Goniochromatic gloss pigments based on coated silicon dioxide platelets

US6063179A · kind A · utility

Assignee

• BASF SE

Inventors

• Raimund Schmid · Neustadt, DE
• Norbert Mronga · Dossenheim, DE

Key dates

• Filing date: Oct 13, 1998
• Grant date: May 16, 2000
• Expiry date: Oct 13, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09C2200/401
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Goniochromatic luster pigments based on silicon dioxide platlets, CVD coated with A) a nonselectively absorbing filmlike layer at least partially transparent to visible light, and B) if desired an outer layer which consists essentially of colorless or selectively absorbing metal oxide and/or comprises phosphate, chromate and/or vanadate, are prepared and used for coloring paints, inks, including printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.