Process for dyeing fibrous materials made of or containing wool
AssigneeCiba-Geigy Corporation
InventorsPhilippe Ouziel, Martin Kuhn
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Abstract
Described is a process for dyeing fibrous materials made of or containing wool with anionic dyes, which comprises dyeing these materials in the presence of a wool preservative comprising at least one compound of the formula R--O--CH.sub.2 --CH(OH)--CH.sub.2 --Y (1), where the variables are each as defined in the claims. The process makes available rub-fast level dyeings without deterioration in the quality of the wool.
Claims11
A process for dyeing a fibrous material made of or containing wool with an anionic dye, which comprises applying the anionic dye to the fibrous material in the presence of an effective fiber damage reducing amount of a wool preservative comprising at least one ether of the formula
- R--O--CH.sub.2 --CH(OH)--CH.sub.2 --Y (1),
- where Y is halogen and R is
- (a) the radical of a hydroxyl-containing ethylenically unsaturated compound,
- (b) the radical of a homo- or copolymer of hydroxyl-containing ethylenically unsaturated monomers with or without one or more comonomers,
- (c) the radical of a mono-, di-, tri-, oligo- or polysaccharide,
- (d) the radical of a monohydric C.sub.1 -C.sub.22 alkanol, ethylene glycol, propylene glycol or a polyhydric alcohol selected from the group consisting of glycerol, 1,1,1-tris(hydroxymethyl)propane, erythritol, pentaerythritol, arabitol, sorbitol and mannitol,
- (e) the radical of a polyglycerol derivative having a molecular weight .ltoreq.50,000, or
- (f) the radical of a polyglycol of the formula
- --(CH.sub.2 CH.sub.2 O).sub.s --(CH.sub.2 CH[CH.sub.3 ]O).sub.t --H(6),
- where s and t are each independently of the other a number from 0 to 200 and the sum (s+t) is >1.
Dependencies are inferred from the claim text.