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Leather tanning agent and preparing 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 complex preparation method, unenvironmental protection of leather tanning agent, poor tanning effect, etc., and achieve the effects of soft hand feeling, high tanning efficiency and plump surface.

Active Publication Date: 2016-12-07
福建新隆上超纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, in view of the above content, the present invention provides a leather tanning agent and a preparation method thereof, which solve the problems of the prior art leather tanning agents being not environmentally friendly, having poor tanning effects, and complicated preparation methods.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A leather tanning agent, comprising the following raw materials in parts by weight: 10 parts of graphene oxide, 90 parts of modified starch, 50 parts of 3-aminopropyltriethoxysilane, and 30 parts of 3,4-ethylenedioxythiophene.

[0018] Its preparation method comprises the following processing steps:

[0019] (1) Preparation of graphene oxide dispersion liquid: add sodium nitrate, concentration to the concentrated sulfuric acid of 98% in graphite powder, stir, temperature is controlled at 1 ℃ during stirring, add potassium permanganate after stirring for 5min, slowly heat up to 36 ℃, stir while raising the temperature, keep the reaction for 5h when the temperature rises to 36℃, then add deionized water dropwise, the dropping time of deionized water is controlled at 20min, then raise the temperature to 60℃, react for 30min, add dropwise hydrogen oxidation Sodium solution, wait for the solution to turn golden yellow, then react for 30 minutes, then centrifuge, precipitate,...

Embodiment 2

[0024] A leather tanning agent, comprising the following raw materials in parts by weight: 13 parts of graphene oxide, 102 parts of modified starch, 60 parts of 3-aminopropyltriethoxysilane, and 36 parts of 3,4-ethylenedioxythiophene.

[0025] A preparation method of a leather tanning agent, comprising the following processing steps:

[0026] (1) Preparation of graphene oxide dispersion liquid: add sodium nitrate, concentration to the concentrated sulfuric acid of 98% in graphite powder, stir, temperature is controlled at 2 ℃ during stirring, add potassium permanganate after stirring 7min, slowly heat up to 38 ℃, stir while raising the temperature, keep the reaction for 5.5h when the temperature rises to 38℃, then add deionized water dropwise, the dropping time of deionized water is controlled at 22min, then raise the temperature to 63℃, react for 33min, then add hydrogen dropwise Sodium oxide solution, wait for the solution to turn golden yellow, then react for 33 minutes, th...

Embodiment 3

[0031] A leather tanning agent, comprising the following raw materials in parts by weight: 15 parts of graphene oxide, 110 parts of modified starch, 65 parts of 3-aminopropyltriethoxysilane, and 40 parts of 3,4-ethylenedioxythiophene.

[0032] Its preparation method comprises the following processing steps:

[0033] (1) Preparation of graphene oxide dispersion liquid: add sodium nitrate, concentrated sulfuric acid with a concentration of 98% to the graphite powder, stir, the temperature is controlled at 4°C during stirring, add potassium permanganate after stirring for 10min, and slowly heat up to 40°C ℃, stir while raising the temperature, keep the reaction for 6h when the temperature rises to 40℃, then add deionized water dropwise, the dropping time of deionized water is controlled at 25min, then raise the temperature to 65℃, react for 35min, add dropwise hydrogen oxidation Sodium solution, wait for the solution to turn golden yellow, then react for 35 minutes, then centrifu...

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PUM

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Abstract

The invention relates to the field of leather processing reagents, and provides a leather tanning agent and a preparing method thereof. The problems that in the prior art, a leather tanning agent is not environment-friendly, the tanning effect is poor, and the preparing method is complex are solved. The leather tanning agent comprises following raw materials including, by weight, 10-15 parts of oxidized graphene, 90-110 parts of modified starch, 50-65 parts of (3-aminopropyl)-trimethoxysilane and 30-40 parts of 3,4-ethylenedioxythiophene.

Description

technical field [0001] The invention relates to the field of leather processing reagents, in particular to a leather tanning agent and a preparation method thereof. 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. Chrome tanning agent is the tanning agent with the best tanning effect at present, but it will produce pollution problems that are difficult to control; aluminum tanning agent has a flat and thin leather with low strength; Restricted; Synthetic tanning agents are mostly aldehyde-containing tanning agents or acrylic resin retanning agents. Although the finished leather with aldehyde-containing tanning agents is soft and fine-grained, the leather is flat and thin, and it is prone to yellowing after prolonged storage, and it will also pro...

Claims

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Application Information

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IPC IPC(8): C14C3/22C14C3/08
Inventor 孙卫东
Owner 福建新隆上超纤有限公司
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