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Preparation method of quickly degreased degreasant material for leather making

A degreaser and fast technology, applied in leather degreasing, application, small raw hide/large raw hide/leather/fur treatment, etc., can solve the problem of poor degreasing effect of leather degreaser, achieve fast and effective degreasing, good synergistic effect, improve The effect of degreasing rate

Inactive Publication Date: 2019-06-28
管小梅
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AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the problem that the degreasing effect of the existing leather degreasing agent is poor, a preparation method of a fast degreasing type degreasing agent material for leather making is provided

Method used

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Embodiment Construction

[0025] In parts by weight, weigh 45 to 50 parts of sodium dodecylbenzenesulfonate, 10 to 15 parts of polyacrylamide and 6 to 8 parts of sodium nonylphenol polyoxyethylene ether carboxylate, place them in a mixer, and stir Mix and collect the mixed solution, let it stand for defoaming for 6-8 hours, and obtain the composite surfactant material; in parts by weight, weigh 45-50 parts of deionized water, 3-5 parts of chitosan, 1-2 parts of Put glacial acetic acid and 6-8 parts of composite surfactants in a three-necked flask, stir and mix them, and ventilate the air with nitrogen. Control the rate of nitrogen gas introduction at 10-15mL / min. The mass ratio is 1:15, add the ammonium persulfate solution with a mass fraction of 15% dropwise to the mixed solution, and control the drop rate of the ammonium persulfate solution at a rate of 1-2mL / min. Insulate and react at 65°C for 1 to 2 hours to obtain the reaction solution and weigh 45 to 50 parts of the reaction solution, 10 to 15 pa...

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Abstract

The invention relates to a preparation method of a quickly degreased degreasant material for leather making and belongs to the technical field of degreasants. According to the technical scheme, the preparation method comprises the following steps: carrying out free radical graft polymerization in an aqueous solution to prepare a porous chitosan grafted polyacrylic acid / sodium based montmorillonitecompound super absorbent gel as a matrix by taking chitosan and acrylic acid and sodium based montmorillonite as raw materials; by taking the gel as a raw material, immobilizing lipase to a gel resincarrier by means of an adsorption method; then coating the carrier with alkyl glutamate ribitol; and coating and filling the lipase to a gel material. In a using process, the lipase and surfactant components are released effectively, and meanwhile, the degreasant has a good synergistic effect by means of catalytic hydrolytic action of the lipase to grease and emulsification action of the degreasant on grease and an enzymatic hydrolysate, so that the degreasing rate of the lipase can be improved greatly and degreasing can be quickly and effectively carried out.

Description

technical field [0001] The invention relates to a preparation method of a rapid degreasing type degreasing agent material for tanning, and belongs to the technical field of degreasing agents. Background technique [0002] Tannery industry is a traditional industry, it needs to input higher animal resources, but gets relatively less leather. Only 20% of raw hides are converted into leather during the processing from raw leather to finished leather, and most of the rest are mainly discarded as leather solid waste, which not only wastes excellent raw leather resources, but also causes great environmental damage. pollute. The leftovers from slicing, peeling and trimming in the process of tanning are the main part of solid waste, and the main component of these leftovers is protein. It is also the main component in waste liquid and sludge. According to statistics, with the development of the leather industry, more than 1.4 million tons of leather solid waste are produced every...

Claims

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Application Information

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IPC IPC(8): C14C5/00
Inventor 管小梅
Owner 管小梅
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