| 摘要 |
PROBLEM TO BE SOLVED: To provide a cyclic olefin ring-opened copolymer which has high optical characteristics, excellent resin workability, low oxygen permeability, and dynamic strength.SOLUTION: There is provided a cyclic olefin ring-opened copolymer expressed by formula, wherein R1-R12 represent H, halogen, a 1-4C aliphatic hydrocarbon group, or the like. |
