Silanized silicic acids

US5711797A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Manfred Ettlinger · Karlstein, DE
• Dieter Kerner · Midland Park, US
• Jurgen Meyer · Aschaffenburg, DE

Key dates

• Filing date: Apr 2, 1997
• Grant date: Jan 27, 1998
• Expiry date: Apr 2, 2017

Classification

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

Abstract

The silanized, pyrogenically prepared silicic acids are prepared by treating pyrogenically prepared silicic acids with an organosilane selected from the group (RO).sub.3 SiC.sub.n H.sub.2n+1, in which n--from 10 to 18 and R stands for an alkyl.