OLEFIN POLYMERS AND PRODUCTION PROCESSES THEREOF

摘要

The invention provides an olefin polymer having a narrow molecular weight distribution and a molecular weight falling in a specified range; an olefin polymer having functional groups at the ends;a tapered polymer whose polymer chain contains a segment wherein the monomer composition varies continuously; an olefin polymer comprising different segments in a combined state; and processes for the production of these polymers. Specifically, a polymer of a Colefin having a number-average molecular weight of 500 orabove and an Mw/Mn ratio of 1.5 or below; and a process for the production of olefin polymers by polymerizing a Colefin in the presence of a polymerization catalyst for olefins containing a transition metal compound represented by general formula (I): LMXwherein M is any of Group 3 to 11 transition metal elements of the periodic table; m is 1 to 5; n is a number satisfying the valency of M; L is a ligand coordinated to the central metal M,which has a heteroatom not bonded directly to the central metal; and X is halogeno, a hydrocarbon group, or the like.