Patent ID: 6930150

Claim:
A method for making a polymer blend composition comprising: blending together a) at least one component A that is a monomer, oligomer, prepolymer, or polymer comprising at least 5% by weight of anionic functional groups selected from the group consisting of sulfonic acid, phosphoric acid, and carboxylic acid; b) at least one component B that is a triblock copolymer comprising less by weight of anionic functional groups than the weight percentage of anionic functional groups of the at least one component A, the triblock copolymer having: (i) a first polymer block comprising an aromatic vinyl compound; (ii) a second polymer block comprising a diene compound; and (iii) a hydroxyl group located at a block copolymer; or a hydrogenation product of the triblock copolymer, or mixtures thereof; and c) at least one component C that is a metal cation, to form a first composition, and melt-processing the first composition to produce a reaction product of the anionic functional groups of the at least one component A and the at least one component C to form the polymer blend composition.