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US 7,396,401 B2Granted
Effect pigments of uniform shape and size
AssigneeMerck Patent GmbH
InventorsMichael Jungnitz, Gerald Fuchs-Pohl, Reinhold Rueger
Life of this patent
Estimating the term…
Abstract
Effect pigments based on a flake-form substrate that have a circular or elliptical shape or have the shape of a polygon, the preparation thereof, and the use thereof, for example, in paints or coatings, or as tracers.
Claims22
An effect pigment of uniform shape and size based on a flake-form, inorganic substrate, comprising inorganic flake-form substrates which are uniform in shape and size and have a circular or elliptical shape or a polygon Vn shape, where
- n=the number of corners and
- n>3, wherein the flake-form inorganic substrate comprises one or more metal oxides, and on the substrate one or more layers comprising a metal oxide, metal oxide hydrates, metal suboxides, metal, metal fluorides, metal nitrides, metal oxynitrides or mixtures thereof.
Dependencies are inferred from the claim text.