Oxidative hair dye compositions and methods containing 1--(4-ami

Details Oxidative hair dye compositions and methods containing 1--(4-ami Oxidative hair dye compositions and methods containing 1--(4-ami

1997-07-14

1998-12-22

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8408, 8410, 8411, 8412, 8423, 8574, A61K 713

Patent

active

058512373

ABSTRACT:
The invention provides compositions and methods for the oxidative coloring of human hair. The compositions of the invention contain as a primary dye intermediate a 1-(4-aminophenyl) pyrrolidine, or a cosmetically acceptable salt thereof. The compositions may also contain at least one other primary intermediate and conventional coupling compounds, in addition to an oxidizing agent and other components typically used in oxidative hair dye preparations. Preferred dye intermediates in the compositions of the invention include 1-(4-aminophenyl) pyrrolidine and 1-(4-amino-3-methylphenyl) pyrrolidine, or cosmetically acceptable salts thereof, which produce intense neutral colors when used in admixture with a suitable coupling agents, such as 3-aminophenol, in conventional hair dye base formulations.

REFERENCES:
patent: 4131468 (1978-12-01), Rennison et al.
patent: 5278034 (1994-01-01), Ohki et al.

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