A kind of reactive orange dye and its preparation method and application

Abstract

The invention discloses reactive orange dye as well as a preparation method and application thereof. The reactive orange dye has a structural general formula as shown in the description, wherein M represents hydrogen, sodium, potassium or lithium. The preparation method comprises the following steps: completing condensation reaction and diazo-reaction through sub-steps, and then coupling, thus preparing the reactive orange dye. The invention also discloses the application of the reactive orange dye in printing and dyeing. The reactive orange dye disclosed by the invention has higher color fixation rate, deep dyeing property and bright color; meanwhile, the reactive orange dye has low-alkali dyeing property, the sewage emission is greatly reduced, and the requirements on environment protection at present can be particularly met.

Description

technical field [0001] The invention belongs to the field of textile printing and dyeing, and in particular relates to a reactive orange dye and its preparation method and application. Background technique [0002] Reactive dyes, also known as reactive dyes, are a class of dyes that chemically react with fibers during dyeing. Its outstanding features are: broad chromatogram, bright color, excellent performance, strong applicability, and it can obtain high levels of fastness, especially wet fastness, with economical dyeing process and simple dyeing operation. One of the best choices to replace banned dyes and other types of fiber dyes (such as sulfur dyes, ice dyes and vat dyes, etc.). [0003] As a representative of the modern dye industry, reactive dyes have achieved rapid development in recent years. At present, the annual output of reactive dyes for cellulose fibers in the world has reached more than 200,000 tons, accounting for more than 20% of the world's annual output...

AI Technical Summary

Problems solved by technology

[0003] As a representative of the modern dye industry, reactive dyes have achieved rapid development in recent years. At present, the annual output of reactive dyes for cellulose fibers in the world has reached more than 200,000 tons, accounting for more than 20% of the world's annual output of dyes. Human beings have increasing requirements for environmental protection. Traditional reactive dyes, especially reactive orange dyes, have shortcomings such as low color fixation rate, low dyeing depth, and high-salt and high-alkali dyeing. The application of reactive dyes is limited, so it is urgent to develop a group of reactive dyes with high color fixation rate, high dyeing depth and low salt-alkali dyeing

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