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AMINE NEUTRALIZED SULFONATED BLOCK COPOLYMERS AND METHOD FOR MAKING SAME

  • US 20110086982A1
  • Filed: 10/13/2009
  • Published: 04/14/2011
  • Est. Priority Date: 10/13/2009
  • Status: Active Grant
First Claim
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1. A process for neutralizing a sulfonated block copolymer having at least one end block A and at least one interior block B wherein each A block contains essentially no sulfonic acid or sulfonate ester functional groups and each B block is a polymer block containing from about 10 to about 100 mol percent sulfonic acid or sulfonate ester functional groups based on the number of monomer units of the B block and which are not neutralized, which process comprisesproviding a solution comprising an organic solvent and the non-neutralized block copolymer in micellar form, andadding at least one amine to the solution.

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