RUTHENIUM COMPLEXES, PROCESS FOR PREPARATION THEREOF, AND PROCESSES FOR PRODUCING OPEN-RING POLYMERS OF CYCLOOLEFINS AND HYDROGENATION PRODUCTS THEREOF BY USING THE COMPLEXES AS CATALYST

摘要

The invention relates to ruthenium complexes wherein a heteroatom-containing carbene compound having a six-membered ring structure is bonded to ruthenium and a process for the preparation thereof; a process for producing open-ring polymers of cycloolefins by subjecting a cycloolefin to ring-opening metathesis polymerization in the presence of such a ruthenium complex; and a process for producing hydrogenated open-ring polymers of cycloolefins by hydrogenating the carbon-carbon double bonds of the above open-ring polymers. The invention gives hydrogenated open-ring polymers having physical properties different from those of hydrogenated open-ring polymers of the prior art. Particularly, the use of dicyclopentadiene can give a hydrogenated open-ring polymer excellent in heat resistance, and this polymer can be advantageously used as members or moldings for medical appliances or electrical components.