LEVELLING AUXILIARIES FOR ACID DYES

摘要

A levelling auxiliary for dyeing fibrous material of polyamide fibers with acid dyes in the acid pH range in the presence of a mixture which contains (based on the solids in each case) from 30 to 90% by weight of a surfactant having sulfonic acid groups and from 10 to 70% by weight of an oxyethylated polyamide which has been prepared by the reaction of 1 part by weight of polyamide with from 2.5 to 3.5 parts by weight of ethylene oxide. Level dyeings devoid of streaks are obtained.