| abstract |
PROBLEM TO BE SOLVED: To provide a propylene polymer having a vinyl structure at its end so that it can be polymerized with an ordinary olefin polymerization catalyst, and having isotactic regularity enough to maintain rigidity and heat resistance. Provision of propylene polymer. SOLUTION: The propylene polymer is characterized by satisfying the following conditions (A), (B), (C) and (D). (A) the proportion of a meso-racemic-racemic-meso chain of 5 propylene units consisting of head-to-tail bonds measured by 13 C-NMR is 9 mol% or less; (C) Gel permeation chromatography (GP The weight average molecular weight Mw measured in C) is 1000 to 100 0000, (D) 2,1- and 1, (3) The total of the hetero bonds is not more than 0.1 mol%. |