PROCESS FOR THE PREPARATION OF AN OLEFIN POLYMER

摘要

Crystalline, isotactic homopolymers of cycloolefins or elastic copolymers made from cycloolefins and linear olefins are obtained, without ring opening of the cycloole-fins, at industrially favorable polymerization temperatures by means of a catalyst which comprises a stereorigid, chiral metallocene compound of groups IVb to Vlb of the Periodic Table of the Elements and an aluminoxane.