Method of making fluoropolymer dispersion

US8222322B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Klaus Hintzer · Woodbury, US
• Michael Jürgens · Rheydt, DE
• Harald Kaspar · Altötting, DE
• Herbert Koenigsmann · Altötting, DE
• Kai H. Lochhaas · Neuötting, DE
• Andreas Maurer · Zürich, CH
• Werner Schwertfeger · Altötting, DE
• Tilman C. Zipplies · Burghausen, DE
• Ludwig Mayer · San Jose, US
• Michael C. Dadalas · Eggenfelden, DE
• George G. I. Moore · Afton, US
• Jay F. Schulz · Eagan, US
• Richard M. Flynn · Mahtomedi, US

Key dates

• Filing date: Jan 8, 2010
• Grant date: Jul 17, 2012
• Expiry date: Jul 21, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02C20/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method of making a fluoropolymer dispersion by first providing a fluoropolymer dispersion comprising fluoropolymer particles and one or more fluorinated surfactants selected from fluorinated carboxylic acids or salts thereof having the general formula:[Rf—O-L-COO−]iXi+  (I)