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US 11,236,196 B2Granted
Polymers and methods for their manufacture
AssigneeRensselaer Polytechnic Institute
InventorsChulsung Bae, Woo-Hyung Lee
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Abstract
Embodiments of the invention relate to a novel class of polymers with superior mechanical properties and chemical stability, as compared to known polymers. These polymers are particularly well suited for use in anion exchange membranes (AEMs), including those employed in fuel cells. Novel methods for the manufacture of these polymers are also described.
Claims18
A method of forming a polyarylene, the method comprising:
- reacting an aromatic compound and a trifluoroalkyl ketone in the presence of a strong acid to form a haloalkylated precursor polymer;
- and reacting the haloalkylated precursor polymer with a quaternary ammonium group to form a polyarylene having a main chain free of ether linkages.
A polymer according to formula I
- wherein Ar is an aromatic compound, r is from 100 to 1,000,000, and R2 comprises a quaternary ammonium group.
Dependencies are inferred from the claim text.