| 摘要 |
The present invention provides: a catalyst for norbornene polymerization, which contains a transition metal complex (A) that is represented by general formula (1); and a method for producing a norbornene (co)polymer, especially a norbornene copolymer having monomer units that are represented by general formula (2) and general formula (3), wherein a norbornene monomer is homopolymerized or copolymerized in the presence of the polymerization catalyst. Preferable examples of the transition metal complex (A) include (p-allyl){4-(2,6- diisopropylphenylimino)-2-penten-2-olato-? 2N,O}pallarium and (p-allyl){4-(1-naphthylimino)-2-penten-2-olato- ? 2N,O}pallarium. (In the formulae, the symbols are as defined in the description.) A norbornene (co)polymer which has excellent transparency, excellent heat resistance, excellently low water absorption and excellent electrical insulation characteristics can be efficiently produced by the present invention. |
