Highly disperse metal oxides having a high positive surface charge

US8361622B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Torsten Gottschalk-Gaudig · Burghausen, DE
• Ute Volkel · Burghausen, DE

Key dates

• Filing date: Jul 10, 2008
• Grant date: Jan 29, 2013
• Expiry date: Jun 25, 2029

Classification

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

Abstract

Metal oxides are modified by aminohydrocarbyl-substituted monoalkyltrisiloxy groups in a defined percentage of T1 and T2 groups relative to total T groups wherein the T groups denote connectivity of siloxy bonds to the metal oxide have a high positive triboelectric chargeability, the triboelectric charge being stable even in conditions of high humidity.