Quaternized blue anthraquinone hair dyes in an isatin/amine...

Details Quaternized blue anthraquinone hair dyes in an isatin/amine... Quaternized blue anthraquinone hair dyes in an isatin/amine...

A - Human Necessities

61

K

A61K 8/49 (2006.01) A61K 8/41 (2006.01) A61Q 5/10 (2006.01)

Patent

CA 2204707

Quaternized blue anthraquinone compounds of Formula I Image wherein R1 and R2 are methyl and R3 is propyl, or R1 and R2 are ethyl and R3 is methyl and A- 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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