A highly efficient degreasing agent for natural leather

A technology of natural leather and degreasing agent, applied in leather degreasing, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, etc. Cleaning, complex sewage composition and other problems, to achieve the effect of mild chemical properties, reduce cleaning water consumption, and reduce pollution

Active Publication Date: 2021-02-12
嘉兴宏麟皮化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, a single surfactant cannot meet such use requirements, and compound surfactants have the problems of large foam generation and complicated sewage components, which is not conducive to subsequent leather cleaning and sewage treatment.

Method used

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  • A highly efficient degreasing agent for natural leather
  • A highly efficient degreasing agent for natural leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Mix 10g of water treatment grade polyglutamic acid and 3g of poloxamer 188, add water to dissolve, and add dropwise dilute sulfuric acid to adjust the pH value of the solution to 4-5, then heat to reflux state and keep stirring, after the reaction Concentrate under reduced pressure to make a paste with a solid content of 75-85%. After the paste is naturally cooled to room temperature, it is sent to a freeze dryer. Poloxamer esters;

[0024] (2) Add the prepared polyglutamic acid-poloxamer ester compound, 10g PEG-60 hydrogenated castor oil, 5g sodium lauroyl glutamate, 2g polyethylene oxide, 3g chitosan to 20g decyl glucoside Sugar quaternary ammonium salt, 1g of hydrolyzed polymaleic anhydride and 0.5g of ethylenediaminetetraacetic acid disodium salt are thoroughly mixed and then ball milled in a ball mill until the output particle size is less than 30 μm to obtain a degreasing agent.

Embodiment 2

[0026] (1) Mix 10g of water treatment grade polyglutamic acid and 5g of poloxamer 188, add water to dissolve, and add dropwise dilute sulfuric acid to adjust the pH value of the solution to 4-5, then heat to reflux state and keep stirring, after the reaction Concentrate under reduced pressure to make a paste with a solid content of 75-85%. After the paste is naturally cooled to room temperature, it is sent to a freeze dryer. Poloxamer esters;

[0027] (2) Add the prepared polyglutamic acid-poloxamer ester compound, 15g PEG-60 hydrogenated castor oil, 8g sodium lauroyl glutamate, 3g polyethylene oxide, 2g chitosan to 15g decyl glucoside Sugar quaternary ammonium salt, 1g of hydrolyzed polymaleic anhydride and 0.5g of ethylenediaminetetraacetic acid disodium salt are thoroughly mixed and then ball milled in a ball mill until the output particle size is less than 30 μm to obtain a degreasing agent.

Embodiment 3

[0029] (1) Mix 10g of water treatment grade polyglutamic acid and 5g of poloxamer 188, add water to dissolve, and add dropwise dilute sulfuric acid to adjust the pH value of the solution to 4-5, then heat to reflux state and keep stirring, after the reaction Concentrate under reduced pressure to make a paste with a solid content of 75-85%. After the paste is naturally cooled to room temperature, it is sent to a freeze dryer. Poloxamer esters;

[0030] (2) Add the prepared polyglutamic acid-poloxamer ester compound, 15g PEG-60 hydrogenated castor oil, 8g sodium lauroyl glutamate, 3g polyethylene oxide, 2g chitosan to 15g decyl glucoside Sugar quaternary ammonium salt, 1g of hydrolyzed polymaleic anhydride and 0.5g of ethylenediaminetetraacetic acid disodium salt are thoroughly mixed and then ball milled in a ball mill until the output particle size is less than 30 μm to obtain a degreasing agent.

[0031] Modification of polyethylene oxide: first add 50g of hot water at 60-70°...

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Abstract

The invention discloses a high-efficiency degreasing agent specially used for natural leather, relates to the technical field of leather processing, and comprises the following raw materials in parts by weight: 15-20 parts of decyl glucoside, 10-15 parts of PEG-60 hydrogenated castor oil, laurel Sodium acyl glutamate 5‑10 parts, water treatment grade polyglutamic acid 5‑10 parts, poloxamer 188 1‑5 parts, polyethylene oxide 1‑5 parts, chitosan quaternary ammonium salt 1‑5 parts 0.5-3 parts of hydrolyzed polymaleic anhydride, 0.1-1 parts of disodium edetate. The degreasing rate of the degreasing agent prepared by the present invention reaches more than 80%, and it is a low-foaming degreasing agent. After being dissolved in water, only a small amount of foam is produced, thereby reducing the amount of subsequent cleaning water; at the same time, the degreasing agent is mild in chemical properties and will not damage Fiber structure of natural leather.

Description

Technical field: [0001] The invention relates to the technical field of leather processing, in particular to a high-efficiency degreasing agent specially used for natural leather. Background technique: [0002] In the process of leather processing, since there is a certain amount of fat in natural leather, if it is not degreased, it will hinder the penetration of tanning process materials into the leather, and the fatty acids generated by the hydrolysis of oil will react with metal ions to form water-insoluble Metallic soap salts, not conducive to dyeing treatments. Therefore, the degreasing process is a crucial process in the processing of natural leather. [0003] Emulsification degreasing is the most widely used degreasing method in the leather industry, also known as surfactant degreasing, and the use of surfactant degreasing agents can remove more than 90% of the oil from raw hides. However, leather degreasing not only removes the grease on the surface of the hide, bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C5/00
CPCC14C5/00
Inventor 周忠达周妮频
Owner 嘉兴宏麟皮化有限公司
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