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

1992-11-12

1994-11-15

Willis, Jr., Prince

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8405, 8406, 8408, 8424, 564356, 564442, 564443, A61K 713, C07C21100, C07C21500

Patent

active

053644131

ABSTRACT:
3-Substituted para-aminophenols, process for preparing them, their use for dyeing keratinous fibres and the intermediate compounds used in the process of preparation.
3-Substituted para-aminophenols, of general formula: ##STR1## where X.dbd.H, halogen; Y.dbd.O--, --S--; R.dbd.alkyl, hydroxyalkyl, C.sub.1-4 aminoalkyl or C.sub.3 -C.sub.6 polyhydroxyalkyl;

REFERENCES:
patent: 3893803 (1975-07-01), Kaiser
patent: 3957424 (1976-05-01), Zeffren et al.
patent: 4169704 (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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