Patent ID: 6838412
Filing Date: 2005-01-04
Classification: C08F

Abstract:
1. An α-olefin polymerization catalyst consisting essentially of: (A) a solid catalyst component containing a titanium compound obtained by treating a solid product having a titanium content of 0.01 to 1.3% by weight obtained by reducing titanium tetrabutoxy titanium with n-butyl magnesium chloride in the presence of tetraethoxy silane and diisobutylphthalate, with diisobutylphthalate, and treating the ester-treated solid with a mixture of di-n-butyl ether and titanium tetrachloride or a mixture of di-n-butyl ether, titanium tetrachloride and diisobutylphthalate, wherein the amount of di-n-butyl ether is 0.1 to 100 mol per 1 mol of the titanium atom contained in the solid product, the amount of the titanium tetrachloride is 1 to 1000 mol per 1 mol of the titanium atom contained in the solid product and the amount of diisobutylphthalate is 30 mol or less per 1 mol of the titanium atom contained in the solid product; (B) triethyl aluminum (C) an organosilicon compound represented by the general formula R