Gloss pigments comprising an absorbent low-refractive coating

US6533857B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Raimund Schmid · Neustadt, DE
• Arno Bohm · Mannheim, DE
• Oliver Seeger · Mannheim, DE
• Norbert Mronga · Dossenheim, DE
• Thorsten Clemens · Hochdorf-Assenheim, DE

Key dates

• Filing date: Feb 28, 2002
• Grant date: Mar 18, 2003
• Expiry date: Feb 28, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09C2220/106
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Luster pigments based on multiply coated reflecting platelet-shaped substrates and comprising at least one layer packet comprisingA) a low refractive coating which selectively absorbs visible light andB) a reflective coating which is at least partially transparent to visible light and also, if desired,C) an outer protective layer.