Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2005-06-21
2005-06-21
Einsmann, Margaret (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S406000, C008S409000, C008S410000, C008S411000, C008S412000, C008S421000, C008S424000, C544S162000, C544S171000, C546S232000, C564S350000
Reexamination Certificate
active
06908493
ABSTRACT:
Couplers 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: 4888025 (1989-12-01), Bugaut et al.
patent: 2948093 (1981-08-01), None
patent: 3302534 (1983-08-01), None
patent: 0 029 964 (1981-06-01), None
Anderson James S.
Lim Mu'Ill
Pan Yuh-Guo
Bolam Brian M.
Einsmann Margaret
Elhilo Eisa
Rosnell Tara M.
Sambrook Michael J.
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