Patent · US Active

Fluorinated copolymer having sulfonyl pendant groups and compositions and articles including the same

US11492431B2 · kind B2 · utility

0Cited by

63References

11Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Lisa P. Chen · Okabena, US
Gregg D. Dahlke · Windom, US
Denis Duchesne · Woodbury, US
Steven J. Hamrock · Saint Paul, US
Klaus Hintzer · Woodbury, US
Markus E. Hirschberg · Mühldorf, DE
Arne Thaler · Emmerting, DE
Tilman C. Zipplies · Burghausen, DE

Key dates

Filing date	Sep 14, 2018
Grant date	Nov 8, 2022
Priority date	—
Expiry date	Apr 8, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH01M2300/0082
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The copolymer includes divalent units represented by formula —[CF2—CF2]—, divalent units represented by formula; and one or more divalent units independently represented by formula: The copolymer has an —SO2X equivalent weight in a range from 300 to 2000. A polymer electrolyte membrane that includes the copolymer and a membrane electrode assembly that includes such a polymer electrolyte membrane are also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.