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Purple active dye

A reactive dye, purple technology, used in reactive dyes, azo dyes, organic dyes, etc.

Inactive Publication Date: 2010-06-09
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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Experimental program
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Embodiment 1

[0015] This embodiment provides a preparation method of a specific compound in the compound of formula (I), which is a compound of the following formula (II):

[0016]

[0017] The specific preparation method is as follows:

[0018] 1. Dissolution of H acid

[0019] Add 200 ml of water to a 500 ml four-necked flask, then add 17.1 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 250 ml so that the concentration C% of the solution is 4.5.

[0020] 2. Condensation reaction

[0021] The external bath adjusts the temperature of the H acid solution to 0°C. Maintaining the temperature at 0-5°C, slowly add 10.6 g of 100% 4-hydroxybenzoyl chloride dropwise in four times for a total of 60 minutes. After each addition, adjust the pH to 6-6.5 with 30% sodium hydroxide. Maintain the temperature at 0-5°C and maintain the pH=6-6.5 for 3 hours. Then adjust the pH to...

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Abstract

The invention discloses a purple active dye, which has a structure as follows: FORMULA, wherein R1 is H,-CH3, -OCH3 or-SO3M; R2 is H, -CH3, -NO2 or-OH; and M is H or alkali metal. The purple active dye for wool has higher reactivity, good solubility, colorful and beautiful colored light, and low cot, and is environment-friendly.

Description

technical field [0001] The invention relates to the technical field of reactive dyes, in particular to a purple reactive dye for wool. 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. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a purple reactive dye for wool that can reduce environmental pollution, has low raw material cost, high product solubility, bright color, excellent application performance, convenient use and strong applicabil...

Claims

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Application Information

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IPC IPC(8): C09B62/473C09B67/24D06P1/384D06P3/14
Inventor 苏长湘郝津来
Owner TIANJIN DEK CHEM
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