Anionic dye fixing agent with formaldehyde removal function and preparation method thereof

An anionic dye and color-fixing agent technology, which is applied in dyeing, textiles and papermaking, can solve the problems of low wet rubbing fastness and achieve the effects of improved color fastness, no safety hazards, and good use prospects

Active Publication Date: 2015-09-02
清远市泓旺纺织材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nature of leather tanning and fiber determines that the dyes used in the dyeing process are mostly anionic dyes (direct dyes and acid dyes). However, direct dyes and acid dyes contain hydrophilic hydroxyl groups, sulfonic acid groups, carboxylic acid groups and Amino, low wet rubbing fastness in acid and alkaline solutions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1: Preparation of amino-terminated hyperbranched polymer: Add N,N-methylenebisacrylamide and diethylenetriamine with a mass ratio of 1:1 to water with a mass 10 times the mass of diethylenetriamine and heat React at 70℃ for 24h to generate amino-terminated hyperbranched polymer;

[0030] Step 2: The preparation of cationic collagen copolymer: the gelatin is hydrolyzed by trypsin method, and under the protection of nitrogen, the mass ratio of methacryloxyethyltrimethylammonium chloride and water is 1:1 Mix, and then add redox initiator: tert-butyl hydroperoxide and sodium metabisulfite with a mass ratio of 3:1, wherein the redox initiator and methacryloxyethyltrimethylammonium chloride have a mass ratio The gelatin hydrolyzate is added to the gelatin hydrolysate after stirring at 50℃ for 40 minutes. The mass ratio of the gelatin hydrolysate to the methacryloxyethyltrimethylammonium chloride in the gelatin hydrolysate is 1:2. After stirring and reacting at 80°C for 90 ...

Embodiment 2

[0033] Step 1: Preparation of amino-terminated hyperbranched polymer: Add N,N-methylenebisacrylamide and diethylenetriamine with a mass ratio of 1:1.3 to water 8 times the mass of diethylenetriamine and heat React at 50℃ for 48h to generate amino-terminated hyperbranched polymer;

[0034] Step 2: The preparation of cationic collagen copolymer: the gelatin is hydrolyzed by trypsin method, and under the protection of nitrogen, the mass ratio of methacryloyloxyethyltrimethylammonium chloride and water is 1:1.5 Mix, and then add redox initiator: t-butyl hydroperoxide and sodium metabisulfite with a mass ratio of 2:1, wherein the redox initiator and methacryloxyethyl trimethylammonium chloride have a mass ratio The gelatin hydrolyzate is added to the gelatin hydrolysate after stirring at 70℃ for 50 minutes. The mass ratio of the gelatin hydrolysate to the methacryloxyethyl trimethylammonium chloride in the gelatin hydrolysate is 1:3. Stir and react for 80 minutes at 40°C to obtain a ...

Embodiment 3

[0037] Step 1: Preparation of amino-terminated hyperbranched polymer: add N,N-methylenebisacrylamide and diethylenetriamine with a mass ratio of 1:1.5 to water 15 times the mass of diethylenetriamine and heat React at 60℃ for 48h to generate amino-terminated hyperbranched polymer;

[0038] Step 2: The preparation of cationic collagen copolymer: the gelatin is hydrolyzed by trypsin method, and under nitrogen protection, the mass ratio of methacryloxyethyltrimethylammonium chloride and water is 1:1.2 Mix, and then add redox initiator: tert-butyl hydroperoxide and sodium metabisulfite with a mass ratio of 1:1, wherein the redox initiator and methacryloxyethyl trimethylammonium chloride have a mass ratio The mass ratio of gelatin hydrolysate to methacryloxyethyl trimethylammonium chloride in the gelatin hydrolysate is 1:4. Stir and react for 80 minutes at 40°C to obtain a crude product. After extraction and washing with ethanol and acetone, a cationic collagen copolymer can be obtai...

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PUM

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Abstract

The invention discloses an anionic dye fixing agent with formaldehyde removal function and a preparation method thereof. The preparation method comprises the following steps: with N,N-methylene bisacrylamide and diethylenetriamine as raw materials and water as a solvent, preparing an amino-terminated hyperbranched polymer; carrying out graft copolymerization on collagen hydrolysate liquor and a monomer to prepare a cationic collagen copolymer; and finally, compounding the prepared amino-terminated hyperbranched polymer with the cationic collagen copolymer according to a mass ratio of 1:10 to 10:1 to obtain the anionic dye fixing agent with the formaldehyde removal function. Through the compounding of the amino-terminated hyperbranched polymer and the cationic collagen copolymer, the anionic dye fixing agent with the formaldehyde removal function is prepared; when the anionic dye fixing agent with the formaldehyde removal function is used in the dyeing process, the dye-uptake and color fastness of leather can be effectively increased, and the content of formaldehyde in the leather can be decreased.

Description

Technical field [0001] The invention belongs to the technical field of leather fixing materials, and in particular relates to an anionic dye fixing agent with aldehyde removal function and a preparation method thereof. Background technique [0002] The leather dyeing process can improve its appearance, adapt it to market needs and popular styles, and increase the added value of leather. However, the nature of leather tanning and fiber determines that the dyes used in the dyeing process are mostly anionic dyes (direct dyes and acid dyes). However, direct dyes and acid dyes contain hydrophilic hydroxyl groups, sulfonic acid groups, carboxylic acid groups and Amino groups have low wet fastness in acid and alkaline solutions. For anionic water-soluble dyes, in order to improve the wet fastness, it is necessary to use a fixing agent to turn the dye into an insoluble salt, or to use a polymer fixing agent to form a transparent film on the surface of the fiber to improve the washing fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P5/08C08F289/00C08F220/34C08F226/02C08F22/38
Inventor 强涛涛高翔王学川
Owner 清远市泓旺纺织材料科技有限公司
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