Metal oxide coated platelet-like organic pigments

US5026429A · kind A · utility

Assignee

• BASF SE

Inventors

• Norbert Mronga · Dossenheim, DE
• Werner Ostertag · Havelsee, DE
• Gustav Bock

Key dates

• Filing date: Jan 25, 1990
• Grant date: Jun 25, 1991
• Expiry date: Jan 25, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2991
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A luster pigment is described which is made up of a metal oxide film on a colored platelet-like support. The support is a pigment having a length of 3-150 .mu.m, a width of 3-150 .mu.m, and a thickness of 0.1-2 .mu.m. A process is described for the preparation of the pigment in which an organic platelet-like pigment is coated with a metal-oxide film by chemical vapor deposition. The preferred platelet-like organic pigment is .beta.-copper phthalocyanine.