Process for working up aqueous dispersions of fluoropolymers

US6512089B1 · kind B1 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Klaus Hintzer · Woodbury, US
• Albert Killich · Altötting, DE
• Bernhard Hirsch · Altötting, DE
• Rudolf Erber · Garching bei München, DE

Key dates

• Filing date: Sep 12, 2001
• Grant date: Jan 28, 2003
• Expiry date: Sep 12, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F6/22
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Process for working up aqueous dispersions of fluoropolymers. Fluoropolymer dispersions, in particular of fluoroelasomers, can be coagulated without adding chemicals, by compression with the aid of a gas and release through one or more small apertures.