Dyeing assistant and use thereof in dyeing synthetic fibre material
AssigneeCiba-Geigy Corporation
InventorsHeinz Abel, Paul Schafer, Hans-Ulrich Berendt
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Abstract
The invention relates to a dyeing assistant comprising at least (A) an O-cyanoethylated compound of the formula R(O--CH.sub.2 CH.sub.2 CN).sub.n, (1) wherein R is an n-valent aliphatic, cycloaliphatic or araliphatic radical, and n is 1 to 5, (B) an anionic surfactant (C) a non-ionic surfactant and optionally at least one of the following components (D) an aliphatic alcohol containing 5 to 18 carbon atoms, a siloxane-oxyalkylene copolymer or a mixture thereof, and (E) a polar solvent. This assistant is used in particular for dyeing synthetic fibre material, preferably polyester fibres, to improve levelness and crockfastness and to increase the dye yield.
Claims23
A dyeing assistant which comprises at least
- (A) an O-cyanoethylated compound of the formula
- R(O--CH.sub.2 CH.sub.2 CN).sub.n, (1)
- wherein R is an n-valent aliphatic, cycloaliphatic or araliphatic radical, and n is 1 to 5,
- (B) an anionic surfactant, and
- (C) an non-ionic surfactant.
A process for dyeing synthetic fibre material with cationic or disperse dyes or for whitening such material with fluorescent whitening agents, which process comprises dyeing or whitening said material in the presence of an assistant composition which contains at least
- (A) an O-cyanoethylated compound of the formula
- R(O--CH.sub.2 CH.sub.2 CN).sub.n, (1)
- wherein R is an n-valent aliphatic, cycloaliphatic or araliphatic radical, and n is 1 to 5,
- (B) an anionic surfactant, and
- (C) a non-ionic surfactant.
Dependencies are inferred from the claim text.