Black reactive dye semi-finished product and preparation method and application thereof

Abstract

The invention relates to a black reactive dye semi-finished product and a preparation method and application thereof. The chemical structural general formula of the semi-finished product is shown in a formula (I), and the structural formula is as shown in the specification, wherein R1 refers to -CH3(CH2)n, -CH3(CH2)n O, -COOX or -SO3X; R2 refers to -H, -CH3(CH2)n, -CH3(CH2)n O, -COOX or -SO3X; R3 refers to -H, -CH3(CH2)n, -CH3(CH2)n O, -COOX or -SO3X; R4 refers to -H, -CH3(CH2)n, -CH3(CH2)n O, -COOX or -SO3X; R5 refers to -(CH2)<n+1>-; and X can be Na, K or Li. On one hand, the black reactive dye semi-finished product has a bisazo structure, and the fixation rate and deep dyeing property of the product can be improved; on the other hand, the black reactive dye semi-finished product comprises multiple sulfonated groups, can achieve the effects similar to a surfactant, is conveniently compound and mixed with other organic matters and is dissolved in water to prepare a dye solution.

Description

technical field [0001] The invention belongs to the field of organic dyes and relates to a dye semi-finished product, in particular to a reactive black dye semi-finished product, a preparation method and an application thereof. Background technique [0002] Reactive dyes, also known as reactive dyes, are a class of dyes that chemically react with fibers during dyeing. Such dye molecules contain groups that can chemically react with fibers. When dyeing, the dyes react with the fibers and form covalent bonds between them to form a whole, which improves the fastness to washing and rubbing. [0003] The Chinese invention patent with application number 201110294102.5 discloses a reactive black dye mixture, including 65%~50% reactive black dye, 35%~20% reactive orange dye and 20~10% additives. Although the dye mixture of the invention has a high color yield on the fiber, and the uncolored part of the fiber is very easy to clean; but it has three components, and it needs to be fo...

AI Technical Summary

Problems solved by technology

Although the dye mixture of the invention has a high color yield on the fiber, and the uncolored part of the fiber is very easy to clean; but it has three components, and it needs to be formulated with auxiliary agents, which not only increases the cost of the dye , and the auxiliary agent is a common anionic surfactant, which tends to generate more foam during the dyeing process, which increases the difficulty of cleaning the cloth