Title: Process for production of cycloolefin random copolymer
Application Number: 95119491 Application Date: 1995.12.28
Publication Number: 1131162 Publication Date: 1996.09.18
Approval Pub. Date: 2003.03.12 Granted Pub. Date: 2003.03.12
International Classifi-cation: C08F210/02;C08F232/08
Applicant(s) Name: Mitsui Petrochemical Industries, Ltd. Address:
Inventor(s) Name: Abe Yoshiharu;Aine Toshihiroshi
Attorney & Agent: YANG LIQIN
Abstract:
    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) E,fra 1/2 EE ] or more and a hydrocarbon solvent having a solubility parameter (value of delta ) of 7.5 [(cal/cm3) E,fra 1/2 EE ] 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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