| 摘要 |
PROBLEM TO BE SOLVED: To provide a new cyclic olefin-based addition copolymer having excellent low birefringence, transparency, heat resistance and low water absorptivity, and exhibiting high solubility in an organic solvent and melt molding processability; to provide a method for producing the cyclic olefin-based addition copolymer in high economic efficiency and productivity; and to provide an optical member and an optical film obtained by forming the cyclic olefin-based addition copolymer. SOLUTION: The cyclic olefin-based addition copolymer has a structural unit (1) represented by formula (1), and a structural unit (2) represented by formula (2). COPYRIGHT: (C)2008,JPO&INPIT
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