Fluoropolymer dispersion and method for making the same

US7728087B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Klaus Hintzer · Woodbury, US
• Harald Kaspar · Altötting, DE
• Helmut Traunspurger · Julbach, DE
• Tilman C. Zipplies · Burghausen, DE

Key dates

• Filing date: Dec 23, 2005
• Grant date: Jun 1, 2010
• Expiry date: Apr 28, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F14/18
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method for polymerizing, in an aqueous medium, at least one fluorinated monomer in the presence of a non-copolymerizable, non-fluorinated surfactant. The surfactant is generally selected from a non-ionic surfactant, a primary anionic surfactant, or a combination thereof. Fluorinated surfactants are not utilized. The resulting partially fluorinated polymer in the aqueous medium is either a semi-crystalline polymer or a crystalline polymer.