Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2006-08-11
2009-02-17
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, C008S421000, C008S435000
Reexamination Certificate
active
07491244
ABSTRACT:
The object of the present patent application are agents for the oxidative coloring of keratin fibers, particularly hair, based on a developer substance-coupler substance combination, characterized in that they contain at least one meta-aminophenol derivative of general formula (I)whereinR1 denotes hydrogen, a C1-C6 alkyl group, a C2-C4 hydroxyalkyl group, a C2-C4 dihydroxyalkyl group, a C1-C4 alkoxy group or a halogen atom; and R2 denotes hydrogen, a hydroxy group, a carboxylic group, an aminocarbonyl group or a hydroxymethyl group.
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Advanced Organic Chemistry—Reactions, Mechanisms and Structure (Jerry March, 5thEdition (2001), pp. 368-375.
Braun Hans-Jürgen
Chassot Laurent
Dressman Marianne
Elhilo Eisa B
Krasovec Melissa
Rosnell Tara M.
The Procter & Gamble & Company
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