| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a styrene-based resin having excellent heat resistance. SOLUTION: The method for producing a coumarin-based compound-aromatic vinyl compound copolymer that comprises 25-58.4 mass% of a coumarin-based compound unit and 41.6-75 mass% of an aromatic vinyl compound unit and has a number-average molecular weight of 5,000-3,000,000 comprises copolymerizing a coumarin-based compound with an aromatic vinyl compound in the presence of a Lewis acid such as a halogenated alkylaluminum compound etc. COPYRIGHT: (C)2009,JPO&INPIT
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