Abstract: A composition comprising (a) 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-C12-hydrocarbon, (b) 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 C6-C30aralkyl, A? is halogenide, nitrate, hydrogensulfate or sulfonate, and (c) an alkoxylated fatty alcohol, is suitable as shade enhancer for the EL portion in PA/EL blends in the dyeing process using dark shade dyes.

Abstract: A composition comprising (a) a betaine of formula (1), wherein R1 is a monovalent radical of an aliphatic C4-C30 hydrocarbon, R2 and R3 independently of one another represent C1-C12 alkyl and X and Y independently of one another denote a bivalent radical of an aliphatic C1-C12 hydrocarbon, (b) 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-C12 alkyl, C5-C24 aryl or C6-C30 aralkyl, A? is halogemde, nitrate, hydrogensulfate or sulfonate, and (c) an alkoxylated fatty alcohol, is suitable as shade enhancer for the EL portion in PA/EL blends in the dyeing process using dark shade dyes.

Abstract: The invention relates to a process for dyeing polyester fibre material according to the exhaust method, which process comprises the following steps: (a) pre-treatment of the fibre material with one or more surfactants, (b) dyeing with one or more disperse dyes, and (c) reductive after-treatment with a hydroxyalkylsulfinic acid or a hydroxyalkylsulfinic acid salt, wherein steps (a), (b) and (c) are carried out in succession in a single liquor.

Abstract: The invention relates to an auxiliary composition comprising (A) from 5 to 95% by weight, based on the total composition, of at least one compound of formula (1a) or (1b) Y1—X—Y2??(1a) A1A2N—OH??(1b) wherein X is a divalent aliphatic, aromatic, araliphatic or cycloaliphatic radical, Y1 and Y2 are each independently of the other —OH, —CO—OR1, —NR1R2, —CO—NH—NR1R2 or —NH—CO—NH—NR1R2, wherein R1 and R2 are each independently of the other hydrogen, C1-C20alkyl, C1-C20alkoxy, C5-C24cycloalkyl, C5-C30aryl or C6-C36aralkyl, it being possible for the alkyl, alkoxy, cycloalkyl, aryl or aralkyl groups to be unsubstituted or substituted by one or more hydroxy, amino, sulfo or carboxyl groups or halogen atoms, A1 and A2 are each independently of the other C1-C20alkyl or C6-C36aralkyl; (B) from 0 to 95% by weight, based on the total composition, of one or more anionic or non-ionic surfactants or dispersants; and (C) from 0 to 85% by weight, based on the total composition, of a solid, inorganic or organi

Abstract: The invention relates to a method of improving the thermal stability of natural or synthetic polyamide fibre materials that are undyed, fluorescent whitened or dyed with reactive or disperse dyes, with the exception of metal complex dyes, wherein the fibre material is treated with a liquor comprising a compound of formula (1) Y1—X—Y2 (1) wherein X is a divalent aliphatic or cycloaliphatic radical and Y1 and Y2 are each independently of the other —OH, —CO—OR1, —NR1R2, —CO—NH—NR1R2 or —NH—CO—NH—NR1R2, wherein R1 and R2 are each independently of the other hydrogen; Q-C?alkyl unsubstituted or substituted by one or more hydroxy, amino or carboxyl groups or halogen atoms; C5-C24-aryl unsubstituted or substituted by one or more hydroxy, amino or carboxyl groups or halogen atoms; C6-C36aralkyl unsubstituted or substituted by one or more hydroxy, amino or carboxyl groups or halogen atoms; or C5-C24cycloalkyl unsubstituted or substituted by one or more hydroxy, amino or carboxyl groups or halogen atoms.

Abstract: The invention relates to a process for dyeing polyester fibre material according to the exhaust method, which process comprises the following steps: (a) pre-treatment of the fibre material with one or more surfactants, (b) dyeing with one or more disperse dyes, and (c) reductive after-treatment with a hydroxyalkylsulfinic acid or a hydroxyalkylsulfinic acid salt, wherein steps (a), (b) and (c) are carried out in succession in a single liquor.

Abstract: A process is described for dyeing wool-containing fibre materials with anionic dyes, which comprises dyeing said materials in the presence of a wool protective agent containing at least one acrylamide homo- or copolymer. Rubfast level dyeings having reduced setting can be obtained according to this process.