Process for dyeing and printing fiber materials celulosicas with dye vats, dyeing aqueous baths or printing pastes.Materials celulosicas fibers and prepared dye vats

摘要

Process for dyeing and printing cellulosic fiber materials with vat dyes in the presence of enediols as reducing agents and alkali, using in addition small amount of organic water-miscible solvents, for example low molecular weight alcohols, when reducing the vat dyes. The vatting of the vat dyes proceeds uniformly and completely within a relatively short time, and the resulting vat dyes are reproducible and notable for high levelness and fastness properties.