Modified block copolymers and processes for the preparation...

Details Modified block copolymers and processes for the preparation... Modified block copolymers and processes for the preparation...

C - Chemistry, Metallurgy

08

F

400/2042

C08F 8/46 (2006.01) C08F 287/00 (2006.01)

Patent

CA 1233926

A B S T R A C T MODIFIED BLOCK COPOLYMERS AND PROCESSES FOR THE PREPARATION THEREFOR Thermally stable, selectively hydrogenated monoalkenyl- aromatic hydrocarbon-conjugated diene block copolymers wherein at least one acid compound is grafted to the block copolymer at a secondary or tertiary carbon position and process for the preparation of such modified copolymers by a) melt-mixing a block copolymer and an acid moiety, adding a free radical initiator and graft-reacting under free radical conditions, or b) dissolving a block copolymer and an acid moiety in a suitable solvent, adding a free radical initiator and graft-reacting under free radical conditions.

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