Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2000-09-20
2003-03-25
Gupta, Yogendra N. (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S409000, C008S412000, C008S421000, C008S426000, C008S594000, C008S650000, C132S208000
Reexamination Certificate
active
06537328
ABSTRACT:
The subject of the invention is a composition for the oxidation dyeing of keratinous fibres, and in particular of human keratinous fibres such as hair, comprising, in a medium appropriate for dyeing, at least one oxidation dye, at least one acidic direct dye and at least one enzyme of the laccase type, as well as the dyeing method using this composition.
It is known to dye keratinous fibres, and in particular human hair, with dyeing compositions containing oxidation dye precursors, in particular ortho- and para-phenylenediamines, ortho- or para-aminophenols, heterocyclic bases generally called oxidation bases. The oxidation dye precursors, or oxidation bases, are colourless or weakly coloured compounds which, combined with oxidizing products, can give rise to dye and coloured compounds by a process of oxidative condensation.
It is also known that the shades obtained with these oxidation bases can be varied by combining them with couplers or colour modifiers, the latter being chosen in particular from aromatic meta-diamines, meta-aminophenols, meta-diphenols and certain heterocyclic compounds.
The variety of molecules used in oxidation bases and couplers allows a rich palette of colours to be obtained.
It is also known that to further vary the shades obtained and to provide them with shimmer, it is possible to use, in combination with oxidation dye precursors and couplers, direct dyes, that is to say coloured substances which provide a colour in the absence of oxidizing agent.
The vast majority of these direct dyes belong to the family of nitro compounds of the benzene series and have the disadvantage, when they are incorporated into dyeing compositions, of leading to colours with insufficient fastness, in particular towards shampoos.
The so-called “permanent” colour obtained by means of these oxidation dyes should moreover satisfy a number of requirements. Thus, it should have no drawbacks from the toxicological point of view, it should make it possible to obtain shades of the desired intensity and it should exhibit good resistance towards external agents (light, adverse weather conditions, washing, permanent waving, perspiration, rubbing).
The dyes should also make it possible to cover grey hair, and thus should be the least selective possible, that is to say they should make it possible to obtain the smallest possible differences in colour all along the same keratinous fibre, which may indeed be differently sensitized (i.e. damaged) between its tip and its root.
The oxidation dyeing of keratinous fibres is generally carried out in an alkaline medium, in the presence of hydrogen peroxide. However, the use of alkaline media in the presence of hydrogen peroxide has the disadvantage of causing substantial degradation of the fibres, as well as decolouring of the keratinous fibres which is not always desirable.
The oxidation dyeing of keratinous fibres can also be carried out with the aid of oxidizing systems different from hydrogen peroxide such as enzymatic systems. Thus, it has already been proposed in U.S. Pat. No. 3,251,742, Patent Applications FR-A-2,112,549, FR-A-2,694,018, EP-A-0,504,005, WO95/07988, WO95/33836, WO95/33837, WO96/00290, WO97/19998 and WO97/19999 to dye keratinous fibres with compositions comprising at least one oxidation dye in combination with enzymes of the laccase type, the said compositions being brought into contact with atmospheric oxygen. These dyeing formulations, although used under conditions which do not cause degradation of the keratinous fibres comparable to that caused by dyeings carried out in the presence of hydrogen peroxide, lead to colours which are still inadequate both from the point of view of homogeneity of the colour distributed along the fibre (“unison”), from the point of view of chromaticity (luminosity) and of the dyeing power.
The aim of the present invention is to solve the problems mentioned above.
The applicant has now just discovered that it is possible to obtain novel dyes which are capable of giving intense and chromatic colours, without causing significant degradation of the keratinous fibres, which are not very selective and which are quite resistant to various attacks to which the fibres may be subjected, by combining at least one oxidation dye, at least one acidic direct dye comprising in its structure at least one sulphonic function or at least one carboxyl function, and at least one enzyme of the laccase type.
This discovery forms the basis of the present invention.
The first subject of the invention is therefore a ready-to-use composition for the oxidation dyeing of keratinous fibres, and in particular human keratinous fibres such as hair, characterized in that it comprises, in a medium appropriate for dyeing:
at least one oxidation dye,
at least one acidic direct dye comprising in its structure at least one sulphonic function or at least one carboxyl function,
at least one enzyme of the laccase type.
The ready-to-use dyeing composition in accordance with the invention gives intense and chromatic colours which exhibit low selectivity and excellent properties of resistance both to atmospheric agents such as light and adverse weather conditions and to perspiration and various treatments to which the hair may be subjected (washing, permanent deformation).
The subject of the invention is also a method for the oxidation dyeing of keratinous fibres using this ready-to-use dyeing composition.
The laccase(s) used in the ready-to-use dye composition in accordance with the invention may be chosen in particular from laccases of plant origin, animal origin, fungal origin (yeasts, moulds, fungi) or bacterial origin, organisms which may be of mono- or pluricellular origin. They can be obtained by biotechnology.
Among the laccases of plant origin which can be used according to the invention, there may be mentioned the laccases produced by plants which perform chlorophyll synthesis as indicated in Application FR-A-2,694,018 such as those found in the extracts of Anacardiaceae such as for example the extracts of
Magnifera indica, Schinus molle
or
Pleiogynium timoriense
, in the extracts of Podocarpaceae,
Rosmarinus off., Solanum tuberosum
, Iris sp., Coffea sp.,
Daucus carrota, Vinca minor, Persea americana, Catharenthus roseus
, Musa sp.,
Malus pumila, Gingko biloba, Monotropa hypopithys
(Indian pipe), Aesculus sp.,
Acer pseudoplatanus, Prunus persica, Pistacia palaestina.
Among the laccases of fungal origin optionally obtained by biotechnology which can be used according to the invention, there may be mentioned the laccase(s) derived from Polyporus versicolor,
Rhizoctonia practicola
and
Rhus vernicifera
as, indicated in Applications FR-A-2,112,549 and EP-A-504005, those described in Patent Application WO95/07988, WO95/33836, WO95/33837, WO96/00290, WO97/19998 and WO97/19999, whose content is an integral part of the present description, such as for example those derived from Scytalidium,
Polyporus pinsitus, Myceliophtora thermophila, Rhizoctonia solani, Pyricularia orizae
, or variants thereof. There may also be mentioned those derived from Tramates versicolor,
Fomes fomentarius, Chaetomium thermophile, Neurospora crassa, Coriolus versicol, Botrytis cinerea, Rigidoporus lignosus, Phellinus noxius, Pleurotus ostreatus, Aspergillus nidulans, Podospora anserina, Agaricus bisporus, Ganoderma lucidum, Glomerella cingulata, Lactarius piperatus, Russula delica, Heterobasidion annosum, Thelephora terrestris, Cladosporium cladosporiodes, Cerrena unicolor, Coriolus hirsutus, Ceriporiopsis subvermispora, Coprinus cinereus, Panaeolus papilionaceus, Panaeolus sphinctrinus, Schizophyllum commune, Dichomitius squalens
and variants thereof.
The laccases of fungal origin optionally obtained by biotechnology will be preferably chosen.
The enzymatic activity of the laccases of the invention which have syringaldazine among their substrates can be defined from the oxidation of syringaldazine under aerobic conditions. The lacu unit corresponds to the quantity of enzyme catalysing the conversion of 1 mmol of syringaldazine per minute at
Cotteret Jean
Lang Gerard
Elhilo Eisa
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Gupta Yogendra N.
L'Oreal (S.A.)
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