Dyeing auxiliaries, and process for the dyeing of cellulose fibres

摘要

Products of the reaction of primary or secondary amines or polyamines with cyanamide, dicyandiamide, guanidine or a derivative thereof or of ammonia with cyanamide or dicyandiamide (A) are reacted with N-methylol compounds of ureas, melamines, triazones, urones, carbamates or acid amides (B). They are agents for improving the wet-fastness properties of dyeings of textiles containing or comprising cellulose fibres with direct dyes and are suitable for fixing non-bonded reactive dyes in dyeings using this type of dye.