Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2005-07-12
2005-07-12
Hardee, John R. (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S408000, C548S559000, C549S021000, C564S336000
Reexamination Certificate
active
06916346
ABSTRACT:
Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1):wherein R is selected from C1to C5alkyl or hydroxyalkyl, a C3to C6cyclic ring containing hetero atoms selected from O, S and N atoms, and —CH2—Ar where Ar is an aromatic ring wherein the aromatic ring may be substituted with one or two hydroxy C1to C3alkoxy, or amino groups.
REFERENCES:
patent: 6774244 (2004-08-01), Lim et al.
patent: 1095993 (1960-12-01), None
patent: 19604178 (1987-08-01), None
Lim Mu'Ill
Pan Yuh-Guo
Bolam Brian M.
Dressman Marianne
Hardee John R.
Rosnell Tara M.
The Procter & Gamble & Company
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