Method of producing hydrophobic pyrogenically produced oxides

US6316050A · kind A · utility

Inventors

• Harald Troll · Alzenau, DE
• Thomas Hennig · Richelbach, DE
• Jurgen Meyer · Aschaffenburg, DE
• Uwe Schachtely · New York, US
• Henning Karbe · Gelnhausen, DE

Key dates

• Filing date: Dec 22, 1998
• Grant date: Nov 13, 2001
• Expiry date: Dec 22, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/90
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Hydrophobic, pyrogenically produced oxides having a ratio of dimethylsilyl groups to monomethylsilyl groups of 100:0 to 50:50 are prepared by using siloxanes or methylsiloxane mixtures D3 to D9 as hydrophobing agent.