Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2007-01-30
2007-01-30
Elhilo, Eisa (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S406000, C008S407000, C008S410000, C008S411000, C008S423000, C008S426000, C008S437000, C008S562000, C008S565000, C008S566000, C008S568000, C008S570000, C008S571000, C008S572000, C008S573000, C008S574000, C008S575000, C008S576000, C008S579000, C549S200000, C546S146000, C552S100000, C540S122000
Reexamination Certificate
active
10742801
ABSTRACT:
A dye composition for dyeing human keratin fibers, such as hair, comprising at least one direct tricationic dye of formula (I) below:in-line-formulae description="In-line Formulae" end="lead"?Col—Z—Col (I)in-line-formulae description="In-line Formulae" end="tail"?wherein:Col, which may be identical or different, is a monocationic dye chosen from azo dyes, cyanomethine dyes and phenothiazine dyes andZ is chosen from linear and branched, saturated and unsaturated C1–C20hydrocarbon-based groups comprising at least one nitrogen atom and bearing a cationic charge. Also processes for dyeing human keratin fibers using the dye composition, to the use of the at least one direct tricationic dye of formula (I) as direct dyes, and to multi-compartment devices.
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Elhilo Eisa
Finnegan Henderson Farabow Garrett & Dunner LLP
L'Oreal S.A.
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