Patent ID: 7888437
Filing Date: 2011-02-15
Classification: B01J,C08F

Abstract:
1. A process for producing an olefin polymer, comprising polymerizing an olefin having 3 or more carbon atoms in the presence of a catalyst for olefin polymerization comprising a solid titanium catalyst component (I) which comprises titanium, magnesium, halogen, and a cyclic ester compound (a) specified by the following formula (1): wherein n is an integer of 5 to 10, R a single bond (excluding C an organometallic compound catalyst component (II) which comprises a metal element selected from Groups I, II and XIII of the periodic table, at an internal pressure of the polymerization vessel which is 0.4 times or more as high as the saturation vapor pressure of the olefin at a polymerization temperature.