Patent ID: 8163864

Claim:
Sulfonated polyarylene compounds according to at least one of the general formulas (I)-(IV) and wherein: Ar 1 are uninuclear and/or multinuclear aromatics and G 1 is a group with electron acceptor properties and G 2 is an ether and/or a sulfide and/or a ketone and/or a sulfone and/or a phenyl phosphinoxide and/or a sulfoxide group, wherein if G 2 is an ether group, Ar is more than one uninuclear aromatic or one or more multinuclear aromatics and R 1 , R 2 , R 3 , R 4 are substituents or R 1 through R 4 equals hydrogen or at least one radical R 1 through R 4 not equal to hydrogen and this is a substituent and y≧0 and z≧1 and x≧5 and Ar=are one or more uninuclear and/or multinuclear aromatics and/or one or more biphenyls, and sulfonic acid groups are bound at least to the “Ar” aromatic groups that form the side chains.