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Rapid dyeing method for superfine fiber suede leather

A technology of superfine fiber and suede, which is applied in dyeing, textiles and papermaking, etc., can solve problems such as poor color fastness and heavy metal pollution, and achieve the effect of improving wet rubbing fastness

Inactive Publication Date: 2019-04-09
HUAFON MICROFIBER SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dyeing with acid dyes, the color fastness of the product is poor, dyeing with neutral dyes, there is a problem of heavy metal (such as Co, Cr, etc.) pollution

Method used

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  • Rapid dyeing method for superfine fiber suede leather
  • Rapid dyeing method for superfine fiber suede leather
  • Rapid dyeing method for superfine fiber suede leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Immerse the superfine fiber synthetic leather in the treatment liquid, pad and pad, the liquid-carrying rate of the microfiber leather is 50%; dry after padding, and carry out conventional dyeing on the dried microfiber suede leather.

[0020] The treatment liquid includes the following components in parts by weight:

[0021]

[0022] The preparation method is as follows:

[0023] Slowly add dispersant, anti-sedimentation agent, and defoamer to deionized water under high-speed dispersion and mix evenly, then add water-based polyurethane to it and tell emulsification to obtain the treatment liquid;

[0024] The color fastness of the obtained microfiber leather is ≥3-4 grade for dry rubbing, and ≥2-3 grade for wet rubbing.

Embodiment 2

[0026] Immerse the superfine fiber synthetic leather in the treatment liquid, and pad it. The liquid-carrying rate of the microfiber leather is 70%. After the padding, it is dried, and the superfiber suede leather after drying is subjected to conventional dyeing.

[0027] The treatment liquid includes the following components in parts by weight:

[0028]

[0029] The preparation method is as follows:

[0030] Slowly add dispersant, anti-sedimentation agent, and defoamer to deionized water under high-speed dispersion and mix evenly, then add water-based polyurethane to it and tell emulsification to obtain the treatment liquid;

[0031] The color fastness of the obtained microfiber leather is ≥5 grades for dry rubbing, and ≥3-4 grades for wet rubbing.

Embodiment 3

[0033] The microfiber synthetic leather is immersed in the treatment liquid, and the superfiber suede leather is subjected to conventional dyeing after padding.

[0034] The treatment liquid includes the following components in parts by weight:

[0035]

[0036]

[0037] The preparation method is as follows:

[0038] Slowly add dispersant, anti-sedimentation agent, and defoamer to deionized water under high-speed dispersion and mix evenly, then add water-based polyurethane to it and tell emulsification to obtain the treatment liquid;

[0039] The color fastness of the obtained microfiber leather is ≥4 for dry rubbing and ≥3 for wet rubbing.

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Abstract

The invention discloses a rapid dyeing method for superfine fiber suede leather. The rapid deying method comprises the following steps: soaking superfine fiber suede leather into a treatment liquid, carrying out soaking rolling, drying after soaking rolling, and dyeing the dried superfine fiber suede leather, wherein the treatment liquid comprises the following components in parts by weight: 8-20parts of waterborne polyurethane, 0.3-0.5 part of a dispersant, 0.5-1.5 parts of an anti-sinking agent, 0.2-1 part of a defoaming agent and 100 parts of deionized water. As waterborne polyurethane micro particles are fed into gaps of a superfine fiber, uniform dyeing is achieved in later dyeing, and dyeing depths, color uniformity, dry friction fastness and wet friction fastness can be all improved. By adopting the rapid dyeing method, the problems that in the prior art the superfine fiber suede leather is low in wet friction fastness and dark colors of dyeing patterns are easily faded in common dyeing of the superfine fiber suede leather are solved.

Description

technical field [0001] The invention relates to a fast dyeing method for superfine fiber suede. Background technique [0002] Superfine fiber synthetic leather is the third generation of artificial leather after PVC and PU. It is made of nylon 6 superfine fiber with a structure and performance similar to that of collagen fibers in natural leather. Density non-woven fabric, excellent refilling performance, polyurethane with open microporous structure, processed after post-processing. This synthetic leather has the hygroscopicity inherent in the natural leather of the ultra-fine collagen fibers of Tojishima. Therefore, it is comparable to high-grade natural leather in terms of internal microstructure, appearance texture, physical properties and wearing comfort. In addition, microfiber synthetic leather is superior to natural leather in terms of chemical resistance, quality uniformity, production and processing adaptability, and waterproof and mildew resistance. It is used to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P5/00D06P3/24
CPCD06P3/24D06P5/002
Inventor 胡忠杰韩芹张其斌孙向浩
Owner HUAFON MICROFIBER SHANGHAI
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