Preparation method of green and environmental protection tanning agent

A green and environmentally friendly tanning agent technology, applied in the field of preparation of green and environmentally friendly tanning agents, can solve the problems of aluminum tanned leather not being washable, low shrinkage temperature, limited development, etc., to achieve difficult detanning, high viscosity and water solubility , Improve the effect of water resistance

Inactive Publication Date: 2016-04-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, aluminum tanned leather is not washable, the shrinkage temperature is not high, only 70°C-85°C, and it is easy to detannize, which limits its development in various industries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation method of green environment-friendly tanning agent of the present invention comprises the following steps:

[0017] Weigh starch, deionized water A, sodium bisulfite, CMC, SDS, silicone oil, op-10, mercaptan and NaOH solution, and then starch, deionized water A, sodium bisulfite, CMC, SDS, silicone oil, Add op-10, mercaptan and NaOH solution into the flask, heat up to 60°C while stirring, then add hydrogen peroxide A, stir at constant temperature for 30 minutes, heat up to 94°C for gelatinization for 90 minutes, then cool down to 85°C, add HCL Add the initiator and monomer dropwise, stir and react at a constant temperature for 120 minutes, then cool to room temperature to obtain a green and environmentally friendly tanning agent;

[0018] The ratio of starch, deionized water A, sodium bisulfite, CMC, SDS, silicone oil, op-10, mercaptan, NaOH solution, hydrogen peroxide A and HCL is 12g: 20ml: 0.6g: 0.1g: 0.17g: 0.2ml : 0.7ml: 0.1ml: 3ml: 1g: 3ml;

[00...

Embodiment 2

[0022] The preparation method of green environment-friendly tanning agent of the present invention comprises the following steps:

[0023] Weigh starch, deionized water A, sodium bisulfite, CMC, SDS, silicone oil, op-10, mercaptan and NaOH solution, and then starch, deionized water A, sodium bisulfite, CMC, SDS, silicone oil, Add op-10, mercaptan and NaOH solution into the flask, heat up to 50°C while stirring, then add hydrogen peroxide A, stir at constant temperature for 60 minutes, heat up to 98°C for gelatinization for 30 minutes, then cool down to 75°C, add HCL Then add initiator and monomer dropwise, stir and react at constant temperature for 60 minutes, then cool to room temperature to obtain green environmental protection tanning agent;

[0024] The ratio of starch, deionized water A, sodium bisulfite, CMC, SDS, silicone oil, op-10, mercaptan, NaOH solution, hydrogen peroxide A and HCL is 6g: 40ml: 0.2g: 0.3g: 0.14g: 0.8ml : 0.2ml: 0.3ml: 1ml: 4g: 1ml;

[0025] The i...

Embodiment 3

[0028] The preparation method of green environment-friendly tanning agent of the present invention comprises the following steps:

[0029] Weigh starch, deionized water A, sodium bisulfite, CMC, SDS, silicone oil, op-10, mercaptan and NaOH solution, and then starch, deionized water A, sodium bisulfite, CMC, SDS, silicone oil, Add op-10, mercaptan and NaOH solution into the flask, heat up to 52°C while stirring, then add hydrogen peroxide A, stir at constant temperature for 34 minutes, heat up to 95°C for gelatinization for 40 minutes, then cool down to 78°C, add HCL Then add initiator and monomer dropwise, stir and react at constant temperature for 80 minutes, then cool to room temperature to obtain green environmental protection tanning agent;

[0030] The ratio of starch, deionized water A, sodium bisulfite, CMC, SDS, silicone oil, op-10, mercaptan, NaOH solution, hydrogen peroxide A and HCL is 7g: 25ml: 0.3g: 0.2g: 0.15g: 0.5ml : 0.4ml: 0.2ml: 2ml: 3g: 3ml;

[0031] The i...

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Abstract

The invention discloses a preparation method of a green and environmental protection tanning agent, comprising the following steps: weighing starch, deionized water, sodium hydrogen sulfite, CMC, SDS, silicone oil, op-10, sulfur alcohol and NaOH solution, adding the starch, the deionized water A, sodium hydrogen sulfite, CMC, SDS, the silicone oil, op-10, sulfur alcohol and the NaOH solution to a flask, heating to 50-60 DEG C while stirring, then adding hydrogen peroxide A, heating to 94-98 DEG C after constant temperature stirring for reaction, then cooling to 75-85 DEG C, adding HCL and then dropwise adding an initiator and a monomer, and cooling to room temperature after constant temperature stirring for reaction, thus obtaining the green and environmental protection tanning agent. The green and environmental protection tanning agent prepared according to the method disclosed by the invention can effectively improve the water resistance and shrinking temperature of leather, and de-tanning is not easy to cause.

Description

technical field [0001] The invention belongs to the application field of tanning agents and relates to a preparation method of a green and environment-friendly tanning agent. Background technique [0002] At present, the tanning agent in the leather industry is mainly chrome tanning agent. It is well known that chromium is poisonous and has serious pollution to the environment. Today, as environmental protection is increasingly valued, clean tanning has become the key to the sustainable development of the leather industry. Therefore, tanning agents with excellent performance and environmental protection The development of new chrome-free tanning agents has become a current research hotspot. Starch is a good filler and has been used in tanning. However, because it is easy to mildew, it can be used to fill leather after proper modification to improve its stability, and the resulting leather is soft and plump. Aluminum tanned leather is pure white, soft, fine and firm grain, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/10C14C9/04C14C3/02C08F251/00C08F220/56C08F220/06
CPCC14C3/10C08F251/00C14C3/02C14C9/04
Inventor 李运涛张婧郭雯苏秀霞杨晶晶崔明张祎张海宁张亚男杨冬
Owner SHAANXI UNIV OF SCI & TECH
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