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US 12,341,227 B2Granted
Perfluorosulfonyl monomers suitable for fluoropolymers and fuel cell membrane articles
Assignee3M Innovative Properties Company
InventorsMichael A. Yandrasits, Miguel A. Guerra, Carl A. Laskowski, Matthew J. Lindell
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Abstract
Presently described is a monomer having the formula: wherein n ranges from 2 to 8; Y is F or CmF2m+1; a is 0, or averages 1 to 2; m is independently 1, 2, 3, or 4; and X is F or OH. Also described is a method of making such monomer, various compounds prepared during while making the monomer, fluoropolymers comprising polymerized units of such monomer, fuel cell membranes, membrane electrode assemblies, and methods of making fluoropolymers.
Claims14
A monomer of the formula:
- wherein
- n ranges from 2 to 8;
- Y is F or CmF2m+1;
- a is 0, or averages 1 to 2;
- m is independently 1, 2, 3, or 4;
- and
- X is F or OH.
4 more elements
Dependencies are inferred from the claim text.