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A wet-state dyeing and fixing method for leather based on zirconium-aluminum-titanium complex

A complex, zirconium-aluminum-titanium technology, applied in dyeing, leather dipping, small hide/big hide/leather/fur treatment, etc., can solve the problem of weak dye binding, low wet rubbing fastness, high chroma of waste liquid, etc. problems, to achieve the effect of easy implementation of the overall process, reduction of the chroma of waste dyeing liquor, and simple overall process

Active Publication Date: 2018-08-28
XINGYE LEATHER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the gradual enhancement of people's awareness of environmental protection, everyone began to study pure vegetable tanning or organic combined tanning. Dye) dyeing, because the surface of the crust leather has been negatively charged so that the two charges repel each other, the color of the dyeing is not full, and the dyeing rate is poor. Since the dye contains groups such as sulfonic acid group and carboxyl group, it is easy to re-dissolve in water when it meets water, so that the wet rubbing fastness is low and the coloring power is poor
[0003] At present, formic acid is mainly used to fix the color of acidic or direct dyes to form pigment acid, which makes the dye insoluble in water and deposits. Many, high chroma of waste liquid, high cost, low efficiency and poor effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 of the present invention provides a method for dyeing and fixing leather in wet state based on zirconium-aluminum-titanium complex, which includes the following process steps:

[0021] Step 1, pre-dyeing and finishing wet crust leather → retanning → dyeing → fatliquoring, wherein the pre-dyeing and finishing treatment includes batching, squeezing and stretching, smoothing, rinsing and neutralization, the wet crust leather For pure vegetable tanned leather;

[0022] Step 2. Add 1% zirconium-aluminum-titanium complex after the conventional dyeing and fatliquoring process, rotate for 20 minutes, and drain directly;

[0023] Step 3. Add 200% water with a water temperature of 50-52°C in the drum, Black NB (Yongguang Dyestuff Co., Ltd.) 0.8%, turn for 15 minutes, add 1% of zirconium aluminum titanium complex, turn for 15 minutes, then add cationic oil KSP 1%, turn 15min;

[0024] Step 4, Drain, add 200% water at a temperature of 26°C, rotate for 10 minutes, dra...

Embodiment 2

[0027] Embodiment 2 of the present invention provides another method for wet-state dyeing and fixing of leather based on zirconium-aluminum-titanium complexes, which includes the following process steps:

[0028] Step 1, pre-dyeing and finishing wet crust leather → retanning → dyeing → fatliquoring, wherein the pre-dyeing and finishing treatment includes batching, squeezing and stretching, smoothing, rinsing and neutralization, the wet crust leather is metal-free bond tanned leather;

[0029] Step 2. Add 1% zirconium-aluminum-titanium complex after the conventional dyeing and fatliquoring process, rotate for 20 minutes, and drain directly;

[0030] Step 3. Add 200% of water with a water temperature of 50-52°C in the drum, Black NB (Yongguang Dyestuff Co., Ltd.) 0.5%, turn for 10 minutes, add 0.5% of zirconium aluminum titanium complex, turn for 10 minutes, add Black NB0.5 %, turn for 10min, add 0.5% zirconium aluminum titanium complex, turn for 10min, then add cationic oil VM...

Embodiment 3

[0034] Embodiment 3 of the present invention provides another method for wet-state dyeing and fixing of leather based on zirconium-aluminum-titanium complexes, which includes the following process steps:

[0035] Step 1, pre-dyeing and finishing wet crust leather → retanning → dyeing → fatliquoring, wherein the pre-dyeing and finishing treatment includes batching, squeezing and stretching, smoothing, rinsing and neutralization, the wet crust leather is semi-vegetable tanned leather;

[0036] Step 2. Add 0.5% zirconium-aluminum-titanium complex after the conventional dyeing and fatliquoring process, rotate for 20 minutes, and drain directly;

[0037] Step 3. Add 200% of water with a water temperature of 50-52°C in the drum, Black NB (Yongguang Dyestuff Co., Ltd.) 1%, and turn for 10 minutes, add 0.5% of zirconium-aluminum-titanium complex, turn for 10 minutes, and then add cationic oil GS 0.5%, VM 0.5%, turn 10min;

[0038] Step 4, Drain, add 200% water at a temperature of 26...

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Abstract

The invention relates to the technical field of leather making techniques and provides a wet-state dyeing finishing and fixation method for leathers based on a zirconium-aluminum-titanium complex. The zirconium-aluminum-titanium complex is added in a later period of dyeing and fat-liquoring; the zirconium-aluminum-titanium complex is a multi-metal cation tanning agent which may combine with leather fibers so as to increase positive charge on leather surface, to improve tinting strength of the leather surface and color brightness and to basically solve the shading problem, color fullness of cationic crust leathers is improved, consumption of dyes and formic acid in traditional fixation methods is lowered, dyeing rate and fastness of dyes are increased, the content of dyes in spent dye liquor is further decreased, wastewater treatment is easier, and a leather making process is greener.

Description

technical field [0001] The invention relates to the technical field of leather production technology, in particular to a wet-state dyeing and fixing method for leather based on a zirconium-aluminum-titanium complex. Background technique [0002] Color fixing is a very important process in the leather water field stage, it can give the leather a perfect color and increase its commercial value. Due to the long-term dominant position of chrome tanning, almost all special leather dyes are developed and produced according to the needs and characteristics of chrome tanned leather. With the gradual enhancement of people's awareness of environmental protection, everyone began to study pure vegetable tanning or organic combined tanning. Dye) dyeing, because the surface of the crust leather has been negatively charged so that the two charges repel each other, the color of the dyeing is not full, and the dyeing rate is poor. Since the dye contains groups such as sulfonic acid groups ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/32D06P5/10D06P1/39D06P1/00D06P1/44C14C9/00C14C9/02
Inventor 吴华春张越荣但卫华温会涛杨义清王小卓
Owner XINGYE LEATHER TECH CO LTD
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