Dark Coloured Azo Dyes
AssigneeThe Procter & Gamble Company
InventorsMarkus SPECKBACHER, Jessica Chassot, Hans-Jürgen Braun
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Abstract
The present invention relates to a) a non-oxidative colouring agent for keratin fibres, in particular human hair, comprising at least one dye according to formula (I) or (II), b) an oxidative colouring agent for keratin fibres, in particular human hair, which comprises at least one oxidizing agent (e.g. hydrogen peroxide), at least one oxidative dye precursor and at least one dye according to formula (I) or (II), and c) a lightening agent for keratin fibres, in particular human hair, which comprises at least one oxidizing agent (e.g. hydrogen peroxide) and at least one dye according to formula (I) or (II), with R4 being a cationic group.
Claims19
An agent for the oxidative colouring of keratin fibres, comprising at least one oxidizing agent and at least one oxidative dye precursor and at least one dye selected from the group consisting of 2-[{4-[(E)-{5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-4-(1-piperidinyl)-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl hydrogen sulfate, sodium 2-[{4-[(E)-{5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-4-(1-piperidinyl)-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl sulfate, 2-[{4-[(E)-{5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-4-(1-pyrrolidinyl)-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl hydrogen sulfate, sodium 2-[{4-[(E)-{5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-4-(1-pyrrolidinyl)-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl sulfate, 2-[{4-[(E)-{4-chloro-5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl hydrogen sulfate, sodium 2-[{4-[(E)-{4-chloro-5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl sulfate and 2-[{4-[(E)-(4-chloro-5-formyl-1,3-thiazol-2-yl)diazenyl]phenyl}(ethyl)amino]ethyl hydrogen sulfate.
An agent for the non-oxidative colouring of keratin fibres, comprising at least one dye selected from the group consisting of:
- 2-[{4-[(E)-{5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-4-(1-piperidinyl)-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl hydrogen sulfate, sodium 2-[{4-[(E)-{5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-4-(1-piperidinyl)-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl sulfate, 2-[{4-[(E)-{5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-4-(1-pyrrolidinyl)-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl hydrogen sulfate, sodium 2-[{4-[(E)-{5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-4-(1-pyrrolidinyl)-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl sulfate, 2-[{4-[(E)-{4-chloro-5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl hydrogen sulfate, sodium 2-[{4-[(E)-{4-chloro-5-[(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl]-1,3-thiazol-2-yl}diazenyl]phenyl}(ethyl)amino]ethyl sulfate and 2-[{4-[(E)-(4-chloro-5-formyl-1,3-thiazol-2-yl)diazenyl]phenyl}(ethyl)amino]ethyl hydrogen sulfate.
A dye having the follow structure:
- wherein R4 is selected from chlorine,
- R3 is selected from formyl or
- and
- Y is selected from hydrogen, sodium or potassium.
Dependencies are inferred from the claim text.