Hydrolysis retardant for liquid active dye and method for making same

Abstract

The invention discloses a liquid reactive dye hydrolysis inhibitor and a preparation method thereof. The components and weight content of the liquid reactive dye hydrolysis inhibitor of the present invention include: sodium dihydrogen phosphate 0.05% to 0.6%, disodium hydrogen phosphate 0.025% to 0.3%, sodium nitrite, sodium chlorate or anti-staining salt 0.05% ~0.8%, water balance. The inhibitor of the present invention can significantly improve the hydrolysis stability of the liquid reactive dye. After adding the hydrolysis inhibitor of the present invention to the liquid reactive dye, the pH value of the reactive brilliant red K-2BP aqueous solution does not change substantially after being placed for 360 days. Reactive Red M-SB, Reactive Yellow K-RN, Reactive Yellow K-6G, Reactive Orange K-GN, Reactive Blue K-GRS, Reactive Blue K-3R, Reactive Blue K-R, Reactive Turquoise K-GL, Reactive Purple K-R There is a similar situation with reactive black K-BR. This phenomenon shows that the inhibitor of the present invention can significantly prevent the hydrolysis of reactive dyes.

Description

technical field [0001] The invention relates to an additive for liquid reactive dyes, in particular to a hydrolysis inhibitor for liquid reactive dyes and a preparation method thereof. Background technique [0002] Reactive dyes have the characteristics of complete color spectrum, bright color and good color fastness, so they are widely used in printing and dyeing of fabrics. [0003] In the printing process of reactive dyes, the main factor that affects and restricts the output and quality of reactive dye printing is the traditional reactive dye sizing process. Traditional reactive dye paste mixing, due to human factors, it is difficult to ensure the accuracy of the measurement of each component in the reactive dye printing paste, and it is difficult to ensure the quality stability of printed products. At the same time, due to the low work efficiency of the traditional reactive dye mixing process, printing machines are often encountered in production. This phenomenon also ...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved in the present invention is to disclose a liquid reactive dye hydrolysis inhibitor and its preparation method, so as to overcome the defects of poor chemical stability in the prior art and meet the needs of the printing and dyeing industry

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