Doubly gas-phase passivated metallic pigments

US5474605A · kind A · utility

Assignee

• BASF SE

Inventors

• Raimund Schmid · Neustadt, DE
• Norbert Mronga · Dossenheim, DE
• Harald Keller · Ludwigshafen, DE
• Juan Antonio Gonzalez Gomez · Ludwigshafen, DE

Key dates

• Filing date: Apr 20, 1995
• Grant date: Dec 12, 1995
• Expiry date: Apr 20, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2995
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Passivated metallic pigments obtainable by gas-phase decomposition of volatile phosphorus compounds and of volatile nitrogenous silicon compounds with steam and/or oxygen in the presence of the agitated pigment particles, and the production of these pigments and their use for coloring water-based printing inks, other inks and paints.