High-solubility reactive dye and preparation method thereof

Abstract

The invention discloses high-solubility reactive dye and a preparation method thereof and relates to the field of reactive dye. The preparation method includes: using cyanuric chloride and a coupling component to perform a condensation reaction, allowing arylamine diazonium salt to have a coupling reaction with the cyanuric chloride condensation product to prepare dichloro s-triazine type reactive dye, allowing the dichloro s-triazine type reactive dye to react with polyethylene polyamine, and allowing the product to have sulfonation reaction with hydroxymethyl sodium sulfonate or epoxy sodium proparesulfonic acid to prepare the high-solubility reactive dye. The preparation method has the advantages that the method is simple in process, the color performance and dyeing performance of the dye are unaffected, and the solubility performance of the low-solubility monochloro s-triazine type reactive dye can be improved evidently.

Description

technical field [0001] The present invention relates to a reactive dye, especially a highly soluble reactive dye and a preparation method thereof. Background technique [0002] Reactive dyes, also known as reactive dyes, contain reactive groups in their molecular structure, which can form covalent bonds with hydroxyl and amino groups on fibers such as cotton and wool, so the dyed fibers have higher resistance to washing, The rubbing fastness is the most important class of synthetic dyes. [0003] In recent years, in order to further save energy and reduce emissions, the printing and dyeing industry has favored multiples of reactive dyes in small liquor ratio dyeing, cold pad dyeing, low temperature dyeing and continuous dyeing. In addition, the emergence of computer-aided automatic batching, pulp mixing and the introduction of liquid dyes require It can prepare high-concentration dye solution and high-stability printing paste, which all put forward new requirements for the ...

AI Technical Summary

Problems solved by technology

However, many K-type reactive dyes with bright colors and superior performance, such as reactive yellow 2, reactive yellow KM-RN, reactive orange 5, reactive red K-2BP, reactive blue 5, etc., have limited applications due to their low solubility.

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