Process for the preparation of high-impact, transparent, thermoplastic materials, and agent (composition) therefor

摘要

A thermoplastic block copolymer whose branches are arranged in a radial star manner, where the branches each comprise at least two monomer sequences (blocks), characterised in that at least two types of blocks A and B participate in the construction of a branch (where block A essentially comprises polymethacrylate and block B essentially comprises polyacrylate), as obtained by group-transfer polymerisation followed by coupling with a difunctional or polyfunctional coupling agent.