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Environment-friendly tanning agent for improving tanning effect of raw hide

An environmentally friendly, tanning technology, applied in small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, tanning treatment, etc. It can improve the market prospect and economic value, and improve the tensile strength.

Inactive Publication Date: 2018-10-23
HEFEI SHENGDA GARMENT ACCESSORIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the commonly used tanning agents are chrome tanning agents, zirconium tanning agents and other metal complex tanning agents, which are used in large amounts, are very unfriendly to the environment and human body, are difficult to degrade, and have high processing costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] An environment-friendly tanning agent for improving the tanning effect of raw hides, which is made of the following ingredients in parts by weight: 3.0 parts of sodium lignosulfonate, 5.0 parts of 1,4-butanediol, 1.5 parts of bromocresol, and di-n-butylamine 1.7 parts, 1.0 parts of dimethylol propionic acid, 1.4 parts of nitrogen methyl pyrrolidone, 12 parts of ethylenediamine, 2.0 parts of hydrochloric acid solution, 70 parts of alkaline dispersion, 300 parts of water; the preparation method of the alkaline dispersion Include the following steps:

[0017] (1) Weigh 18ml of coconut oil and 5.5g of sodium chloride into a beaker, add 260ml of sodium bicarbonate aqueous solution, heat to 50°C, add 1.5g of aminopropyl betaine and 1.0g of AES while stirring, and continue Stir and disperse for 50 minutes;

[0018] (2) Add 4.5 grams of maleic anhydride to the dispersion liquid, heat up to 70°C under stirring, and carry out the reaction. The reaction time is 1.5 hours. After t...

Embodiment 2

[0024] An environment-friendly tanning agent for improving the tanning effect of raw hides, which is made of the following ingredients in parts by weight: 3.3 parts of sodium lignosulfonate, 5.5 parts of 1,4-butanediol, 1.6 parts of bromocresol, and di-n-butylamine 1.8 parts, 1.3 parts of dimethylol propionic acid, 1.5 parts of nitrogen methyl pyrrolidone, 13 parts of ethylenediamine, 2.5 parts of hydrochloric acid solution, 75 parts of alkaline dispersion, 330 parts of water; the preparation method of the alkaline dispersion Include the following steps:

[0025] (1) Weigh 19ml of coconut oil and 5.8g of sodium chloride into a beaker, add 280ml of sodium bicarbonate aqueous solution, heat to 55°C, add 1.6g of aminopropyl betaine and 1.1g of AES while stirring, and continue Stir and disperse for 55 minutes;

[0026] (2) Add 5.0 grams of maleic anhydride to the dispersion, heat up to 75°C under stirring, and react for 1.8 hours. After the reaction, use ammonia water to adjust t...

Embodiment 3

[0032] An environment-friendly tanning agent for improving the tanning effect of raw hides, which is made of the following ingredients in parts by weight: 33.5 parts of sodium lignosulfonate, 6.0 parts of 1,4-butanediol, 1.8 parts of bromocresol, and di-n-butylamine 2.0 parts, 1.5 parts of dimethylol propionic acid, 1.7 parts of nitrogen methyl pyrrolidone, 15 parts of ethylenediamine, 3.0 parts of hydrochloric acid solution, 80 parts of alkaline dispersion, 350 parts of water; the preparation method of the alkaline dispersion Include the following steps:

[0033] (1) Weigh 20ml of coconut oil and 6.0g of sodium chloride into a beaker, add 300ml of sodium bicarbonate aqueous solution, heat to 60°C, add 1.8g of aminopropyl betaine and 1.2g of AES while stirring, and continue Stir and disperse for 60 minutes;

[0034] (2) Add 5.5 grams of maleic anhydride to the dispersion liquid, heat up to 80°C under stirring, and carry out the reaction. The reaction time is 2.0 hours. After ...

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Abstract

The invention relates to the technical field of clothes, shoe and cap processing and manufacturing and discloses an environment-friendly tanning agent for improving the tanning effect of raw hide. Theprepared tanning agent can have a permanent degeneration reaction with collagen structure functional groups in the raw hide to enable collagen to be modified, and a structural stable cross-linked network is formed. The leather is made soft through the cross-linked network, has elasticity and can resist high temperature and high humidity. The properties of the leather are kept invariable under theaction of a chemical reagent, and the tensile strength of the leather is remarkably improved. Waste liquid obtained after tanning treatment is easily degradable without harm to the environment and humans. The tanning agent is friendly to environment. Through the environment-friendly tanning agent, the market outlook and economic value of leather processing are remarkably improved; the practical significance in the study on animal raw hide and expansion on leather processing quality raw materials can be realized and deepened; and the environment-friendly tanning agent belongs to the technicalscheme extremely worthy of application and popularization.

Description

technical field [0001] The invention belongs to the technical field of processing and manufacturing clothing, shoe and hat materials, and in particular relates to an environment-friendly tanning agent for improving the tanning effect of raw hides. Background technique [0002] "Genuine leather" is a common word in the leather products market, and it is a customary name for natural leather to distinguish synthetic leather. In the minds of consumers, "genuine leather" also has a non-fake meaning. Animal leather is a kind of natural leather, which is what we often call genuine leather. It is a leather material with various characteristics, strength, hand feeling, color and pattern made from animals (raw hide) after tanning and processing in a leather factory. It is an essential material for modern leather products. The processing process of genuine animal leather is very complicated, and dozens of processes are required to make finished leather: rawhide-soaking-fleshing-degre...

Claims

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Application Information

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IPC IPC(8): C14C3/24C14C3/04C14C3/08
CPCC14C3/24C14C3/04C14C3/08
Inventor 郭运松
Owner HEFEI SHENGDA GARMENT ACCESSORIES CO LTD
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