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Preparation method of sericin-grape seed polysaccharide composite leather brightener

A technology of polysaccharide compounding and sericin protein, which is applied in leather surface treatment, chemical instruments and methods, small leather/big leather/leather/fur treatment, etc., can solve problems such as pulp cracking and poor resistance to wet rubbing, and achieve good performance. Compatibility, high chemical stability, effect of reducing content

Inactive Publication Date: 2018-12-14
苏州华龙化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficult to form a film alone, prone to cracking, poor wet rub resistance, etc.

Method used

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  • Preparation method of sericin-grape seed polysaccharide composite leather brightener

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Experimental program
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Effect test

Embodiment 1

[0012] A preparation method of sericin grape seed polysaccharide composite leather brightener, including the following steps:

[0013] S1. Add grape seed powder to deionized water at a solid-to-liquid ratio of 1:10, put it in a 50℃ water bath for 10 hours, then add the supernatant liquid to 3 times the volume of absolute ethanol and let it stand for 20 hours, then add 5000r Centrifugation for 10 minutes per minute, the precipitate is grape seed polysaccharide;

[0014] S2. Cut the cocoon shell into small pieces, and then weigh Na according to 0.5‰ of the weight of the cocoon shell 2 CO 3 , And then degummed the cocoon shell at 100℃ for 180 minutes at a water bath ratio of 1:50, filtered to obtain the sericin solution, and then put the sericin solution into a dialysis bag, dialyzed in flowing deionized water for 48 hours, and then the dialyzed silk The glue solution was concentrated to obtain 0.8g / mL sericin solution;

[0015] S3. Heat TDI and polyether glycol to 50℃ for 2h, then add...

Embodiment 2

[0019] A preparation method of sericin grape seed polysaccharide composite leather brightener, including the following steps:

[0020] S1. Add grape seed powder to deionized water at a solid-to-liquid ratio of 1:10, put it in a 60℃ water bath for 30 hours, and then add 5 times the volume of absolute ethanol to the supernatant and let it stand for 12 hours. Centrifugation for 5 min per min, the precipitate is grape seed polysaccharide;

[0021] S2. Cut the cocoon shell into small pieces, and then weigh Na according to 0.5‰ of the weight of the cocoon shell 2 CO 3 , And then degummed the cocoon shell at 90℃ for 60 minutes at a water bath ratio of 1:100, filtered to obtain the sericin solution, then put the sericin solution into a dialysis bag, dialyzed in flowing deionized water for 48 hours, and then the dialyzed silk The glue solution is concentrated to obtain 1.2g / mL sericin solution;

[0022] S3. Mix TDI and polyether glycol and heat to 50℃ for 2h, then add dimethylolpropionic aci...

Embodiment 3

[0026] A preparation method of sericin grape seed polysaccharide composite leather brightener, including the following steps:

[0027] S1. Add grape seed powder to deionized water at a solid-to-liquid ratio of 1:10, put it in a 50℃ water bath and react for 30 hours, then add the supernatant liquid to 3 times the volume of absolute ethanol and let it stand for 16 hours. Centrifugation for 10 minutes per minute, the precipitate is grape seed polysaccharide;

[0028] S2. Cut the cocoon shell into small pieces, and then weigh Na according to 0.5‰ of the weight of the cocoon shell 2 CO 3 , And then degummed the cocoon shell at 90℃ for 90 minutes at a water bath ratio of 1:50, filtered to obtain the sericin solution, then put the sericin solution into a dialysis bag, dialyzed in flowing deionized water for 48 hours, and then the dialyzed silk The glue solution was concentrated to obtain 0.8g / mL sericin solution;

[0029] S3. Mix TDI and polyether glycol and heat to 50℃ for 2h, then add di...

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Abstract

The invention provides a preparation method of a sericin-grape seed polysaccharide composite leather brightener. The preparation method comprises the following steps: S1, preparing grape seed polysaccharide; S2, preparing a sericin solution; S3, preparing a sericin-grafted polyurethane emulsion; S4, weighing the following components in parts by weight: the sericin solution, the sericin-grafted polyurethane emulsion, the grape seed polysaccharide, linoleic acid, tripolyglycerol monostearate, glycerol and caprolactam-modified casein; S5, adding the linoleic acid and the tripolyglycerol monostearate into the sericin solution, heating, uniformly stirring, then adding the grape seed polysaccharide, the glycerol and the caprolactam-modified casein, then performing a microwave reaction, then adding the sericin-grafted polyurethane emulsion, and mixing by uniformly stirring. According to the preparation method provided by the invention, the sericin and the polysaccharide are compounded to serve as the brightener, so that the using amount of the casein is reduced or the casein is replaced; a novel way is opened up for research of the leather brightener.

Description

Technical field [0001] The invention relates to the field of brighteners, in particular to a preparation method of a sericin grape seed polysaccharide composite leather brightener. Background technique [0002] In the leather industry, it is generally necessary to use chemical materials and undergo certain physical and chemical treatments to make the leather surface shiny. The finishing materials that can give the leather surface gloss are usually called brighteners. Natural protein as a finishing material is brittle and hard, without toughness, which is close to the level of similar modified casein products abroad. It is difficult to form a film alone, easy to produce cracks, and has poor wet rub resistance. Sericin is an important component in raw silk, which affects the performance of silk fabrics. Sericin accounts for about 25% of the mass of the cocoon layer, which protects and adheres silk fibroin. It is a globular protein with polar side chain amino acids accounting for...

Claims

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Application Information

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IPC IPC(8): C09G1/16C09G1/14C14C11/00
CPCC09G1/14C09G1/16C14C11/003C14C11/006
Inventor 吴建平
Owner 苏州华龙化工有限公司