Multi-block copolymer compositions

Abstract

To provide multi-block copolymer compositions that reduce or eliminates the tendency of the copolymer compositions to have large phase domains, and methods of making the same.SOLUTION: A copolymer composition comprises: a multi-block copolymer comprising a first block and a second block, wherein the first block is substituted with an amount of heavy atoms that is effective to render it more radiopaque than the second block; and wherein the multi-block copolymer has a number average molecular weight of 100 kDa or greater; wherein the multi-block copolymer is in the form of a single phase having a glass transition temperature for the single phase that is greater than 37°C; or wherein the copolymer composition comprises a discontinuous first polymer phase having a first glass transition temperature greater than 37°C and a continuous second polymer phase having a second glass transition temperature greater than 37°C, and has a specific phase separation morphology.SELECTED DRAWING: None

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