| abstract |
A process for producing a norbornene polymer consisting essentially of a repeating unit of the formula (I) <IMAGE> (I) wherein R1 to R12 are the same or different and are hydrogen, C1-C20 hydrocarbon, or a group having a halogen, oxygen or nitrogen, R5 and R7 may combine to form a ring, and n is an integer of 0 or more; and having a weight average molecular weight as determined by GPC of 1x105 to 1x107. The process comprises polymerizing a norbornene monomer of the formula (II) <IMAGE> (II) wherein R1 to R12 are the same or different and are independently hydrogen, C1-C20 hydrocarbon, or a substituent containing a halogen atom, an oxygen atom or a nitrogen atom; R5 and R7 may combine together to form a ring; and n is an integer of 0 or more, in the presence of a catalyst containing a transition metal compound component containing a transition metal belonging to Group VB, VIB, VIIB or VIII of the Periodic Table, and an aluminoxane components. |