Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Patent
1999-02-26
2000-05-16
Liott, Caroline D.
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
8407, 8423, 8572, 8574, A61K 713
Patent
active
060631368
DESCRIPTION:
BRIEF SUMMARY
The subject-matter of the invention is a composition for the oxidation dyeing of keratinous fibres, in particular human keratinous fibres, such as hair, comprising, as coupler, at least one pyrrolooxazole compound and at least one oxidation base.
It is known to dye keratinous fibres and in particular human hair with dyeing compositions comprising oxidation dye precursors, in particular ortho- or para-phenylenediamines, ortho- or para-aminophenols, or heterocyclic compounds, generally known as oxidation bases. Oxidation dye precursors or oxidation bases are colourless or weakly coloured compounds which, in combination with oxidizing products, can give rise, by an oxidative coupling process, to coloured and colouring compounds.
It is also known that it is possible to vary the shades obtained with these oxidation bases by combining them with couplers or colouring modifiers, the latter being chosen in particular from aromatic meta-diamines, meta-aminophenols, meta-diphenols and certain heterocyclic compounds, such as indole compounds.
The variety of the molecules involved as oxidation bases and couplers makes it possible to obtain a rich palette of colours.
The so-called "permanent" colouring obtained by virtue of these oxidation dyes has, however, to satisfy a certain number of requirements. Thus, it must be without disadvantage toxicologically and it must make it possible to obtain shades with the desired intensity and behave well in the face of external agents (light, bad weather, washing, permanent waving, perspiration or rubbing).
The dyes must also make it possible to cover white hair and, finally, be as non-selective as possible, that is to say make it possible to obtain the smallest possible differences in colouring along the same keratinous fibre, which can in fact be differently sensitized (i.e. damaged) between its tip and its root.
The Applicant Company has now just discovered that it is possible to obtain powerful novel dyes, which are not very selective, which are particularly resistant and which are capable of generating intense colourings in varying shades, by using, as couplers, pyrrolooxazole compounds in the presence of an oxidation base.
This discovery forms the basis of the present invention.
The subject-matter of the invention is a composition for the oxidation dyeing of keratinous fibres and in particular of human keratinous fibres, such as hair, characterized in that it comprises, in a medium appropriate for dyeing: and/or at least one of their addition salts with an acid: ##STR2## in which: R.sub.1 represents a hydrogen atom; a halogen atom, such as bromine, chlorine or fluorine; an alkoxy radical (such as, for example: methoxy, ethoxy, propyloxy, benzyloxy, methoxyethoxy, phenoxyethoxy, 2-cyanoethoxy, phenethyloxy, p-chlorobenzyloxy or methoxyethylcarbamoylmethoxy); an aryloxy radical (such as, for example: phenoxy, 4-methoxyphenoxy, 4-nitrophenoxy, 4-cyanophenoxy, 4-methanesulphonamidophenoxy, 4-methanesulphonylphenoxy, 3-methylphenoxy or 1-naphthyloxy); an acyloxy radical (such as, for example: acetoxy, propanoyloxy, benzoyloxy, 2,4-dichlorobenzoyloxy, ethoxyoxaloyloxy, pyruvoyloxy, cinnamoyloxy or myristoyloxy); an arylthio radical (such as, for example: phenylthio, 4-carboxyphenylthio, 2-ethoxy-5-tert-butylphenylthio, 2-carboxyphenyl-thio or 4-methanesulphonylphenylthio); an alkylthio radical (such as, for example: methylthio, ethylthio, propylthio, butylthio, 2-cyanoethylthio, benzylthio, phenethylthio, 2-(diethylamino)ethylthio, ethoxyethylthio or phenoxyethylthio); a heteroarylthio radical (such as, for example: 5-phenyl-2,3,4,5-tetrazolylthio or 2-benzothiazolylthio); a heteroaryloxy radical (such as, for example: 5-phenyl-2,3,4,5-tetrazolyloxy or 2-benzothiazolyloxy); a thiocyano radical; an alkyloxythiocarbonylthio radical (such as dodecyloxythiocarbonylthio); a sulphonamido radical (such as benzenesulphonamido or N-ethyltoluenesulphonamido); a pentafluorobutanamido radical; a 2,3,4,5,6-pentafluorobenzamido radical; a pyrazolyl radical; an imidazolyl radical; a triazolyl rad
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Malle Gerard
Vidal Laurent
L'Oreal S.A.
Liott Caroline D.
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