Method for fabricating improved composite active black dyestuff

Abstract

The improved compound reactive black dye manufacturing method relates to the field of dyes. The synthetic reactive navy blue solution and reactive orange solution are mixed and evenly sprayed and dried. In this wet blending process, the reactive orange dye does not need to be salted out and is directly blended with the solution without Salt-out sewage is produced, and the solubility is greatly improved; the hue is similar to the reactive black KN-G2RC, which solves the shortcomings of KN-G2RC that cannot dye dark colors and the lifting power is not high; the solubility of the product reactive black reaches 180-200 g / L, and the lifting power High, good blackness, good level dyeing, dyeing cloth is not flowery, can dye dark colors, light fastness reaches 4 grades, soaping fastness 4-5 grades, rubbing fastness 4 grades, ironing fastness 4- Level 5.

Description

technical field [0001] The invention relates to the field of dyes, and refers to a new method for manufacturing composite reactive black dyes. technical background [0002] The traditional reactive black dye is to mix the synthetic reactive navy blue and reactive orange after salting out and drying. The defects of this process are: 1. It takes up a lot of equipment; 2. Solid-liquid separation will generate a lot of sewage, which is not conducive to environmental protection; 3. The yield of mixed products is low, the solubility is only 80-100 g / L, the lifting power is not enough when applied, the level dyeing property is not good, it cannot dye dark colors, and it is easy to dye flowers. Contents of the invention [0003] The present invention just aims at overcoming above-mentioned deficiency, provides a kind of improved compound reactive black dyestuff manufacture method, the product produced by this method has bright color, high solubility, low directness, good compatibi...

AI Technical Summary

Problems solved by technology

[0002] The traditional reactive black dye is to mix the synthetic active navy blue and active orange after salting out and drying. The defects of this process are: 1. It takes up a lot of equipment; 2. Solid-liquid separation will generate a lot of sewage, which is not conducive to environmental protection; 3. The yield of mixed products is low, the solubility is only 80-100 g / L, the lifting force is not enough when applied, the level dyeing property is not good, it cannot dye dark colors, and it is easy to dye flowers

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