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
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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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