Primary intermediates for oxidative coloration of hair

Details Primary intermediates for oxidative coloration of hair Primary intermediates for oxidative coloration of hair

2005-10-04

2005-10-04

Hardee, John R. (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C008S410000, C568S346000

Reexamination Certificate

active

06951574

ABSTRACT:
Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1):where R1and R2are each individually selected from a hydrogen atom, a C1to C3alkyl group, a C1to C5mono or dihydroxyalkyl group; phenyl or benzyl optionally substituted with an alkoxy group, or R1and R2together with the nitrogen atom to which they are attached form a piperazine, piperidine, imidazole, or morpholine ring.

REFERENCES:
patent: 6436152 (2002-08-01), Chassot
patent: 1116711 (2001-09-01), None

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