, with the increase of China's textile exports, the demand of textile enterprises for formaldehyde-free color fixing agents is also increasing day by day. Traditional color-fixing agents are synthesized from formaldehyde, dicyandiamide and ammonium chloride, etc., which can easily cause discoloration and rough hand feeling of dyed products, especially the high formaldehyde content, whi...

Claims

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Application Information

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IPC IPC(8): D06P5/06D06P5/08
CPCD06P5/06D06P5/08
Inventor 陈桂川
Owner 陈桂川
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