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Efficient degreasant special for natural leather

A technology of natural leather and degreasing agent, which is applied in leather degreasing, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc. It can solve the complex composition of sewage and the amount of foam generated Large, unfavorable leather cleaning and other problems, to achieve the effect of reducing pollution, mild chemical properties, and reducing cleaning water consumption

Active Publication Date: 2018-10-12
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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  • Efficient degreasant special for natural leather
  • Efficient degreasant special 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, then add water to dissolve, and add dilute sulfuric acid dropwise to adjust the pH of the solution to 4-5, and then heat to reflux and keep stirring. After concentrating under reduced pressure, a paste with a solid content of 75-85% is made. After the paste is naturally cooled to room temperature, it is sent to a freeze dryer. The dried solid is made into a micronized powder, namely, polyglutamic acid- Poloxamer esters;

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

Embodiment 2

[0026] (1) Mix 10g of water treatment grade polyglutamic acid and 5g of Poloxamer 188 and dissolve in water, and add dilute sulfuric acid dropwise to adjust the pH of the solution to 4-5, then heat to reflux and keep stirring. After the reaction is over After concentrating under reduced pressure, a paste with a solid content of 75-85% is made. After the paste is naturally cooled to room temperature, it is sent to a freeze dryer. The dried solid is made into a micronized powder, namely, polyglutamic acid- Poloxamer esters;

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

Embodiment 3

[0029] (1) Mix 10g of water treatment grade polyglutamic acid and 5g of Poloxamer 188 and dissolve in water, and add dilute sulfuric acid dropwise to adjust the pH of the solution to 4-5, then heat to reflux and keep stirring. After the reaction is over After concentrating under reduced pressure, a paste with a solid content of 75-85% is made. After the paste is naturally cooled to room temperature, it is sent to a freeze dryer. The dried solid is made into a micronized powder, namely, polyglutamic acid- Poloxamer esters;

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

[0031] Modificat...

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Abstract

The invention discloses an efficient degreasant special for natural leather, and relates to the technical field of leather processing. The efficient degreasant comprises raw materials, by weight, 15-20 parts of decyl glucoside, 10-15 parts of PEG-60 hydrogenated castor oil, 5-10 parts of lauroyl sodium glutamate, 5-10 parts of water treatment level polyglutamic acid, 1-5 parts of poloxamer 188, 1-5 parts of polyoxyethylene, 1-5 parts of chitosan quaternary ammonium salt, 0.5-3 parts of hydrolytic polymaleic anhydride and 0.1-1 part of ethylenediamine tetraacetic acid disodium salt. The degreasing rate of the prepared degreasant reaches 80% or above, the degreasant belongs to a low foam type degreasant, only a small quantity of foams are generated after the degreasant is dissolved into water, and therefore the follow-up water using quantity is reduced; and meanwhile, the prepared degreasant is mild in chemical property, and the fiber structure of the natural leather cannot be damaged.

Description

Technical field: [0001] The invention relates to the technical field of leather processing, in particular to a high-efficiency degreasing agent dedicated to natural leather. Background technique: [0002] In the leather processing process, because natural leather has a certain amount of fat, if it is not degreasing treatment, it will hinder the penetration of leather process materials into the skin, and the fatty acids generated by the hydrolysis of fats and oils will react with metal ions to form water-insoluble Metal soap salt is not conducive to dyeing treatment. Therefore, the degreasing process is a vital process in the processing of natural leather. [0003] Emulsification degreasing is one of the most widely used degreasing methods in the leather industry. It is also called surfactant degreasing. The use of surfactant degreasing agents can remove more than 90% of the fat in the hide. But leather degreasing not only needs to remove the oil on the surface of the hide, but al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C5/00
CPCC14C5/00
Inventor 金继善
Owner 嘉兴宏麟皮化有限公司
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