Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Patent
1996-07-12
1998-05-05
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
8405, 8407, 8409, 8423, 8606, 8657, 8675, A61K 713
Patent
active
057467790
ABSTRACT:
Quaternized blue anthraquinone compounds of Formula I ##STR1## wherein R.sub.1 and R.sub.2 are methyl and R.sub.3 is propyl, or R.sub.1 and R.sub.2 are ethyl and R.sub.3 is methyl and A.sup.- is a cosmetically acceptable anion, when employed in an isatin/amine dye system for the dyeing of hair enable the hair colorist to develop a full range of shades for the isatin/amine dye system. The compound of Formula I wherein R1 and R2 are methyl and R3 is propyl is preferred. Compositions and a method of use employing same are disclosed.
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patent: 5261926 (1993-11-01), Lang et al.
patent: 5279616 (1994-01-01), Lang et al.
patent: 5340366 (1994-08-01), Lang et al.
patent: 5520707 (1996-05-01), Lim et al.
Bristol--Myers Squibb Company
Dusheck Caroline L.
Lieberman Paul
Simon Morton S.
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