Patent ID: 7504461

Claim:
An ion-conductive copolymer having the formula [[(—Ar 1 —X—Ar 1 —Y—Ar 3 —Y—) n —Ar 1 —X—Ar 1 —Y—] a —(Ar 2 —X—Ar 2 —Y—Ar 3 —Y—) b ] k or the formula [(—Ar 3 —Y—(Ar 1 —X—Ar 1 ) n —Y—Ar 3 —Y) a —(Ar 2 —X—Ar 2 —Y—Ar 3 —Y—) b ] k where Ar 1 and Ar 2 are independently phenyl, substituted phenyl napthyl, terphenyl, aryl nitrile, substituted aryl nitrile, and Ar 1 further comprises an ion-conducting group, X is independently —C(O)— or —S(O) 2 , Y is independently —O— or —S—, Ar 3 is the same or different from each other and are selected from the group wherein the ion-conductive groups comprise —SO 3 − , —COO − , —PO 3 H − or sulfonimide; n is between 2 and 12, a and b are mole fractions where a+b=1, a is between 0.01 and 0.5 and b is between 0.5 and 0.99 and k is between 1 and 150.