Amine neutralized sulfonated block copolymers and method for making same
AssigneeKraton Polymers U.S. LLC
InventorCarl Lesley Willis
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Abstract
An Amine neutralized sulfonated block copolymer and a method for neutralizing a sulfonated block copolymer, the process including providing a solution comprising an organic solvent and the non-neutralized block copolymer in micellar form, and adding at least one amine to the solution.
Claims29
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 comprises
- providing a solution comprising an organic solvent and the non-neutralized block copolymer in micellar form, and
- adding at least one amine to the solution.
A neutralized sulfonated block copolymer which is solid in water comprising at least two polymer end blocks A and at least one polymer interior block B, wherein
- a. 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;
- b. the sulfonated B blocks are neutralized with a multi-functional amine having from two to four nitrogen functionalities, wherein from 95% to 100% of the sulfonic acid or sulfonate ester functional groups in the B block are neutralized.
Dependencies are inferred from the claim text.