| 摘要 |
A copolymer blend suitable for impact-resistant moldings comprises (1) a copolymer of an alkenyl aromatic monomer (pref. styrene) and an isopropenyl aromatic monomer (pref. alphamethylstyrene) and (2) one or more of the following copolymers: an AB block copolymer, an ABA block copolymer, or an AB(BA)n block copolymer. A is a block of a copolymer derived from an alkenyl aromatic monomer and the isopropenyl aromatic monomer, B is a block of conjugated diene elastomer (polybutadiene, polyisoprene, or copolymers of butadiene and isoprene), and n is 2 - 10.
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