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Method for preparing color fixing agent by using water-based polyurethane grafting collagen peptides

A technology of water-based polyurethane and raw protein, applied in dyeing, textiles and papermaking, etc., can solve problems such as endangering human health, and achieve the effect of not easy to fade, simple preparation process and bright color

Inactive Publication Date: 2016-11-09
仇颖超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: the color fixing agent currently used in the market is basically chemically synthesized, and its chemical composition contains a certain amount of free formaldehyde. The existence of free formaldehyde can cause skin diseases, even skin cancer, serious Harmful to human health, a method for preparing a color-fixing agent by grafting collagen peptides with water-based polyurethanes is provided. The invention first prepares water-based polyurethane prepolymers, then extracts collagen peptides from pigskin and fish swim bladder skin, and converts the collagen The protein peptide and the water-based polyurethane prepolymer react to form a covalent bond, and the water-based polyurethane is unblocked during the color-fixing treatment. The unblocked isocyanate group forms a covalent bond with the hydroxyl group on the fiber or the active hydrogen on the dye molecule, which can To achieve the effect of color fixation, collagen peptides and fibers are used to interweave to form a network. The viscosity is very good, which can firmly cover the dye and is not easy to fall off or change color, so as to improve the color fastness and improve the affinity of the fabric. Water resistance and oxidation resistance, the curing agent prepared by the invention has no formaldehyde, bright color, not easy to fade when rubbed, can effectively improve the color fastness, and the process is simple and the dyeing effect is good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] First weigh 10g of polyethylene glycol, vacuum dehydrate the polyethylene glycol at 0.09MPa and 105°C for 0.5h, put it into a three-necked flask after dehydration, and add 15g of toluene diisocyanate and 0.2g of dibutyl dilaurel into the flask Tin acid, put it into a water bath and heat up to 80°C, and keep stirring at this temperature for prepolymerization for 2 hours; after the above reaction is completed, add 1% of the total mass of reactants to the flask. Tartaric acid is a hydrophilic group and 5% of the total mass of reactants1 , 4-butanediol is a small molecule chain extender, keep stirring at 80°C for 1 hour, add 8% hydroxyethyl acrylate as a capping agent to the reaction system after reaction, and lower the temperature to 60°C for 1 hour , to obtain water-based polyurethane prepolymer after the reaction, for subsequent use; take 20g pigskin and 15g swim bladder skin respectively, remove the subcutaneous fat, wash the surface respectively, chop up and mix after c...

example 2

[0022]First weigh 13g of polyethylene glycol, vacuum dehydrate the polyethylene glycol at 0.095MPa and 108°C for 0.7h, put it into a three-necked flask after dehydration, and add 17g of toluene diisocyanate and 0.3g of dibutyl dilaurate into the flask Tin acid, put it into a water bath and heat up to 85°C, keep stirring at this temperature for prepolymerization for 3 hours; add 1.5% of the total mass of reactants to the flask after the above reaction is completed. Tartaric acid is a hydrophilic group and 5.5% of the total mass of reactants1 , 4-butanediol is a small molecule chain extender, keep stirring at 85°C for 1.5h, after the reaction, add 9% hydroxyethyl acrylate as the end-capping agent to the reaction system, and lower the temperature to 65°C for reaction 1.5h, after the reaction, the water-based polyurethane prepolymer was obtained, and it was set aside; weigh 25g of pig skin and 20g of fish maw skin, remove the subcutaneous fat, wash the surface respectively, chop up...

example 3

[0025] First weigh 15g of polyethylene glycol, vacuum dehydrate the polyethylene glycol at 0.10MPa and 110°C for 1h, put it into a three-necked flask after dehydration, and add 20g of toluene diisocyanate and 0.4g of dibutyl dilauric acid into the flask Tin, put it into a water bath and heat up to 90°C, keep stirring the prepolymerization reaction at this temperature for 4h; after the above reaction is completed, add 2% of the total mass of reactants to the flask. Tartaric acid is a hydrophilic group and 6% of the total mass of reactants 1, 4-Butanediol is a small molecule chain extender. Keep stirring at 90°C for 2 hours. After the reaction, add 10% of the total mass of hydroxyethyl acrylate into the reaction system as an end-capping agent, and lower the temperature to 70°C for 2 hours. After the reaction, the water-based polyurethane prepolymer was obtained and set aside; weigh 30g of pigskin and 25g of swim bladder skin respectively, remove the subcutaneous fat, wash the sur...

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PUM

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Abstract

The invention discloses a method for preparing a color fixing agent by using water-based polyurethane grafting collagen peptides, which belongs to the field of the color fixing agent. The method comprises the following steps: first preparing a water-based polyurethane prepolymer, extracting collagen peptides from hogskin and fish bladder skin, allowing the collagen peptides to react with the water-based polyurethane prepolymer to form covalent bonds, deblocking water-based polyurethane when the color fixing treatment is carried out, combining the unblocked isocyanate groups with hydroxyl on fibers or reactive hydrogen on dye molecules by virtue of covalent bonds to achieve the color fixing effect; and then interweaving the collagen peptides and fibers to form a net, so that the viscosity is good, dyes can be firmly wrapped and are uneasy to drop or discolor, and a purpose of improving the color fastness can be achieved. The hydrophilia and oxidation resistance can be improved. A prepared curing agent is formaldehyde-free, bright in color and uneasy to discolor in friction, so that the color fastness can be effectively improved; and moreover, the process is simple, and the dyeing effect is good.

Description

technical field [0001] The invention discloses a method for preparing a color-fixing agent by grafting collagen peptide with water-based polyurethane, and belongs to the field of color-fixing agents. Background technique [0002] In the process of textile dyeing and finishing, in order to ensure that the color fastness meets the requirements, color fixing treatment is usually carried out after dyeing to solve the problems of fading and staining. The color-fixing agents currently used in the market are basically chemically synthesized. Many color-fixing agents contain a certain amount of free formaldehyde in their chemical composition. The existence of free formaldehyde can cause skin diseases, even skin cancer, and seriously endanger human health. Even if the color fixing agent does not contain formaldehyde, it still has certain harm to the human body. [0003] The raw material of animal glue color fixing agent is directly extracted from the skin, tendon and swim bladder of...

Claims

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Application Information

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IPC IPC(8): D06P1/52D06P1/46D06P3/60C08G18/66C08G18/48C08G18/32C08G18/10
CPCD06P1/5285C08G18/10C08G18/4833C08G18/6674D06P1/46D06P3/6008
Inventor 仇颖超王统军
Owner 仇颖超
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