Water-soluble octacarboxyl silsesquioxane tanning agent prepared by mercaptan-alkene click chemistry process and method thereof

A technology of silicone tanning agent and silsesquioxane, which is applied in the field of water-soluble octacarboxysilsesquioxane tanning agent to achieve the effects of high speed, good water solubility and wide application range

Active Publication Date: 2017-11-14
广州麦吉高分子新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in recent years, with the increasing environmental problems of chrome tanning and the strategic consideration of chrome resources, chrome tanning agents and chrome tanning methods have faced severe challenges.

Method used

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  • Water-soluble octacarboxyl silsesquioxane tanning agent prepared by mercaptan-alkene click chemistry process and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Add 33mL of vinyltrimethoxysilane into a 1000mL three-necked flask at 35°C, then add 337mL of acetone, and place in a water bath equipped with a condenser and a heating stirrer. Slowly add the diluted hydrochloric acid into the flask, reflux and stir at 35°C for 40h, wash the product with 66mL of absolute ethanol for 3 times after the reaction, and then vacuum-dry it at 45°C for 48h to obtain white powdery cage-type Vinyl silsesquioxane; then dissolve the cage-type octavinyl silsesquioxane with an appropriate amount of dichloromethane, and wait for the solvent to evaporate for a certain period of time to form a homogeneous saturated solution and crystallize a white solid.

[0045] Weigh 0.2132g of cage-type octavinylsilsesquioxane and 0.2764g of mercaptoacetic acid and dissolve them in dichloromethane to form a colorless, transparent and clear solution. Then add 0.0048g of 1wt% photoinitiator benzoin dimethyl ether, place it in a conical flask, irradiate for 5min under ...

Embodiment 2

[0047]Add 45mL of vinyltrimethoxysilane into a 1000mL three-necked flask at 45°C, then add 337mL of acetone, and place in a water bath equipped with a condenser and a heating stirrer. Slowly add diluted hydrochloric acid into the flask, reflux and stir at 45°C for 40h, after the reaction, wash the product with 66mL of absolute ethanol for 3 times, and then vacuum-dry it at 45°C for 48h to obtain a white powdery cage Vinyl silsesquioxane; then dissolve the cage-type octavinyl silsesquioxane with an appropriate amount of dichloromethane, and wait for the solvent to evaporate for a certain period of time to form a homogeneous saturated solution and crystallize a white solid.

[0048] Weigh 0.2132g of vinyl silsesquioxane and 0.2764g of mercaptoacetic acid and dissolve them in dichloromethane to form a colorless transparent clear solution. Then add 0.0048g of 1wt% photoinitiator benzoin dimethyl ether, place it in a conical flask, irradiate for 5min under an ultraviolet lamp, and ...

Embodiment 3

[0050] Add 33mL of vinyltrimethoxysilane into a 1000mL three-neck flask at 40°C, then add 337mL of acetone, and place in a water bath equipped with a condenser and a heating stirrer. Slowly add diluted hydrochloric acid into the flask, reflux and stir at 35°C for 40h, after the reaction, wash the product with 66mL of absolute ethanol three times, and then vacuum-dry at 45°C for 48h to obtain a white powdered cage Vinyl silsesquioxane; then dissolve the cage-type octavinyl silsesquioxane with an appropriate amount of dichloromethane, and wait for the solvent to evaporate for a certain period of time to form a homogeneous saturated solution and crystallize a white solid.

[0051] Weigh 0.2132g of cage-type octavinylsilsesquioxane and 0.2764g of mercaptoacetic acid and dissolve them in dichloromethane to form a colorless, transparent and clear solution. Then add 0.0048g of 1wt% photoinitiator benzoin dimethyl ether, place it in a conical flask, irradiate for 5min under an ultravi...

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Abstract

The invention relates to a water-soluble octacarboxyl silsesquioxane tanning agent prepared by mercaptan-alkene click chemistry process and a method thereof. The method comprises the following steps: firstly preparing octavinyl-polyhedral oligomeric silsesquioxane by using vinyl trimethoxy silane through a hydrolysis condensation method, then reacting octavinyl-polyhedral oligomeric silsesquioxane with mercaptoacetic acid under the condition with photoinitiators and irradiation of ultraviolet lamps to obtain the water-soluble octacarboxyl silsesquioxane tanning agent. The water-soluble octacarboxyl silsesquioxane tanning agent is high in yield and high in purity; the reaction process is easy to control and operate; the reaction time is short; the tanning agent has a certain tanning effect; when the tanning agent cooperating with 2% chromium powder is applied to a tanning process of pickled goat skin, the shrinkage temperature of the tanned crust leather is increased by 35 DEG C; the thickening rate reaches about 67%.

Description

technical field [0001] The invention relates to the technical field of leather tanning agent synthesis, in particular to a water-soluble octacarboxysilsesquioxane tanning agent prepared based on a thiol-ene click chemistry method and a method thereof. Background technique [0002] With the improvement of people's living standards, leather products have gradually become an indispensable necessity in today's life. Hundreds of leather chemicals are used in the process of leather processing. These materials are very important for obtaining leather with excellent performance. Chemical material with flexibility, high strength, water resistance, heat resistance, corrosion resistance and chemical stability. At present, the tanning agent used in tanning is mainly chrome tanning agent. The comprehensive performance of chrome tanning agent tanning leather is unmatched by other inorganic tanning agents, synthetic tanning agents and vegetable tanning agents. However, with the sudden in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/08
CPCC14C3/08
Inventor 高党鸽王平平吕斌马建中
Owner 广州麦吉高分子新材料科技有限公司
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