Precipitated silicas as a reinforcing filler for elastomer mixtures

US8658816B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Andre Wehmeier · Rheine, DE
• Oleg Stenzel
• Weicheng Wu · Recklinghausen, DE
• Christian Goetz · Seligenstadt, DE
• Werner Niedermeier · Brauel, DE
• Marinus Haddeman · Bensberg, DE
• Anke Blume · Lechenich, DE

Key dates

• Filing date: Mar 19, 2009
• Grant date: Feb 25, 2014
• Expiry date: Feb 20, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to precipitated silicic acids, which have a particularly narrow particle size distribution in combination with a special pore size distribution, to a method for the production thereof, and to the use thereof as a filler for rubber mixtures.