Thiol derivative dyes
AssigneeCiba Corporation
InventorsVictor Paul Eliu, Beate Fröhling, Dominique Kauffmann
Life of this patent
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Abstract
Disclosed are thiol dyes of formula (1) wherein L1 is hydrogen; C1-C12alkyl; or phenyl-C1-C4alkyl; X is C1-C12alkylene, C2-C12alkenylene, C5-C10cycloalkylene, C5-C10arylene, or C5-C10arylene-C1-C10alkylene, which may by interrupted by —O—, —NH—, —S—, —CO—, o-SO2—; Y is the residue of an organic dye Z is a group of formula (1b) or —C≡N; wherein A is O; S; or N-L2; B is L3; —OL3; —NL3L4; or —SL3; and L2, L3 and L4, independently from other are hydrogen; C1-C12alkyl; C5-C12aryl-C1-C12alkyl. The compounds are useful for the dyeing of organic materials, such as keratin fibers, preferably human hair.
Claims14
Compounds of formula (1)
- wherein
- L1 is hydrogen;
- C1-C12alkyl;
- or phenyl-C1-C4alkyl;
- X is C1-C12alkylene, C2-C12alkenylene, C5-C10cycloalkylene, C5-C10arylene, or C5-C10arylene-C1-C10alkylene, which may by interrupted by —O—, —NH—, —S—, —CO—, or —SO2—;
- Y is the residue of an organic dye.
- Z is a group of formula
- or —C≡N;
- wherein
- A is O;
- S;
- or N-L2;
- B is L3;
- —OL3;
- —NL3L4;
- or —SL3;
- and
- L2, L3 and L4, independently from each other are hydrogen;
- C1-C12alkyl;
- C6-C12aryl;
- or C6-C12aryl-C1-C12alkyl.
Dependencies are inferred from the claim text.