Patent ID: 7989512
Filing Date: 2011-08-02
Classification: C08F,C08J,H01M,Y02E

Abstract:
1. A method of forming an ionomeric membrane comprising a polymer unit having formula 1: wherein: P R R R R R E Z X is an —OH, a halogen, an ester, or i is an integer from 1 to 10,000; and Q a) reacting a polymer comprising a polymer unit having formula 3 in chlorosulfonic acid to form a first precipitate, the first precipitate comprising a polymer comprising a polymer unit having formula 4 and dissolves in a polar aprotic solvent to form a first solution: b) forming a polymeric membrane from the first solution, the polymeric membrane including the polymer comprising a polymer unit having formula 4; and c) reacting the polymer comprising a polymer unit having formula 4 with a nucleophilic compound to form a base polymer having polymer unit 1.