Leveling agent for leather, preparation method and method for dyeing leather

A leveling agent and leather technology, applied in the field of leather auxiliaries, can solve the problems of non-obvious difference, different density, thickness, fiber structure, uneven dyeing of leather, etc., achieve uniform dyeing effect, simple preparation method, and improve The effect of dyeing rate

Active Publication Date: 2017-07-07
海宁市芬尼司皮革科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the existing field of leveling agents, the composition of leather leveling agents is mostly the same as that of cotton cloth, wool and real silk, and the difference is not obvious, but the properties such as density, thickness, and fiber structure of leather are similar to those of cotton cloth, wool and silk. And the properties of silk materials are obviously different, so the use of existing leather leveling agents will still cause uneven leather dyeing

Method used

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  • Leveling agent for leather, preparation method and method for dyeing leather

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The leather leveling agent of the present embodiment comprises the following components by weight: 30 parts of dodecylamine polyoxyethylene ether, 20 parts of dodecyl dimethyl benzyl ammonium chloride, C 16 20 parts of fatty alcohol polyoxyethylene ether, 1 part of polyvinylpyrrolidone, 19 parts of ethylene glycol, and 10 parts of water.

[0036] Mix the above ingredients at 50°C and stir at 800r / min for 20min to prepare leveling agent 1. After testing, pH=7.5.

[0037] Put 520g of water-washed bovine leather into the drum, after neutralization and washing, add 1040g of water, add 2.6g of leveling agent 1 into the drum, and rotate for 5min at 50°C. Add 5.2g dyestuff subsequently, after rotating 60min, add formic acid to fix the color, wash with water, dry, obtain dyed leather 1 # .

Embodiment 2

[0039] The leather leveling agent of the present embodiment includes the following components by weight: 40 parts of stearylamine polyoxyethylene ether, 15 parts of dodecyl dimethyl benzyl ammonium chloride, C 18 15 parts of fatty alcohol polyoxyethylene ether, 5 parts of polyvinylpyrrolidone, 15 parts of ethylene glycol, and 10 parts of water.

[0040] Mix the above ingredients at 40°C and stir at 1000r / min for 15min to prepare leveling agent 2. After testing, pH=7.8.

[0041]Put 540g of water-washed bovine leather into the drum, after neutralization and washing, add 1080g of water, add 2.7g of leveling agent 2 into the drum, and rotate at 40°C for 10min. After adding 5.4g of dyestuff and rotating for 50min, add formic acid to fix the color, wash with water, and dry to obtain dyed leather 2 # .

Embodiment 3

[0043] The leveling agent for leather of the present embodiment includes the following components by weight: 15 parts of cocoamine polyoxyethylene ether, 10 parts of laurylamine polyoxyethylene ether, 10 parts of dodecyl dimethyl benzyl ammonium chloride, C 14 Fatty alcohol polyoxyethylene ether 5 parts, C 18 10 parts of fatty alcohol polyoxyethylene ether, 2.5 parts of polyvinylpyrrolidone, 12.5 parts of ethylene glycol, and 13 parts of water.

[0044] Mix the above ingredients at 55°C and stir at 600r / min for 15min to prepare leveling agent 3. After testing, pH=7.2

[0045] Put 500g of water-washed bovine leather into the drum, after neutralization and washing, add 1000g of water, add 2.5g of leveling agent 3 into the drum, and rotate for 3min at 40°C. After adding 5g of dyestuff and rotating for 40min, add formic acid to fix the color, wash with water, and dry to obtain dyed leather 3 # .

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Abstract

The invention provides a leveling agent for leather, a preparation method and a leather dying method. The leveling agent comprises components in parts by weight as follows: 20-40 parts of fatty amine polyoxyethylene ether, 10-20 parts of dodecyl dimethyl benzyl ammonium chloride, 10-20 parts of fatty alcohol polyoxyethylene ether, 1-5 parts of polyvinylpyrrolidone, 10-20 parts of ethylene glycol and 10-20 parts of water. The leveling agent for the leather has simple composition and excellent dye-uptake and can realize uniform leather dying safely and effectively.

Description

technical field [0001] The invention belongs to the technical field of leather auxiliary agents, and more specifically relates to a leveling agent for leather, a preparation method and a method for dyeing leather. Background technique [0002] Dyeing is one of the important processes in leather processing. After dyeing, the leather surface is bright in color and elegant in appearance, which can improve consumers' liking. However, due to reasons such as the uneven thickness of the leather and the damage on the surface, the phenomenon of uneven dyeing often occurs when the leather is dyed, which will affect the overall effect of the surface of the leather. In order to promote the uniformity of leather dyeing, it is generally necessary to add leather leveling agent when dyeing leather. [0003] However, in the existing field of leveling agents, the composition of leather leveling agents is mostly the same as that of cotton cloth, wool and real silk, and the difference is not o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/52D06P1/607D06P1/613D06P1/651D06P1/66D06P3/32
CPCD06P1/5242D06P1/6076D06P1/6133D06P1/65118D06P1/66D06P3/32
Inventor 洪新球
Owner 海宁市芬尼司皮革科技服务有限公司
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