Use of unsaturated aldehydes in dying fibers containing keratin

Details Use of unsaturated aldehydes in dying fibers containing keratin Use of unsaturated aldehydes in dying fibers containing keratin

C - Chemistry, Metallurgy

07

C

C07C 47/21 (2006.01) D06P 3/04 (2006.01) D06P 3/08 (2006.01) C07C 47/232 (2006.01) C07C 47/24 (2006.01) C07C 47/277 (2006.01) C07C 47/38 (2006.01) C07C 211/00 (2006.01) C07C 309/00 (2006.01) D06P 3/14 (2006.01) D06P 3/30 (2006.01)

Patent

CA 2288055

The invention relates to the use of unsaturated aldehydes of formulae (Ia) or (Ib), wherein R1, R2, R3 and R4 independently mean hydrogen, halogen, a C1-C4- alkoxy, C1-C4-alkyl, aryl radical or a C1-C4-alkoxy-C1-C4-aryl radical and n stands for 1 or 2, wherein R1 and R2, R1 and R3, R2 and R3 and R2 and R4 can form together with a residual molecule a ring with 5 to 7 units when n equals 1, in addition to the corresponding mono, bis or .omega.-alkoxy acetals, for the dying of fibers containing keratin, specially human hair.

L'invention concerne l'utilisation d'aldéhydes insaturés ayant les formules (Ia) et (Ib) dans lesquelles R?1¿, R?2¿, R?3¿ et R?4¿ désignent indépendamment les uns des autres hydrogène, halogène, un reste alcoxy C¿1?-C¿4?, un reste alkyle C¿1?-C¿4?, un reste aryle ou un reste alcoxy C¿1?-C¿4?-alkyle C¿1?-C¿4? et n vaut 1 ou 2, R?1¿ et R?2¿, R?1¿ et R?3¿, R?2¿ et R?3¿, ainsi que R?2¿ et R?4¿ pouvant former dans chaque cas conjointement avec la molécule résiduelle un composé cyclique ayant entre 5 et 7 chaînons, si n vaut 1, ainsi que des mono-, bis- et .omega.-alcoxyacétals correspondants pour colorer des fibres à base de kératine, notamment des cheveux naturels.

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