Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Reexamination Certificate
2007-03-13
2007-03-13
Elhilo, Eisa (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
C008S406000, C008S431000, C008S657000, C008S658000, C008S662000, C008S673000, C008S676000
Reexamination Certificate
active
10472305
ABSTRACT:
A composition of certain dyes with a category-2 hair bleach can simultaneously lighten hair up to seven levels and deposit various shades of color in a single step. The dyes are bleach-stable derivatives of azo, triarylmethane, thiazine, or nitro dyes. When linked at the ortho- and/or para-positions relative to the chromophoric centers and auxochrome groups located on or attached to the aromatic rings of these dyes, deactivating or weakly activating chemical groups enhance the dye stability in the alkaline bleach. The absence of ortho and/or para positioned deactivating or weakly-activating substituents, or the presence of strongly activating groups in these positions render the dye molecule susceptible to attack by the bleach and the eventual destruction of these dyes. These deactivating and protective chemical groups may be nitro, halogen, cyano, carboxyl, sulfonic, alkyl or aromatic groups, but not amino, hydroxy, alkoxy or alkylamide groups.
REFERENCES:
patent: 5474578 (1995-12-01), Chan et al.
patent: 5688291 (1997-11-01), Said et al.
patent: 6440177 (2002-08-01), Orr
patent: 2002/0004957 (2002-01-01), Imperial
patent: 2624690 (1977-12-01), None
patent: 19721785 (1998-09-01), None
patent: 19721785 (1998-09-01), None
patent: 1535799 (1968-08-01), None
patent: 1059986 (1967-02-01), None
patent: 1554331 (1979-10-01), None
patent: 2217735 (1989-11-01), None
patent: 175940/1996 (1996-07-01), None
patent: 09-278634 (1997-10-01), None
patent: WO 0076469 (2000-12-01), None
patent: WO 0152802 (2001-07-01), None
Dr. G. Schroder BASF Corporation, “Haar und-Pelzfrbung mit oligomeren tiarylmethanfarbstoffen,” Research Disclosure, Kenneth Mason Publications (Great Britain), vol. 432 (No. 37), (Apr. 21, 2000).
Said Hayel M.
Said Hian
Cunniff John J.
Elhilo Eisa
Hahn Loeser & Parks LLP
L'Avant Garde, Inc.
LandOfFree
Composition for simultaneously lightening and coloring hair... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composition for simultaneously lightening and coloring hair..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition for simultaneously lightening and coloring hair... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3721579