Substances for dyeing keratinous fibers

Details Substances for dyeing keratinous fibers Substances for dyeing keratinous fibers

A - Human Necessities

61

K

A61K 8/33 (2006.01) A61Q 5/10 (2006.01)

Patent

CA 2662460

Disclosed are substances which contain unsaturated, non-aromatic dialdehydes of formula (Ia) and/or the tautomer (Ib) thereof, wherein R1, R2, and R3 are defined as indicated in claim 1, along with at least one CH-acidic compound of formulas (II) and/or (III), wherein R6, R7, R8, R9, R10, Y, X-, Het, and X1 are defined as indicated in claim 1, in a cosmetic carrier. Said substances color keratinous fibers, especially human hair, in an intensive, colorfast, natural brown shade.

L'invention concerne des agents contenant, dans un support cosmétique, des dialdéhydes insaturés non aromatiques de formule (Ia) et/ou leurs tautomères de formule (Ib), formules dans lesquelles R1, R2 et R3 sont tels que définis dans la première revendication, ainsi qu'au moins un composé CH-acide de formule (II) et/ou (III), formules dans lesquelles R6, R7, R8, R9, R10, Y, X-, Het et X1 sont tels que définis dans la première revendication. Les agents selon l'invention permettent de colorer des fibres kératiniques, en particulier les cheveux humains, dans un ton de brun naturel intense et résistant.

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