Patent ID: 8445631
Filing Date: 2013-05-21
Classification: B01D,B01J,C08F,C08G,H01M,Y02E,Y02P

Abstract:
1. A process for neutralizing a non-neutralized sulfonated block copolymer having a general configuration A-B-D-B-A, A-D-B-D-A, (A-D-B) n (A), (A-B-D) n (A), (A-B-D) n X, (A-D-B) n X, or mixtures thereof, wherein n is an integer from 2 to about 30, X is coupling agent residue, each A block contains essentially no sulfonic acid or sulfonate functional groups, each B block is a polymer block containing from about 10 to about 100 mol-% sulfonic acid or sulfonate functional groups based on the number of monomer units of the B block, and each D block is an impact modifier block having a glass transition temperature less than 20° C., which process comprises providing a micellar solution comprising from about 1 to about 30%-wt, of the non-neutralized block copolymer and an organic solvent, wherein the organic solvent consists of one or more aprotic, apolar aliphatic solvents, and adding at least one metal compound to the solution, wherein the metal has an atom number of at least 11.