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Red reactive dye for wool and preparation method thereof

A reactive dye, red technology, applied in the field of wool reactive dye and its preparation, to achieve the effect of low raw material cost, strong applicability and high solubility

Active Publication Date: 2012-05-02
TIANJIN DEK CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acid dyes can no longer meet the development of the times

Method used

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  • Red reactive dye for wool and preparation method thereof
  • Red reactive dye for wool and preparation method thereof
  • Red reactive dye for wool and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] a. Dissolution of H acid

[0055] Add 200 ml of water to a 500 ml beaker, then add 34.1 g of 100% H acid, and adjust the pH to 6.5-7 with 30% sodium hydroxide solution under stirring to dissolve and clarify the material. Adjust the volume of the solution to 227 mL. Make the mass / volume concentration of the solution 15%

[0056] b. Condensation reaction

[0057] Use direct ice and water to adjust the temperature of the H acid solution to 5-7°C, adjust the solution mass / volume concentration to 10%, then maintain pH=6-6.5 with 96% sodium bicarbonate, and maintain the temperature at 5-10°C with direct ice, It takes 50 minutes to add 32.6 g of 100% 2,3-dibromopropionyl chloride and acetone mixture, maintain the temperature at 5-10° C. and the pH value at 6-6.5, and react for 2 hours to obtain the condensation liquid.

[0058] c, diazotization reaction

[0059] Add 200 ml of water to an 800 ml beaker, then add 31.1 g of 100% 2-methoxy-5-β-ethylsulfone sulfate aniline, and...

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Abstract

The invention discloses a red reactive dye for wool and a preparation method thereof. The red reactive dye for the wool is a compound having a general formula (I) structure as follows. The usage and the preparation for the dye can reduce environmental pollution; and the red reactive dye for wool is characterized by low cost of raw materials, high product solubility, bright color, excellent application performance, convenient use and strong applicability.

Description

technical field [0001] The invention relates to a reactive dye for wool and a preparation method thereof, in particular to a red reactive dye for wool and a preparation method thereof. Background technique [0002] Now generally dyeing wool and cashmere, the dyes used are acid dyes, acid mordant dyes and metal complex dyes. Because the materials dyed with these types of dyes have poor fastness, the shade is not very bright, and it will cause troubles to the environment. In the 21st century, due to environmental and ecological constraints, the requirements for color uptake rate, color fixation rate and dyeing wastewater are getting higher and higher. Acid dyes can no longer meet the development of the times. [0003] The technical problem to be solved by the present invention is to provide a red reactive dye for wool that can reduce environmental pollution, requires low cost of raw materials, high product solubility, bright color, excellent application performance, convenie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B62/825D06P3/12D06P1/384
Inventor 张兴华苏长湘
Owner TIANJIN DEK CHEM
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