Hair dye coupler compounds

Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing

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C07C21149

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active

051839415

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 Meta 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), pp. 475-534.

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