Patent ID: 8119833
Filing Date: 2012-02-21
Classification: C08J

Abstract:
1. A polymer electrolyte membrane comprising: a dendrimer solid acid of the following formula and where X is a core represented by one of Formula 2 through Formula 17: where each of p and q is independently an integer from 1 to 9, where a is an integer from 1 to 6 corresponding to the number of bonding sites of X, n is an integer from 2 to 6 corresponding to the number of generations of branching units of the dendrimer, each of E 1 through E n−1 is independently selected from the organic groups represented by Formula 18 through Formula 22: and E n is H, —OH, —COOH, —SO 3 H, or —OPO(OH) 2 .