Reactive dye

Abstract

The invention discloses a reactive dye. The reactive fluorescent dye is a compound with a following general formula (I) structure. The reactive dye has the advantages of simple preparation process, bright color, neutral fixation in dyeing process, no need to add an alkali agent and convenient use, and is an environmentally friendly reactive dye.

Description

technical field [0001] The invention relates to a textile dye, in particular to the preparation and application of a reactive dye. Background technique [0002] The characteristic of reactive dyes is that the molecule contains one or more active groups, which can chemically react with hydroxyl groups, amino groups and other groups in fibers such as cellulose and proteins under certain conditions, so that the dyes and fibers form covalent bonds And firmly combined, so that the washing fastness of the dye is greatly improved. In 1956, the British ICI company first produced reactive dyes for cotton containing dichloro-s-triazine active groups. Since then, countries around the world have successively developed and produced various types of reactive dyes. [0003] Generally, during the fixation process of reactive dyes, an alkaline agent (usually sodium carbonate, sometimes sodium hydroxide or sodium bicarbonate) needs to be added to facilitate the completion of the reaction. ...

AI Technical Summary

Problems solved by technology

[0004] After dyeing with reactive dyes, a large amount of alkaline sewage is generated, which seriously pollutes the surrounding environment of the printing and dyeing factory, which is not conducive to the growth of surrounding trees and crops.

The presence of alkaline agents will also accelerate the hydrolysis of reactive dyes, reduce the utilization rate of reactive dyes, and increase the pollution degree and treatment difficulty of dyeing wastewater

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