Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Patent
1990-10-23
1991-12-17
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
8406, 8412, 8414, 8416, 8421, 8435, 564157, 564223, 564340, 564441, A61K 713, C07C21100, C07C37100
Patent
active
050731734
ABSTRACT:
The present invention concerns the aminophenols (I) as novel couplers ##STR1## wherein R.sub.1 and R.sub.2 may be the same or different and are hydrogen, alkyl and hydroxyalkyl of from 1 to about 6 carbons in the alkyl moiety, or R.sub.1 and R.sub.2 can also form, together with the nitrogen atom to which they are attached, a morpholine, piperidine or pyrrolidine ring, and R.sub.3 and R.sub.4 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.
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J. F. Corbett, The Role of Metal Difunctional Benzene Derivatives in Oxidative Hair Dyeing. I. Reaction with p-Diamines, J. Soc. Cosmet, Chem., 24:103-134 (1973).
Chemistry of Synthetic Dyes, vol. 5, Ch. VII: J. F. Corbett, Hair Dyes (Academic Press 1971).
Chan Alexander
Hochman Lana
Pan Yuh-Guo
Clairol Incorporated
Lieberman Paul
Parks William S.
Zeller Charles
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