Patent ID: 8487070

Claim:
A poly(arylene ether) copolymer that has a crosslinking structure in a polymer chain that is represented by the following Formula 1 and is sulfonated: wherein SAr1 is Ar1 represents a first non sulfonated aromatic, Ar2 represents a second non sulfonated aromatic, and CM represents a crosslinkable moiety, wherein SAr1, Ar1, Ar2, and CM are different respectively, wherein k is in the range of 0.001-1.000, s=1-k, b is in the range of 0.001-1.000, d=1-b, n represents a repeating unit of a polymer, and n is an integer and is in the range of 10 to 500, wherein CM is in CM, X is a halogen, J is R is a triple bond that is substituted by R1 (ethynyl part) a double bond (vinyl part) in R, G is a single bond in which carbon and carbon are directly connected to each other, —O—, —S— or R1 is H, F, C1˜C5 alkyl or R2 is H, X, or C1˜C5 alkyl, Y is a single bond in which carbon and carbon are directly connected to each other, —O—, —S—, A is a single bond in which carbon and carbon are directly connected to each other, —O—, —S—, E is H, CH 3 , F, CF 3 , C1˜C5 alkyl, or L is H, F, or C1˜C5 alkyl, and is a fluorinated phenylene, and M+ is a counterion having a cation charge.