Organic compounds -- part of the class 532-570 series – Organic compounds – Nitriles
Patent
1996-12-02
1997-12-30
Lieberman, Paul
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitriles
564443, C07C21574
Patent
active
057032661
ABSTRACT:
The invention concerns the use of a 3-substituted para-aminophenol as an oxidation dye precursor for dyeing keratinous fibres, in particular human hair. The 3-substituted para-aminophenol has formula: ##STR1## where R.sub.1 represents alkyl, alkenyl, mono- or polyhydroxyalkyl, nitrile, cyanoalkyl, halogenoalkyl, aminoalkyl or alkoxyalkyl and R.sub.2 represents hydrogen, alkyl or mono- or polyhydroxyalkyl, provided that when R.sub.2 is hydrogen R.sub.1 is not methyl or trifluoromethyl, and to addition salts thereof with an acid. The invention also concerns dye compositions containing compound (I). The invention further concerns novel 3-substituted para-aminophenols.
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Audousset Marie Pascale
Cotteret Jean
Lagrange Alain
Vandenbosche Jean Jacques
"L'Oreal"
Dusheck Caroline L.
Lieberman Paul
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