Composite black disperse dye

Abstract

The invention provides a composite black disperse dye, which mainly comprises one or more blue components shown by a structural formula (I), one or more of yellow component B shown by a structural formula (II), one or more blue component C shown by a structural formula (III) and one or more red component D shown by a structural formula (IV), wherein based on the total weight of the components A, B, C and D, the components A account for 30 to 85 percent, the components B account for 1 to 45 percent, the components C account for 1 to 30 percent and the components D account for 1 to 30 percent. When the composite black disperse dye of the invention is used to dye a hydrophobic fiber material, a black dyed fabric which is bright in luster, high in rubbing fastness and desirable in color can be obtained by adjusting the proportion of the components. The composite black disperse dye is economic and environmentally-friendly and has excellent dying performance.

Description

(1) Technical field [0001] The invention relates to a composite disperse black dye, in particular to a disperse black dye composition containing a specific structure which is suitable for printing and dyeing hydrophobic fiber materials, especially polyester fiber materials. (2) Background technology [0002] Since the 1970s, disperse dyes have developed rapidly. In recent years, although the development of new varieties of disperse dyes in my country has been relatively slow compared with previous years, many difficult varieties have been successfully developed and industrialized, and the quality is close to similar foreign products. Dark colors, especially dark blue to black disperse dyes are mostly compound varieties, because varieties with a single structure often have the disadvantages of insufficient dyeing depth, lifting power, and poor fastness performance, so using different disperse dyes to compound is the best way to obtain black disperse dyes. It is an effective w...

AI Technical Summary

Problems solved by technology

In addition, for general black dyed matter, when the light source changes, it is easy to cause color change, that is, the color rendering of the dye still needs to be improved.

At present, due to the large amount of disperse dark blue and black dyes, there are many patent reports on various compounding and blending, such as U.S. Patent US6159249, Korean Patent KR0156834B, etc. disclose the preparation of composite black disperse dyes by compounding azo dyes technology, but there are problems such as dyeing performance and economy that are still not ideal, especially the outbreak of the financial crisis in recent years, which puts forward higher requirements for the cost performance of dyes

Images