Fluoropolymers with improved characteristics

US6610807B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Denis Duchesne · Woodbury, US
• Harald Kaspar · Altötting, DE
• Lisa P. Chen · Okabena, US
• Klaus Hintzer · Woodbury, US
• Attila Molnar · Vadnais Heights, US
• Ludwig Mayer · San Jose, US
• Gernot Lohr · Altötting, DE

Key dates

• Filing date: Jul 3, 2002
• Grant date: Aug 26, 2003
• Expiry date: Jul 3, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31544
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A fluoropolymer composition is provided. The polymer comprises interpolymerized units derived from (i) tetrafluoroethylene, (ii) vinylidene fluoride, (iii) at least one ethylenically unsaturated monomer of the formula CF2═CFRf where Rf is a perfluoroalkyl or a perfluoroalkoxy of 1 to 8 carbon atoms, and (iv) a perfluorovinyl ether of the formula CF2═CF—(OCF2CF(Rf))aORf where Rf is as described in (iii), Rf is a perfluoroaliphatic, preferably a perfluoroalkyl or a perfluoroalkoxy, of 1 to 8, preferably 1 to 3, carbon atoms, and a has a value of 0 to 3.