Modification method for reactive dye for leather

A technology of reactive dyes and leather, which is applied in the field of modification of reactive dyes for leather, to achieve the effects of improving dry and wet rub resistance, improving humidity and heat stability and physical and mechanical properties, improving color fastness, washing resistance and sweat resistance

Inactive Publication Date: 2015-09-23
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Modification method for reactive dye for leather
  • Modification method for reactive dye for leather

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Dissolve 13.59g of glycolic acid in 1000ml of water, neutralize it with sodium hydroxide solution to pH 8-9 at room temperature, then add 80g of active bright yellow K-4G, raise the temperature to 60°C, react for 4h, and the product is dried and ground.

Embodiment 2

[0024] Dissolve 17.44g of sodium glycolate in 1000ml of water, then add 80g of active bright yellow K-4G, raise the temperature to 80°C, control the pH of the system to 8-9, react for 2h, and the product is dried and ground.

Embodiment 3

[0026] Dissolve 15g of glycine in 1000ml of water, neutralize with sodium hydroxide solution to pH 8-10 at room temperature, then add 61.5g of reactive brilliant red X-3B, heat up to 95°C, react for 2 hours, and the product is dried and ground.

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Abstract

The invention belongs to the technical field of light industries, and particularly relates to a modification method for a reactive dye for leather. The modification method for the reactive dye for leather is characterized in that a product applied to the dyeing of leather and products thereof is obtained by reacting the reactive dye with one or more of hydroxycarboxylic acid or salts thereof, amino acid or salts thereof and oligopeptides and introducing carboxyl groups into reactive dye molecules. According to the method, the application fields of the reactive dye are extended, the performance of leather, such as dyeing fastness, washing durability and sweat resistance, can be effectively improved, the utilization rate of the dye can be increased, and the dye content of wastewater can be reduced.

Description

(1) Technical field [0001] The invention belongs to the technical field of light industry, in particular to a method for modifying reactive dyes for leather. (2) Background technology [0002] The color of leather and its products reflects people's aesthetic appeal, and is often the primary evaluation feature for people to choose leather products such as leather shoes, leather clothes, bags, etc. Therefore, leather dyeing is one of the most important processes in the tanning process. At present, acid dyes in the textile industry are mainly used for leather dyeing. The dye molecules form reversible bonds with leather fibers through weak bases such as ionic bonds, leave or van der Waals forces, or are distributed in the gaps between leather fibers in the form of physical precipitation. Therefore, the color of leather The fastness is poor, the leather after dyeing is not resistant to dry and wet rubbing, and the dye content in the dyeing wastewater is high, which is difficu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/825
Inventor 王玉路靳丽强
Owner QILU UNIV OF TECH
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