A class of high-fixation rate phthalocyanine azo dichromate reactive dyes and its preparation method and application

Abstract

The invention relates to phthalocyanine-azo double-chromophore activated dye having a high fixation rate and a preparing method and application thereof. The method includes copper phthalocyanine chlorosulfonation to prepare a phthalocyanine turquoise blue base, a first time of condensation, a second time of condensation, diazotization and a coupling reaction to obtain the activated dye having a high fixation rate. The dye is suitable for pattern printing for cotton, artificial cotton, linen, regenerated fibers and textiles thereof, and has a high fixation rate, bright color, excellent improving performance, good washable fastness, good color fastness to rubbing and a good application prospect.

Description

technical field

[0001] The invention belongs to the field of reactive dyes, and in particular relates to a class of reactive dyes with high fixation rate phthalocyanine azo-based dichromophores and a preparation method and application thereof. Background technique

[0002] Since the advent of reactive dyes, it has become the most important dye category in cotton reactive dyes. It has bright color, complete chromatogram, low cost, and its development has always been in an important position. Reactive dye molecules are composed of water-soluble groups, dye precursors, linking groups, and active groups. During the application process, dye molecules will be hydrolyzed and lose the ability to react with fibers, reducing the utilization rate of dyes. At the same time, the discharged dye wastewater will cause ecological problems. Environmental protection issues also have certain harm to the human body. Therefore, it is of great significance to develop new reactive dyes with high c...

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