Tanning agent for cow skins and cow skin tanning process

A tanning agent and cowhide technology, applied in leather manufacturing, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather/fur mechanical treatment, etc., can solve the problem of high cost, low efficiency and complex tanning process and other problems, to achieve the effect of reducing production costs, simplifying processes, and simplifying tanning processes

Inactive Publication Date: 2017-12-01
QUANZHOU XINCAI TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a tanning agent for cowhide and its cowhide tanning process to overcome the problems of complex tanning process, low efficiency and high cost in the current partial tanning process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0023] The preparation of this tanning agent is made of the following raw materials in proportioning by weight: 8.5 parts of methacrylic acid, 5 parts of resorcinol, 11 parts of urea-formaldehyde resin, 2 parts of azerolone, 13 parts of clothing Dibutyl carboxylate, 8 parts of dicarboxyethylamine, 16 parts of sodium phthalate, 4.5 parts of o-carboxybenzaldehyde, 5.5 parts of di-n-butylamine, 6.5 parts of aliphatic aldehydes and 10 parts of cis-butyl Acenoic acid.

[0024] The tanning process of cowhide using the tanning agent of the present embodiment is that the cowhide is only processed through the following steps carried out in sequence:

[0025] a. Soaking in water: immerse the dehaired cowhide in salt water with a pH of 4.5, and the soaking time is 6 hours;

[0026] b. De-meat: remove the meat of the cowhide through the de-meat machine;

[0027] c. Softening: immerse the cowhide in salt water with a pH of 4.5 for 15-17 minutes, then drain the cowhide for 4-8 hours;

[...

Embodiment approach 2

[0032] The preparation of the tanning agent of the present embodiment is made of the following raw materials in proportions by weight: 7.5 parts of methacrylic acid, 5.5 parts of resorcinol, 12 parts of urea-formaldehyde resin, 1.5 parts of azolone, 12 parts Parts of dibutyl itaconate, 8.5 parts of biscarboxyethylamine, 16.5 parts of sodium phthalate, 3.5 parts of o-carboxybenzaldehyde, 4.5 parts of di-n-butylamine, 7.5 parts of fatty aldehyde and 9 parts of maleic acid.

[0033] The tanning process of cowhide using the tanning agent of the present embodiment is that the cowhide is only processed through the following steps carried out in sequence:

[0034] a. Soaking in water: immerse the dehaired cowhide in salt water with a pH of 5, and the soaking time is 8 hours;

[0035] b. De-meat: remove the meat of the cowhide through the de-meat machine;

[0036] c. Softening: immerse the cowhide in salt water with a pH of 5 for 20 minutes, then drain the cowhide for 4 to 8 hours; ...

Embodiment approach 3

[0040] The preparation of the tanning agent of the present embodiment is made of the following raw materials in proportions by weight: 9.5 parts of methacrylic acid, 4.5 parts of resorcinol, 10 parts of urea-formaldehyde resin, 2.5 parts of azerolone, 14 parts Parts of dibutyl itaconate, 7.5 parts of biscarboxyethylamine, 16 parts of sodium phthalate, 4.5 parts of o-carboxybenzaldehyde, 5.5 parts of di-n-butylamine, 6.5 parts of fatty aldehyde and 9.5 parts of maleic acid.

[0041] The tanning process of cowhide using the tanning agent of the present embodiment is that the cowhide is only processed through the following steps carried out in sequence:

[0042] a. Soak in water: immerse the dehaired cowhide in salt water with a pH of 4, and the soaking time is 64 hours;

[0043] b. De-meat: remove the meat of the cowhide through the de-meat machine;

[0044] c. Softening: immerse the cowhide in salt water with a pH of 4 for 15 minutes, then drain the cowhide for 4 to 8 hours; ...

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PUM

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Abstract

The invention relates to a tanning agent for cow skins and a cow skin tanning process. The tanning agent consists of methacrylic acid, resorcinol, urea resins, 2-oxopyrrolidin, dibutyl itaconate, bicarboxyethyl amine, carboxybenzaldehyde, di-n-butylamine, fatty aldehyde and maleic acid. The tanning process can perform the procedures of water leaching, fleshing, softening, tanning and airing on the cow skins. The tanning agent achieves an excellent tanning effect on the cow skins in a targeted manner; the tanning agent is adopted to tan the cow skins to effectively simplify the procedures; cow leathers can be obtained by only performing the procedures of water leaching, fleshing, softening, tanning and airing on the cow skins; the tanning procedure achieves a fat burning effect on the cow skins; the tanning process is effectively simplified; the tanning efficiency is effectively improved; the production cost is effectively reduced; and the produced cow leathers have such excellent characteristics as softness, fineness, wear resistance and high elasticity.

Description

technical field [0001] The invention relates to a tanning agent and a tanning process thereof, in particular to a tanning agent especially suitable for cowhide and a cowhide tanning process thereof. Background technique [0002] Leather is denatured and non-perishable animal skin obtained through physical and chemical processing such as depilation and tanning. Leather is composed of natural protein fibers tightly woven in three-dimensional space. There is a special grain layer on the surface, which has natural grain and luster, and feels comfortable. [0003] The current leather tanning process is relatively complicated. For example, the Chinese invention patent with application number 201310725180.5 provides a goatskin synthetic tanning process. Meat → secondary degreasing → pickling → softening → tanning → neutralization → drying with water → regain moisture and shovel until soft. The tanning process requires multiple processes of immersion in water, degreasing, etc., th...

Claims

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Application Information

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IPC IPC(8): C14C3/08C14C3/22C14C1/08C14C1/04C14B1/02
CPCC14C3/08C14B1/02C14C1/04C14C1/08C14C3/22
Inventor 王星河
Owner QUANZHOU XINCAI TRADE
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