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Tanning agent for donkey skins and donkey skin tanning process

A technology of tanning agent and donkey hide, which is applied in the field of tanning agent and its tanning process, can solve the problems of low efficiency, high cost, complicated tanning process, etc., and achieve the effects of simplifying process, reducing production cost and simplifying tanning process

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 donkey hide and its donkey hide tanning process to overcome the problems of complicated 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 consists of the following raw materials in proportioning by weight: 8.5 parts of dibutyl itaconate, 5 parts of diisocyanate, 11 parts of urea-formaldehyde resin, 2 parts of azolone, 13 parts of Maleic acid, 8 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 10 parts of methyl Sodium propylene sulfonate.

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

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

[0026] b. De-meat: remove the meat from the donkey skin by a de-meat machine;

[0027] c. Softening: immerse the donkey skin in salt water with a pH of 4.5 for 15-17 minutes, then drain the donkey skin for...

Embodiment approach 2

[0032] The preparation of the tanning agent of the present embodiment is made up of the following raw materials of proportioning by weight: 7.5 parts of dibutyl itaconate, 5.5 parts of diisocyanate, 12 parts of urea-formaldehyde resin, 1.5 parts of azolane, 12 parts of maleic acid, 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 sodium methacrylate.

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

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

[0035] b. De-meat: remove the meat from the donkey skin by a de-meat machine;

[0036] c. Softening: immerse the donkey skin in salt water with a pH of 5 for 20 minutes, then drain the donke...

Embodiment approach 3

[0040] The preparation of the tanning agent of the present embodiment is made up of the following raw materials of proportioning by weight: 9.5 parts of dibutyl itaconate, 4.5 parts of diisocyanate, 10 parts of urea-formaldehyde resin, 2.5 parts of azolane, 14 parts of maleic acid, 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 sodium methacrylate.

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

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

[0043] b. De-meat: remove the meat from the donkey skin by a de-meat machine;

[0044] c. Softening: immerse the donkey skin in salt water with a pH of 4 for 15 minutes, then drain the donkey...

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Abstract

The invention relates to a tanning agent for donkey skins and a donkey skin tanning process. The tanning agent consists of dibutyl itaconate, diisocyanate, urea resins, 2-oxopyrrolidine, maleic acid, bicarboxyethyl amine, sodium phthalate, carboxybenzaldehyde, di-n-butylamine, fatty aldehyde and sodium methallyl sulfonate. The tanning process can perform the procedures of water leaching, fleshing, softening, tanning and airing on the donkey skins. The tanning agent achieves an excellent tanning effect on the donkey skins in a targeted manner; the tanning agent is adopted to tan the donkey skins to effectively simplify the procedures; donkey leathers can be obtained by only performing the procedures of water leaching, fleshing, softening, tanning and airing on the donkey skins; the tanning procedure achieves a fat burning effect on the donkey skins; the tanning process is effectively simplified; the tanning efficiency is effectively improved; the production cost is effectively reduced; and the produced donkey 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 donkey hides and a donkey hide 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,...

Claims

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Application Information

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IPC IPC(8): C14C1/00C14C1/04C14C1/08C14C3/08C14C3/16
CPCC14C1/04C14C1/00C14C1/08C14C3/08C14C3/16
Inventor 王星河
Owner QUANZHOU XINCAI TRADE
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