Single-step printing of cellulose fibers with triphen-dioxazine reactive dyes and with sodium acetate or sodium trichloro-acetate as alkali

摘要

On testing triphendioxazine reactive dyes it was found that they are unsuitable for almost all conventional single-step printing processes since they are not stable under these conditions.P PIn the course of the development of an uncomplicated single-step printing process for these dyes, it has been found according to the invention, then, that by replacing the customary fixing alkali (NaHCO.sub. 3) by stoichiometrically specific amounts of sodium acetate or sodium trichloroacetate or certain mixtures of sodium trichloroacetate and sodium acetate it is possible to fix triphendioxazine reactive dyes in full yields without change in hue. In addition, it is possible to print conventional print pastes.