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Leather tanning agent and preparation method thereof

A technology for tanning agent and leather, applied in the field of leather tanning agent and its preparation, can solve the problems of rough grain surface and hard body of finished leather, and achieve the effects of improving filling performance, increasing shrinkage temperature, and soft and plump hand feeling.

Active Publication Date: 2017-11-07
阳信华阳集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a leather tanning agent and its preparation method in view of the defects that the currently prepared leather tanning agent has the defects of making the finished leather body hard and the grain surface rough

Method used

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  • Leather tanning agent and preparation method thereof

Examples

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Effect test

example 1

[0022] Take 20g of polyether diol with a molecular weight of 1000 and 300mL of toluene into a three-necked flask equipped with a thermometer and a reflux device, then add 50g of acrylic acid, and move the three-necked flask into a digital speed measuring constant temperature magnetic stirrer. , at a speed of 300r / min, stir and mix for 3min, then add 0.1mL sulfuric acid solution with a mass fraction of 96%, keep warm and stir for 3h, after the reaction is over, put the product in a rotary evaporator and concentrate for 30min , to obtain a concentrated solution, add the concentrated solution and 200mL water into a three-necked flask with a thermometer and a reflux device, place the flask in a water bath, control the temperature of the water bath to 60°C, and then add 50g of methacrylic acid and 0.1g sodium persulfate, heat preservation and stirring reaction 60min, obtain polyether glycol branched acrylic resin, finally by weight, get 30 parts of polyether glycol branched acrylic ...

example 2

[0024] Take 20g of polyether diol with a molecular weight of 1000 and 300mL of toluene into a three-necked flask equipped with a thermometer and a reflux device, then add 50g of acrylic acid, and move the three-necked flask into a digital speed measuring constant temperature magnetic stirrer. , at a speed of 300r / min, stir and mix for 3min, then add 0.1mL sulfuric acid solution with a mass fraction of 96%, keep warm and stir for 3h, after the reaction is over, put the product in a rotary evaporator and concentrate for 30min , to obtain a concentrated solution, add the concentrated solution and 200mL water into a three-necked flask with a thermometer and a reflux device, place the flask in a water bath, control the temperature of the water bath to 60°C, and then add 50g of methacrylic acid and 0.1g lauroyl peroxide, insulated and stirred for 60 minutes to obtain a polyether glycol branched acrylic resin, and graphite oxide was added to a freeze pulverizer to pulverize, and passe...

example 3

[0026]Take 30g of polyether diol with a molecular weight of 1000 and 400mL of toluene into a three-necked flask equipped with a thermometer and a reflux device, then add 60g of acrylic acid, and move the three-necked flask into a digital speed measuring constant temperature magnetic stirrer. , under the condition that the rotating speed is 400r / min, after stirring and mixing for 5min, add 0.3mL sulfuric acid solution with a mass fraction of 96%, and keep stirring for 4h. , to obtain a concentrated solution, add the concentrated solution and 300mL water into a three-necked flask with a thermometer and a reflux device, place the flask in a water bath, control the temperature of the water bath to 70°C, and then add 60g of methacrylic acid and 0.3g potassium persulfate, insulated stirring reaction 90min, obtains polyether glycol branched acrylic resin, graphite oxide is added in the freezing pulverizer and pulverizes, and crosses 100 mesh sieves, obtains graphite oxide powder, gets...

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Abstract

The invention discloses a leather tanning agent and a preparation method thereof, and belongs to the technical field of leather machining. The leather tanning agent comprises, by weight, 30-40 parts of polyetherdiolbranchedacrylicresin, 15-20 parts of modified grapheneoxide, 3-5 parts of aluminum citrate, 1-3 parts of sodium hexametaphosphate and 50-60 parts of water. The leather tanning agent is combined by adopting specific components, especially polyetherdiolbranchedacrylicresin, flexiblebranchedpolyetherdiol is led into polyacrylic acid to improve the selecting and filling property of acrylicresin, the sense of water and elasticity of leather are improved, then polyetherdiolbranchedacrylicresin, an aluminium tanning agent, modified grapheneoxide and the like are matched and used, the leather softness is improved, meanwhile, the leather grain flat is fine and smooth, the leather contraction temperature can be improved, the leather tanning agent is suitable for tanning of various leather, and the good application prospect is achieved.

Description

technical field [0001] The invention relates to a leather tanning agent and a preparation method thereof, belonging to the technical field of leather processing. Background technique [0002] Leather tanning agents are one of the most important chemicals in the leather industry. Commonly used tanning agents include chrome tanning agents, aluminum tanning agents, vegetable tanning agents, aldehyde tanning agents and synthetic tanning agents. [0003] Chrome tanning agent is the tanning agent with the best tanning effect at present. The chrome tannin will form a strong cross-linking effect through the interaction with the amino and carboxyl groups on the collagen fibers, and improve the moisture and heat resistance, tensile and tear resistance of the leather. However, in the process of chrome tanning, a large amount of chromium-containing wastewater, chromium-containing sludge, chromium-containing waste and other pollution problems that are difficult to control will be produce...

Claims

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Application Information

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IPC IPC(8): C14C3/02
Inventor 王海霞宋玲
Owner 阳信华阳集团有限公司
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