abstract |
The present invention provides a plurality of pendant groups terminated with -CF 2 SO 3 X, -CF 2 SO 2 F or a combination thereof, wherein X is selected from the group consisting of H + and monovalent cations-, and at least one -CF 2 Y terminal group, wherein Y is a fluoropolymer comprising a chlorine atom, a bromine atom, an iodine atom, a nitrile group and a -SO 3 X group. |