3-substituted para-aminophenols, process for preparing them, the

Details 3-substituted para-aminophenols, process for preparing them, the 3-substituted para-aminophenols, process for preparing them, the

1994-05-26

1996-04-02

Willis, Jr., Prince

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8405, 8406, 8408, 564356, 564442, A61K 713, C07C21100

Patent

active

055036406

ABSTRACT:
3-Substituted para-aminophenols of general formula: ##STR1## where X=H, halogen; Y=O--, --S--; R=alkyl, hydroxyalkyl, C.sub.1-4 aminoalkyl or C.sub.3 -C.sub.6 polyhydroxyalkyl;

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patent: 3893803 (1975-07-01), Kaiser
patent: 3957424 (1976-05-01), Zefren et al.
patent: 4164704 (1979-10-01), Fakhouri
patent: 4473374 (1984-09-01), Bugaut et al.
patent: 4662892 (1987-05-01), Pike
patent: 4865618 (1989-09-01), Junino et al.
patent: 5002585 (1991-03-01), Junino et al.

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