Process for the production of cycloolefin random copolymer

Details Process for the production of cycloolefin random copolymer Process for the production of cycloolefin random copolymer

C - Chemistry, Metallurgy

08

F

C08F 232/08 (2006.01) C08F 4/622 (2006.01) C08F 210/00 (2006.01) C08F 210/02 (2006.01) C08G 61/08 (2006.01)

Patent

CA 2166159

There is provided a process for the production of a cycloolefin copolymer which comprises copolymerizing an .alpha.- olefin having 2 or more carbon atoms and a specific cycloolefin in the presence of a specific metallocene type catalyst in a solvent mixture of a hydrocarbon solvent having a solubility parameter (value of .delta.) of 7.7 [(cal/cm3)1/2] or more and a hydrocarbon solvent having a solubility parameter (value of .delta.) of 7.5 [(cal/cm3)1/2] or less as a polymerization solvent. A cycloolefin copolymer having a high molecular weight can be produced in a high concentration by this process at a high yield.

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