| abstract |
The present invention relates to effect pigments with improved optical properties based on SiO 2 platelets coated with one or more layers, wherein the SiO 2 platelets have a thickness of 50 nm to 150 nm, processes for their preparation and the use of these pigments in Cosmetics, lacquers, paints, plastics, foils, in security printing, in security features in documents and ID cards, for seed coloring, for food coloring or in pharmaceutical coatings and for the production of pigment preparations and dry preparations. |