Titanium dioxide coated with silicon dioxide

US7244302B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Kai Schumacher · Hofheim, DE
• Christoph Batz-Sohn · Hanau, DE
• Steffen Hasenzahl · Hanau, DE

Key dates

• Filing date: Dec 2, 2003
• Grant date: Jul 17, 2007
• Expiry date: Dec 2, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2993
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A powder containing particles with a core of titanium dioxide and a coating of silicon dioxide in an amount of between 0.5 and 40 wt. %, the particles have a BET surface of between 5 and 300 m2/g, and the particles are primary particles that have a coating of silicon dioxide and a core of titanium dioxide.