C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
167/302, 260/557
C07D 295/135 (2006.01) C07C 215/80 (2006.01) C07C 233/43 (2006.01) A61K 7/13 (1990.01)
Patent
CA 2016834
ABSTRACT OF THE DISCLOSURE The present invention concerns the aminophenols (I) as novel couplers Image (I) wherein R1 and R2 may be the same or different and are hydrogen, alkyl and hydroxyalkyl of from 1 to about 6 carbons in the alkyl moiety, or R1 and R2 can also form, together with the nitrogen atom to which they are attached, a morpholine, piperidine or pyrrolidine ring, and R3 and R4 are hydrogen, alkyl, acyl and hydroxyalkyl having from 1 to about 6 carbons, and oxidative hair dye compositions containing same along with at least one primary dye intermediate in aqueous or hydroalcoholic media. CP-1045
Chan Alexander
Hochman Lana
Pan Yuh-Guo
Bristol-Myers Squibb Company
Gowling Lafleur Henderson Llp
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