Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2002-06-11
2008-08-05
Elhilo, Eisa B (Department: 1796)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S406000, C008S410000, C008S412000, C008S437000, C008S451000, C008S463000, C008S570000, C008S571000, C008S574000, C546S184000, C546S249000, C546S290000, C548S318100
Reexamination Certificate
active
07407516
ABSTRACT:
The present disclosure relates to a novel dyeing composition for dyeing human keratinous fibers, such as hair, comprising at least one dicationic diazo dye of formula (I):in-line-formulae description="In-line Formulae" end="lead"?[W1—N═N—W2—W3—(W4—W5)p-]2-L Formula (I)in-line-formulae description="In-line Formulae" end="tail"?as well as the process for dyeing hair using same. Certain compounds of formula (I) are also disclosed herein.
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Elhilo Eisa B
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
L'Oreal S.A.
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