Surface-modified titanium dioxide

US6663851B1 · kind B1 · utility

Assignee

• Degussa AG · DE

Inventors

• Klaus Deller · Großkrotzenburg, DE
• Dieter Kerner · Midland Park, US
• Juergen Meyer · Taunusstein, DE

Key dates

• Filing date: Jun 29, 2000
• Grant date: Dec 16, 2003
• Expiry date: Aug 16, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K2003/2237
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A product obtained by treating surface-modified, pyrogenically produced titanium dioxide with at least one ammonium-functional silane, such as by spraying the pyrogenically produced titanium dioxide with the at least one silane, alone or in ethanol solution, and tempering, and useful in the field of cosmetics in sunblocks, in toner powders, in paints and varnishes, in silicone rubber, as abrasives and polishes, for example, in the field of CMP.