2-substituted para-aminophenols and their use for dyeing keratin

Details 2-substituted para-aminophenols and their use for dyeing keratin 2-substituted para-aminophenols and their use for dyeing keratin

1992-08-24

1993-04-13

Robinson, Allen J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

8411, 8412, 8421, 564440, C07C32329

Patent

active

052024873

ABSTRACT:
2-Substituted para-aminophenols of general formula: ##STR1## where Y denotes oxygen or sulphur and R denotes a C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl or C.sub.1 -C.sub.6 haloalkyl or a C.sub.2 -C.sub.6 polyhydroxyalkyl, provided that when Y=O, R is not methyl or ethyl and when Y=S, R is not ethyl; and

REFERENCES:
patent: 1940757 (1933-12-01), Lehmann et al.
patent: 3666812 (1972-05-01), Kalopissis et al.
patent: 3712927 (1973-01-01), Howe et al.
patent: 4588410 (1986-05-01), Konrad et al.
patent: 4863924 (1989-09-01), Hage et al.
patent: 4997451 (1991-03-01), Clausen et al.
Chemical Abstracts, vol. 109, No. 15, Oct. 10, 1988, p. 649, No. 128609s.
Chemical Abstracts, vol. 98, No. 14, 1983, No. 110060a.

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