Silver pigments
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United States of America Patent
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Mar 18, 2008
Grant Date -
Nov 11, 2004
app pub date -
Mar 29, 2004
filing date -
Mar 27, 2003
priority date (Note) -
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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 TiO.sub.2 having 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.
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