Patent ID: 7763702

Claim:
A phenoxy sulfonimide functionalized polyphosphazene copolymer of the formula [NP(ZR 2 ) x (ZC 6 H 4 SO 2 NR 1 SO 2 R f ) 2-x ] n where n is ≧3 and where x is ≦2, R f is a C 1 -C 8 perfluoroalkyl, where R 2 is selected from the group consisting of —CH 2 CH 3 , —C 6 H 4 CH 3 , —CH 2 CH 2 OCH 2 CH 2 OCH 3 , —CH 2 CH 2 OTHP, —C 6 H 4 COOPr, —CH 2 CF 3 , —CH 2 CF 2 OCF 2 CF 2 OCF 3 , —C 6 H 4 CF 3 , —C 6 F 5 and mixtures thereof, Z is O or NH, and R 1 is selected from the group consisting of Na, Li, H, and K where THP is tetrahydropyranyl.