Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2008-07-08
2008-07-08
Elhilo, Eisa B (Department: 1796)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S406000, C008S408000, C008S410000, C008S411000, C008S412000, C008S435000
Reexamination Certificate
active
11475984
ABSTRACT:
Disclosed herein are para-phenylenediamine compounds of formula (I), and their salts and solvates:wherein R1and R2form, together with the carbon atoms to which they are attached, a 4-, 5-, 6- or 7-membered ring, wherein the ring comprises carbon atoms and, optionally, one or two atoms chosen from oxygen and nitrogen, the ring being optionally substituted, with the proviso that when the ring comprises two atoms chosen from oxygen and nitrogen, these two atoms are non-adjacent. Compositions comprising these compounds and processes of making them, as well as processes and kits for dyeing keratin fibers are also disclosed.
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Elhilo Eisa B
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
L'Oreal S.A.
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