Patent ID: 7220694
Filing Date: 2007-05-22
Classification: C08F

Abstract:
1. An olefin polymerization catalyst comprising (A) a solid catalyst component prepared by contacting (a) a magnesium compound whose particle size distribution index (P), as defined in formula (I-1), is smaller than 4.0, P<4.0: wherein D 90 indicates the particle diameter of the compound particles corresponding to the cumulative weight fraction of 90% in the particle size distribution thereof computed from light transmittance through a suspension of the compound particles in a hydrocarbon: and D 10 indicates the particle diameter of the compound particles corresponding to the cumulative weight fraction of 10% therein, and prepared by reacting metallic magnesium, an alcohol, and 0.0001 to less than 0.06 gram atoms, in terms of halogen atoms relative to one gram atom of magnesium, of a halogen and/or a halogen-containing compound, at 30 to 60° C. with (b) a titanium compound of the following general formula (I-3), and (B) an organometallic compound: wherein X indicates a halogen atom; R indicates a hydrocarbon group having from 1 to 10 carbon atoms, and R's may be the same or different; and n indicates an integer of from 0 to 4.