Composition comprising at least one mixed dye comprising at least one chromophore chosen from compounds of the methine family and/or the carbonyl family, dyeing process and kit, and mixed dyes
AssigneeL'oreal
InventorsAndrew Greaves, Hervé David, Henri Samain
Life of this patent
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Abstract
The present invention relates to a dye composition including at least one mixed dye containing at least one chromophore of methine or carbonyl type or their combinations. The invention furthermore relates to a process for dyeing keratin fibers, especially human keratin fibers, such as the hair, using the composition, and also to a suitable kit. The invention also relates to the abovementioned mixed dyes per se.
Claims32
A dye composition comprising, in a medium suitable for dyeing keratin fibers, at least one mixed dye comprising at least two different chromophores, wherein the chromophores are chosen from compounds of the methine family, from compounds of the carbonyl family, and from combinations thereof;
- and further wherein the at least two chromophores are linked together via at least one linker group that stops delocalization of the electrons of each of the chromophores;
- with the proviso that the composition does not comprise a mixed dye comprising two chromophores of the methine family, at least one of which bears a quinolinium group, or a dye of the following formula:
A process for dyeing keratin fibers, comprising:
- a) applying a dye composition to wet or dry fibers, optionally in the presence of at least one oxidizing agent,
- b) leaving the composition on the fibers for a time that is sufficient to obtain a desired coloration,
- c) optionally rinsing the fibers,
- d) washing and rinsing the fibers, and
- e) drying the fibers or leaving the fibers to dry,
- wherein said dye composition comprises, in a medium suitable for dyeing keratin fibers, at least one mixed dye comprising at least two different chromophores, wherein the chromophores are chosen from compounds of the methine family, from compounds of the carbonyl family, and from combinations thereof;
- and further wherein the at least two chromophores are linked together via at least one linker group that stops delocalization of the electrons of each of the chromophores;
- with the proviso that the composition does not comprise a mixed dye comprising two chromophores of the methine family, at least one of which bears a quinolinium group, or a dye of the following formula:
A multi-compartment device comprising
- at least one first compartment comprising a dye composition comprising, in a medium suitable for dyeing keratin fibers, at least one mixed dye comprising at least two different chromophores, wherein the chromophores are chosen from compounds of the methine family, from compounds of the carbonyl family, and from combinations thereof;
- and further wherein the at least two chromophores are linked together via at least one linker group that stops delocalization of the electrons of each of the chromophores;
- with the proviso that the composition does not comprise a mixed dye comprising two chromophores of the methine family, at least one of which bears a quinolinium group, or a dye of the following formula:
- at least one second compartment comprising at least one oxidizing agent;
- wherein at least one of the compartments further optionally comprises at least one of
- at least one additional direct dye different from the mixed dye,
- at least one oxidation base, and
- at least one coupler.
A mixed dye comprising at least two different chromophores, wherein the chromophores are chosen from compounds of the methine family, from compounds of the carbonyl family, and from combinations thereof;
- and further wherein the at least two chromophores are linked together via at least one linker group that stops delocalization of the electrons of each of the chromophores;
- with the exception of a mixed dye comprising two chromophores of the family of methines, at least one of which bears a quinolinium group and a dye of the following formula:
Dependencies are inferred from the claim text.