| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide 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. <P>SOLUTION: The polymer of a 2-20C olefin has a number-average molecular weight of 500 or above and an Mw/Mn ratio of 1.5 or below. The process for the production of the olefin polymer includes polymerizing the 2-20C olefin in the presence of a polymerization catalyst for olefins containing a transition metal compound and represented by general formula (I): L<SB POS="POST">m</SB>MX<SB POS="POST">n</SB>(I) (wherein, 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 halogen, a hydrocarbon group, or the like). <P>COPYRIGHT: (C)2012,JPO&INPIT |
