Fumed silanized and ground silica

US8152916B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Juergen Meyer · Taunusstein, DE
• Andreas Garbatscheck · Großkrotzenburg, DE
• Guenther Michael · Karlstein, DE
• Vlasta Valter · Großkrotzenburg, DE

Key dates

• Filing date: May 6, 2008
• Grant date: Apr 10, 2012
• Expiry date: Jan 13, 2029

Classification

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

Abstract

The invention relates to a hydrophobic fumed silica which is obtained by grinding a fumed silica which, as a result of silanization, has octylsilyl groups fixed on the surface, to a process for preparing it, and to coating formulations comprising this silica.