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Reactive dyeing method for figured sea-island super-fine fiber suede leather and hair

A technology of reactive dyes and microfibers for wool, which can be used in dyeing, textiles, and papermaking. It can solve the problems of poor color fastness and heavy metal pollution, and achieve the effect of low wet rubbing fastness.

Inactive Publication Date: 2018-02-13
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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  • Reactive dyeing method for figured sea-island super-fine fiber suede leather and hair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) Put Dingshima microfiber suede and reactive dyes for wool in the dyeing bath, the bath ratio is 1:15, adjust the pH to 3 with acetic acid, raise the temperature from room temperature to 90 °C at a rate of 1 °C / min, and keep warm 10min, then lowered to 20°C at 1°C / min;

[0015] The weight of reactive dye A for wool is 2% of the fabric;

[0016] Described wool reactive dyestuff is selected from Huntsman wool reactive dyestuff, trade name is Lan Nasu (LANASOL);

[0017] (2) Use acetic acid to adjust the pH of the dyeing bath to 3, and fix the color at 20°C for 20 minutes to obtain dyed Dingshima microfiber suede.

Embodiment 2

[0019] (1) Put Dingshima microfiber suede and reactive dyes for wool in the dyeing bath, the bath ratio is 1:30, the pH is adjusted to 7 with acetic acid, the temperature is raised from room temperature to 120 °C at a rate of 2 °C / min, and the temperature is kept 70min, then lowered to 60°C at 3°C / min;

[0020] The weight of reactive dye A for wool is 5% of fabric;

[0021] (2) Use acetic acid to adjust the pH of the dyeing bath to 9, and fix the color at 70°C for 60 minutes to obtain dyed Dingshima microfiber suede.

Embodiment 3

[0023] (1) Put Dingshima microfiber suede and reactive dyes for wool in the dyeing bath, the bath ratio is 1:20, adjust the pH to 5 with acetic acid, raise the temperature from room temperature to 100 °C at a rate of 1.5 °C / min, and keep warm 40min, then lowered to 40°C at 2°C / min;

[0024] The weight of reactive dye A for wool is 3% of fabric;

[0025] (2) Use acetic acid to adjust the pH of the dyeing bath to 7, and fix the color at 40°C for 40 minutes to obtain dyed Dingshima microfiber suede.

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Abstract

The invention discloses a reactive dyeing method for figured sea-island super-fine fiber suede leather and hair. The reactive dyeing method comprises the following steps: (1) putting figured sea-island super-fine fiber suede leather and hair into a dye bath, adjusting the pH to be 3 to 7 with acetic acid, raising the temperature to be 90 to 120 DEG C from room temperature at the speed rate of 0.3to 2 DEG C per min, preserving the temperature for 10 to 70 min, and then cooling to 20 to 60 DEG C at the rate of 1 to 3 DEG C per min; and (2) adjusting the pH of the dye bath, and fixing the colorso as to obtain dyed figured sea-island super-fine fiber suede leather. The dye depth and color uniformity and dry rubbing fastness are fundamentally equivalent, the wet rubbing fastness is 1 to 2 levels higher, and dyeing wastewater does not contain heavy metal ions and is environmentally-friendly. The dyeing method solves the problems that the wet rubbing fastness in conventional dyeing of figured sea-island super-fine fiber suede leather is low and the dyeing wastewater is great in pollution in the prior art.

Description

technical field [0001] The invention relates to a method for dyeing Dingshima superfine fiber suede hair. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38D06P5/02D06P3/24
CPCD06P1/38D06P3/248D06P5/02
Inventor 胡忠杰韩芹张其斌孙向浩
Owner HUAFON MICROFIBER SHANGHAI
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