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1. (WO2001032739) PROCESS FOR PRODUCING CYCLOOLEFIN POLYMER

Pub. No.:    WO/2001/032739    International Application No.:    PCT/JP2000/007620
Publication Date: Fri May 11 01:59:59 CEST 2001 International Filing Date: Tue Oct 31 00:59:59 CET 2000
IPC: C08G 61/06
C08G 61/08
Applicants: ZEON CORPORATION

SUGAWARA, Tomoo

Inventors: SUGAWARA, Tomoo

Title: PROCESS FOR PRODUCING CYCLOOLEFIN POLYMER
Abstract:
A process for producing a cycloolefin polymer which comprises mixing a starting liquid reaction mixture comprising a cycloolefin with a catalyst comprising a complex comprising ruthenium and, coordinated thereto as a ligand, at least one member selected among neutral electron donors and heteroatom-containing carbene compounds and polymerizing the cycloolefin by ring-opening metathesis polymerization, characterized in that the starting liquid reaction mixture is prepared in an inert gas atmosphere. The ring-opening metathesis polymerization is conducted by bulk polymerization or solution polymerization. According to need, a Lewis acid is incorporated in the starting liquid reaction mixture comprising a cycloolefin, and a Lewis base is used in combination with the catalyst. By the process, a polymer which need not be postcured after polymerization can be obtained at a high conversion.