Dyeing Auxiliary

Abstract

This invention relates to a process for dyeing blends of elastane and natural or synthetic polyamide or cellulose fibres which comprises treating said fibres with an aqueous liquor containing composition comprising a betaine of formula wherein R1 is a monovalent radical of an aliphatic C4-C30-hydrocarbon, R2 and R3 independently of one another represent C1-C12alkyl and X and Y independently of one another denote a bivalent radical of an aliphatic C1-C12hydrocarbon, a quaternary ammonium salt of formula (2) wherein R4 is a monovalent radical of an aliphatic C4-C30-hydrocarbon, R5, R6 and R7 independently of one another represent C1-C12alkyl, C5-C24aryl or C6C30aralkyl, A is halogenide, nitrate, hydrogensulfate or sulfonate, (C) an alkoxylated fatty alcohol, and (d) at least one dye.