Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
1999-12-21
2002-06-25
Hardee, John (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S407000, C008S408000, C008S424000, C008S646000, C008S648000, C008S649000
Reexamination Certificate
active
06409772
ABSTRACT:
The present invention relates to the use of hydroxystilbenes, to ready-to-use dye compositions containing them, to dyeing processes using them and to a multi-compartment device used for carrying out the said dyeing processes.
It is well known to use so-called “oxidation” dyes in compositions for dyeing the hair. These dyes have the advantage of leading to shades which give better coverage and which are faster than those obtained using so-called “direct” dyes. Nevertheless, the oxidation dyes currently used have the drawback of not being entirely harmless and thus entail potential risks of allergies.
The Applicant has investigated oxidation dyes which do not have these drawbacks and which give the hair a coloration with satisfactory resistance to light, washing, bad weather, perspiration and various treatments to which the hair may be subjected. Furthermore, oxidizing dyes are also sought which can be used in the context of enzymatic colorations and which can thus make it possible to avoid the use of oxidizing agents such as hydrogen peroxide, which can be the cause of substantial degradation of keratin fibres.
Japanese patent application No. 64-38009 describes the use of hydroxystilbenes as tyrosinase inhibitors and discloses depigmenting compositions containing hydroxystilbenes.
The Applicant has just discovered, and this forms the subject of the invention, that the use of hydroxystilbenes as oxidation dye precursors in dye compositions makes it possible to obtain a wide range of colorations, the said colorations having particularly noteworthy resistance to light, washing, bad weather and perspiration.
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CAPLUS Abstract of Donnelly et al, “Enzyme-mediated hydrogen eproxide oxidation of (E)-stilbene-3,4-diol,” J. Chem. Soc. (12), 2719-22, 1987.*
CAPLUS Abstract of Morales et al, “Oxidation of trans-resveratorl by a hypodermal peroxidase isoenzyme from Gamay rouge grape (Vitis vinifera) berries,” Am. J. Enol. Vitic. 48(1), 33-38, 1987.*
Derwent Publications Ltd., AN 89-088653 “Skin whitening cosmetic material—contains hydroxystilbene cpds” & JP 01 038009 A, Feb. 8, 1989.
Derwent Publications Ltd., AN 96-368079, “Cosmetic contg. Stilbene deriv.—used for preventing wrinkles formation on skin due to UV light exposure” and JP 08 175960, Jul. 9, 1996.
Chemical Abstracts, vol. 114, No. 18, May 6, 1991, Huang et al, Hair growth stimulating preparations containing medicinal plant extracts, p. 430.
Bernard Bruno
Pruche Francis
Saint Leger Didier
Hardee John
L'Oreal
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