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US 12,489,130 B2Granted
Fluoropolymer comprising pendent groups with ionic bis(sulfonyl)imide moiety and perfluoroether terminal group
Assignee3M Innovative Properties Company
InventorsMatthew J. Lindell, Michael A. Yandrasits, Andrew T. Haug
Life of this patent
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Abstract
A fluoropolymer is described comprising pendent groups having the formula: —(CF2)a—(OCbF2b)c—(OCeF2e)—SO2—[NX2—SO2(CF2)f—SO2]d—NX1—SO2—Rf wherein Rf is a perfluoroether and X1 and X2 are independently cationic counterions. Also described are various articles including catalyst ink, polymer electrolyte membranes, and membrane electrode assemblies comprising the fluoropolymer described herein; as well as a method of making a fluoropolymer.
Claims14
A fluoropolymer comprising pendent groups according to the formula:
- (OCFeF2e)—SO2—[NX2—SO2(CF2)f—SO2]d—NX1—SO2—Rf
- wherein
- Rf is a perfluoroether;
- e and f independently range from 2 to 6;
- d 1, or greater than 1;
- and
- X1 and X2 are independently cationic counterions.
4 more elements
Dependencies are inferred from the claim text.