Silver pigments

Details Silver pigments Silver pigments

2004-03-29

2008-03-18

Green, Anthony J. (Department: 1755)

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

C106S031640, C106S031650, C106S031900, C106S436000, C106S442000, C106S446000, C106S447000, C047S057600, C424S401000, C426S540000, C428S402000, C428S403000, C428S404000, C524S413000

Reexamination Certificate

active

07344590

ABSTRACT:
The present invention relates to silver pigments based on transparent, low-refractive-index, platelet-shaped substrates which have a high-refractive-index coating consisting of TiO2having a layer thickness of 5-300 nm and optionally an outer protective layer, and to the use thereof in paints, coatings, printing inks, security printing inks, plastics, button pastes, ceramic materials, glasses, for seed coloring, as dopants in the laser marking of plastics and papers, as additives for coloring in the foods and pharmaceuticals sectors, and in cosmetic formulations and for the preparation of pigment compositions and dry preparations.

REFERENCES:
patent: 6270563 (2001-08-01), Herget et al.
patent: 6630018 (2003-10-01), Bauer et al.
patent: 6840993 (2005-01-01), Schmidt et al.
patent: WO 93/08237 (1993-04-01), None

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