| 摘要 |
A norbomene addition copolymer obtained by subjecting a norbornene monomer (A), an aromatic vinyl compound (B), and an ±-olefin having 2 to 20 cabon atoms (C) to addition copolymerization, the sum of the content of repeating units derived from the norbomene monomer (A) and the content of repeating units derived from the aromatic vinyl compound (B) being 25 to 90 mol% based on the total repeating units, and the content of repeating units derived from the aromatic vinyl compound (B) being 0.55 to 10 (mol) times the content of repeating units derived from the norbornene monomer (A); and a molded article obtained by molding the norbornene addition copolymer. According to the present invention, a norbomene addition copolymer exhibiting excellent transparency, a high refractive index, and a small intrinsic birefringence value, and a molded article obtained by molding the norbomene addition copolymer are provided.
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