Active yellow dye and its built brown active dye

Abstract

This is active yellow dyestuff belonging to dyestuff field. Make 2, 4 - diaminobenzene sulphonate sodium have acid coupling with diazo-compound produced by the reaction at 0 - 10 Deg. C of sulphonated p-(-beta-sulfatoethylsulfonyl -)- aniline, hydrochloric acid and sodium nitrite. Then the produce of acid coupling will have alkaline coupling at 5 - 10 Deg. C with the diazo-compound produced by the reaction of p-(-beta-sulfatoethylsulfonyl -)- aniline, hydrochloric acid and sodium nitrite. The pH of aniline coupling is controlled at 5 - 7. Directly dry the product to get active yellow dyestuff after coupling finished. Advantages: vivid color and luster, high solubility, low substantivity, good matching, good reappearing, good equal dying, high promotion rate, high color fixing rate, easy wash and good color fixing degree.

Description

technical field [0001] The invention relates to the field of dyes, in particular to reactive yellow dyes and brown reactive dyes compounded by the reactive yellow dyes. technical background [0002] Traditional active red brown K-B 3 The production process of R is: the diazonium salt reacted with anthranilic acid, hydrochloric acid and sodium nitrite is subjected to alkaline coupling with J acid, and after the coupling is completed, the salting-out filter cake is prepared with chromium sulfate, salicylic acid, NaOH and ammonia water High-temperature chromizing reaction with high-temperature chromating agent, which is formed by secondary condensation reaction with the condensate of cyanuric chloride and p-(β-sulfate ethyl sulfone) aniline after the chromating reaction. The disadvantage of this process is: complex process , The solubility of the dye is only 30 g / L, which produces a lot of sewage. During the application process, the dye shows that the lifting power is not eno...

AI Technical Summary

Problems solved by technology

[0002] Traditional active red brown K-B 3 The production process of R is: the diazonium salt reacted with anthranilic acid, hydrochloric acid and sodium nitrite is subjected to alkaline coupling with J acid, and after the coupling is completed, the salting-out filter cake is prepared with chromium sulfate, salicylic acid, NaOH and ammonia water High-temperature chromizing reaction with high-temperature chromating agent, which is formed by secondary condensation reaction with the condensate of cyanuric chloride and p-(β-sulfate ethyl sulfone) aniline after the chromating reaction. The disadvantage of this process is: complex process , the solubility of the dye is only 30 g / L, resulting in a large amount of sewage

During the application process, the dye shows that the lifting power is not enough, the leveling property is not good, and the dark color cannot be dyed

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