Composite activity black dye

Abstract

The invention discloses composite activity black dye which comprises the following components by weight percentage: 60-80% of component A in formula (1), 5-10% of component B in formula (2), 5-10% of component C in formula (3), 5-10% of component D in formula (4), and 5-10% of component E in formula (5), wherein the component A, component B, component C, component D, component E, the formula (1), formula (2), formula (3), formula (4) and formula (5) are shown in the Specification. The composite activity black dye comprises the five components in a mixed manner, and the blackness of the dye is improved; in addition, the hydrophilia / lipophilicity and substantivity to fiber of the five components are similar, the dying and the fixation properties coordinate, the leveling property is excellent, and various fastnesses of the obtained dye are excellent.

Description

technical field [0001] The invention belongs to the technical field of dyes, in particular to a composite reactive black dye. Background technique [0002] In order to improve the wash fastness of dyes, people have been trying to create a dye that can be covalently bonded to the fiber. In 1956, the British ICI company first produced reactive dyes for cotton containing dichloro-s-triazine active groups. Since then, various countries in the world have successively developed and produced various types of reactive dyes. Currently, reactive dyes have developed into the most important class of dyes for cellulose fibers. [0003] Black dye has always been the most used variety in dyes. The color fastness of direct sun-resistant black dye is poor. Although sulfur black has good color fastness, it has environmental protection problems, so its application is subject to more and more restrictions. Therefore , Medium-temperature reactive black has become the first choice for cotton (v...

AI Technical Summary

Problems solved by technology

However, with reactive black 5 # with Active Orange 82 # The black dye obtained by blending has problems with level dyeing and reproducibility

This is due to Active Orange 82 # One end is a vinyl sulfone group, the other end is a dichloro-s-triazine active group, high reactivity, suitable for color absorption and color fixation at 30-40 °C, increasing the dyeing temperature, rapid coloring, easy color blooming; at the same time, it is heat-resistant and alkali-resistant and stable Poor, easily hydrolyzed

[0006] active orange 82 # with reactive black 5 # The reactive black dye obtained by mixing will be dyed at 60-65°C because of reactive orange 82 # The coloring of the components is too fast, resulting in color flowers on the surface of the cloth; due to the different degrees of hydrolysis of different dyes, there will be color changes, and the reproducibility is not good; the amount of hydrolysis of the dyes is large and the affinity is high, and the washability is poor, resulting in clouds during finishing. Problems such as color spots and low color fastness

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