Particles comprising zwitterionic structural elements

US8137590B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Christoph Briehn · Munich, DE
• Peter Ball · Emmerting, DE
• Martina Baumann · Sauerlach, DE
• Torsten Gottschalk-Gaudig · Burghausen, DE
• Manfred Hoelzl · Burghausen, DE

Key dates

• Filing date: Oct 5, 2006
• Grant date: Mar 20, 2012
• Expiry date: Apr 25, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/5415
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Solid particles bearing zwitterionic functional groups exhibit properties unlike other functionalized particles, and are particularly useful as proton-conductive fillers in membranes for fuel cells, where they increase physical properties as well as charge conducting properties. The particles are prepared by reacting functionalized particles with zwitterionic group-containing silanes or siloxanes.