Coupler components for the oxidation of hair dyes and their use,

Details Coupler components for the oxidation of hair dyes and their use, Coupler components for the oxidation of hair dyes and their use,

1981-04-28

1983-09-06

Trousof, Natalie

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

564276, 564275, A61K 713, C07C11906

Patent

active

044026994

ABSTRACT:
2,4-Dichloro-3-alkylidene-aminophenols having the formula: ##STR1## wherein R.sub.1 represents hydrogen or an alkyl radical having 1 to 6 carbon atoms and R.sub.2 represents an alkyl radical having 1 to 6 carbon atoms or an aryl radical, with the proviso that R.sub.2 can only be an aryl radical when R.sub.1 is hydrogen.
The 2,4-dichloro-alkylidene-aminophenols can be produced by reaction of 2,4-dichloro-3-aminophenol with the corresponding aldehydes or ketones. They are suitable as such, or in the form of their salts with inorganic or organic acids, as coupler components in oxidation hair dyes.

REFERENCES:
patent: 4126461 (1978-11-01), Pupo et al.
patent: 4198349 (1980-04-01), Nuss et al.

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