Iron effect pigments
AssigneeEckart GmbH
InventorsWerner Ostertag, Stefan Trummer, Frank Henglein, Klaus Greiwe
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Abstract
The present invention is concerned with soft-magnetic iron effect pigments with metallic luster, which are produced by grinding reductively treated carbonyl iron powder, and which are passivated either during grinding or subsequent to the grinding. The products find application in the decorative and functional fields in paint and lacquer coatings, coloring of plastics, in printing, cosmetics, and glass and ceramics.
Claims19
A flake shaped iron pigment, wherein the pigment is produced from reductively treated carbonyl iron powder.
A method for the production of a flake shaped iron pigment, wherein dry or wet grinding of reductively treated carbonyl iron powders is carried out in the presence of auxiliary grinding agents and/or inhibitors and/or anticorrosive compounds.
A method for the production of a flake shaped iron pigment, wherein wet or dry grinding of reductively treated carbonyl iron powder is carried out with subsequent application of an anticorrosive barrier.
Dependencies are inferred from the claim text.