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

1990-12-28

1991-10-01

Robinson, Allen J.

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

8408, 8421, 8469, 544166, 548363, 549437, 549439, 564163, 564440, 564442, 564443, A61K 713

Patent

active

050530526

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 dye composition containing one or more compounds of formula (I) where Y denotes an oxygen or sulphur atom and R is C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl, C.sub.1 -C.sub.6 haloalkyl or C.sub.2 -C.sub.6 polyhydroxyalkyl.

REFERENCES:
patent: 3666812 (1972-05-01), Kalopissis et al.
Chemical Abstracts, vol. 109, No. 15, Oct. 10, 1988, p. 649, No. 128609s.
Chemical Substance Index, vol. 109, Jul.-Dec., 1988, p. 872CS.
Chemical Abstracts, vol. 98 (14): 110060a, 1983.

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