Patent ID: 7888438
Filing Date: 2011-02-15
Classification: C08F

Abstract:
1. A catalyst for olefin polymerization comprising: a solid titanium catalyst component (I) comprising titanium, magnesium, halogen, and a cyclic ester compound (a), which is a cyclohexane-1,2-dicarboxylic acid diester represented by the following formula (1a): wherein n is an integer of 6; bonds between the carbon atoms in the cyclic backbone are all single bonds; a plurality of R a plurality of R's are each independently an atom or group selected from the group consisting of a hydrogen atom, an aliphatic hydrocarbon group having 1 to 20 carbon atoms, a halogen atom, a nitrogen-containing group, an oxygen-containing group, a phosphorus-containing group, a halogen-containing group and a silicon-containing group, and they may be bonded to each other to form a ring; and a double bond may be contained in the backbone of the ring foamed by the bonding of R's, and in the case where two C said cyclohexane-1,2-dicarboxylic acid diester having a substituent on the 3-position or having substituents on the 3-position and the 6-position, and an organometallic compound catalyst component (II) containing a metal element selected from Groups I, II, and XIII of the periodic table, wherein the amount of the metal (M-2) (mol) in the organometallic compound catalyst component (II) and the amount of titanium (M-Ti) (mol) in the solid titanium catalyst component (I) satisfies the following relationship: