Patent ID: 7541411

Claim:
A norbornene ring-opened (co)polymer comprising structural units (I) represented by the following formula (I): wherein m and n are each independently an integer of 0 to 2, X is a group represented by the formula —CH═CH— or a group represented by the formula —CH 2 CH 2 —, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 and R 9 are each independently an atom or a group selected from the group consisting of a hydrogen atom, a halogen atom, a substituted hydrocarbon group, and an unsubstituted hydrocarbon group, and a polar group, wherein the hydrocarbon group has 1 to 30 carbon atoms, wherein when the hydrocarbon group is substituted, the substituent is selected from the group consisting of an oxygen atom, a nitrogen atom, a sulfur atom, and a silicon atom, and s, t and u are each independently an integer of 0 to 3.