Soft iron pigments

US6589331B2 · kind B2 · utility

Assignee

• Eckart GmbH & Co. KG · DE

Inventors

• Werner Ostertag · Havelsee, DE
• Stefan Trummer · Koblenzer Straße, DE
• Frank Henglein · Nuremberg, DE
• Klaus Greiwe · Lautenbächle, DE

Key dates

• Filing date: Mar 25, 2002
• Grant date: Jul 8, 2003
• Expiry date: Mar 25, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09C2220/20
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present invention deals with metal oxide coated, flake shaped soft iron pigments. The characteristic feature is a reflector substrate, which is produced by deformation of reduced carbonyl iron powder. The pigments are colorful, display metallic luster and a high magnetic permeability. They can be oriented in the medium by means of an external magnetic field. The novel pigments find use in the decorative and/or functional field, particularly in lacquers, paints, plastics, in printing, in glass, ceramics and in cosmetics.