Surface-modified silicon dioxide-titanium dioxide mixed oxides

US7255735B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Jurgen Meyer · Aschaffenburg, DE
• Kai Schumacher · Hofheim, DE
• Steffen Hasenzahl · Hanau, DE
• Heike Riedemann · Mömbris, DE
• Ann Gray · Hanau, DE

Key dates

• Filing date: Dec 21, 2005
• Grant date: Aug 14, 2007
• Expiry date: Dec 21, 2025

Classification

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

Abstract

Pyrogenically prepared surface-modified silicon dioxide-titanium dioxide mixed oxides are prepared by spraying pyrogenically prepared silicon dioxide-titanium dioxide mixed oxides with a surface-modifying agent. The surface-modified pyrogenically prepared silicon dioxide-titanium dioxide mixed oxides can be used in sun protection formulation.