Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
2008-05-20
2008-05-20
Lorengo, J. A. (Department: 1793)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C106S400000, C106S481000, C106S482000, C106S415000, C106S404000, C257S077000
Reexamination Certificate
active
07374609
ABSTRACT:
The present invention relates to pigments whose particles have a length of from 2 μm to 5 mm, a width of from 2 μm to 2 mm and a thickness of from 50 nm to 1.5 μm and a ratio of length to thickness of at least 2:1, the particles having a core of a metallically reflecting material having two substantially parallel faces, the distance between which is the shortest axis of the core, comprising (a), optionally, on one parallel face of the core, an SiOylayer wherein 0.95<y≦2.0, (b), on the SiOylayer, an SiOxlayer wherein 0.03<x≦0.95, and (c), on the SiOxlayer, an SiOzlayer wherein 0.95<z≦2.0, to a method for the production thereof, and to the use thereof in paints, textiles, ink-jet printing, cosmetics, coating compositions, plastics, printing inks and in glazes for ceramics and glass. The pigments without an SiOylayer produce brilliant colours. The pigments with an SiOylayer are opaque and exhibit brilliant colours with a metallic appearance.
REFERENCES:
patent: 5766335 (1998-06-01), Bujard et al.
patent: 6572784 (2003-06-01), Coombs et al.
patent: 2003/0075079 (2003-04-01), Sommer
patent: 2003/0209169 (2003-11-01), Andes et al.
patent: 2004/0131776 (2004-07-01), Weinert
patent: 2005/0013934 (2005-01-01), Xiong et al.
patent: 2005/0252410 (2005-11-01), Bujard et al.
patent: 2005/0287090 (2005-12-01), Bujard
patent: 0803549 (1997-10-01), None
patent: 01/57287 (2001-08-01), None
patent: 02/40599 (2002-05-01), None
Bugnon Philippe
Bujard Patrice
Ciba Specialty Chemicals Corporation
Lorengo J. A.
Parvini Pegah
Suhadolnik Joseph C.
LandOfFree
Optically variable pigments having an asymmetrical layer... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optically variable pigments having an asymmetrical layer..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optically variable pigments having an asymmetrical layer... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2749790