Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2008-09-23
2011-12-13
Elhilo, Eisa (Department: 1761)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S407000, C008S435000, C008S465000, C008S642000, C008S648000, C562S426000
Reexamination Certificate
active
08075638
ABSTRACT:
The invention relates to the dyeing of keratin materials using dichromophore dyes with a carbonyl or heterocyclic linker. The invention relates to a dye composition comprising a dye with a carbonyl or heterocyclic linker, and to a dyeing process with a lightening effect on keratin materials, in particular keratin fibers, especially human keratin fibers such as the hair, using said composition, optionally in the presence of a cosmetically acceptable acid or base. It similarly relates to novel dyes and to the uses thereof in lightening keratin materials. This composition makes it possible to obtain a coloring with a lightening effect which is particularly resistant and visible on dark keratin fibers.
REFERENCES:
patent: 0 742 210 (1996-11-01), None
patent: 0742 210 (1996-11-01), None
patent: WO 00/15723 (2000-03-01), None
patent: WO 2005/097051 (2005-10-01), None
STIC Search Report dated Feb. 25, 2011.
H. Narkhede et al., “Fly-Ash-Supported Synthesis of 2-Mercaptobenzothiazole Derivatives under Microwave Irradiation,” Synthetic Communications, vol. 37, pp. 573-577 (2007).
International Search Report for PCT/EP2008/062711, dated Dec. 21, 2009.
Elhilo Eisa
Finnegan Henderson Farabow Garrett & Dunner LLP
L'Oreal S.A.
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