Luster pigments based on multiply coated plateletlike metallic substrates

US5662738A · kind A · utility

Assignee

• BASF SE

Inventors

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

Key dates

• Filing date: Jul 22, 1994
• Grant date: Sep 2, 1997
• Expiry date: Jul 22, 2014

Classification

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

Abstract

Luster pigments useful for coloring paints, printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations are based on multiply coated plateletlike metallic substrates comprising PA1 A) a first, colorless or selectively absorbing layer of metal oxide, PA1 B) a second, nonselectively absorbing layer of carbon, metal and/or metal oxide, and PA1 C) if desired a third, colorless or selectively absorbing layer of metal oxide.