Precipitated silicas having special surface properties

US7767180B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Christian Panz · Wesseling, DE
• Helga Obladen · Zeven, DE
• Rene Allerdisse · Bornheim, DE
• Karl Meier · Bornheim, DE
• Markus Ruf · Meckenheim, DE
• Michael Kempf · Rodenbach, DE
• Mario Scholz · Zöblitz, DE
• Dieter Kuhn · Marburg, DE

Key dates

• Filing date: May 29, 2007
• Grant date: Aug 3, 2010
• Expiry date: Oct 30, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/57
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Precipitated silicas having an SiOHisolated absorbance ratio of greater than or equal to 1, may be used as reinforcers and thickeners for sealants.