Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Patent
1987-12-08
1989-05-09
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
8407, 8424, 8429, 564274, A61K 713, C07C11910
Patent
active
048285684
ABSTRACT:
Oxidation hair-dyeing preparations which contain as couplers N-(2-4dihydroxbenzylidene)-amino compounds corresponding to the following formula ##STR1## in which A is a group corresponding to one of the following formulae ##STR2## or salts thereof and the developers normally present in oxidation hair dyes. p-Phenylenediamine and derivatives thereof are particularly suitable as developers. Yellow to olive-brown colors of high fastness are obtained.
REFERENCES:
patent: 4575377 (1986-03-01), Rose et al.
Konrad Guenther
Lieske Edgar
Moeller Hinrich
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Lieberman Paul
Skane Christine A.
Szoke Ernest G.
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