Patent ID: 7091289
Filing Date: 2006-08-15
Classification: C08F

Abstract:
1. A catalyst component for homopolymerization or co-polymerization of ethylene, comprising at least one electron donor compound supported on a composition containing magnesium and titanium, wherein the electron donor compound is at least one selected from the group consisting of aliphatic ethers having total from 2 to 12 carbon atoms, cyclic ethers having from 3 to 5 carbon atoms, aromatic ethers having total from 7 to 8 carbon atoms, saturated or unsaturated aliphatic ketones having from 3 to 6 carbon atoms, and alicyclic ketones having from 5 to 10 carbon atoms, wherein the composition containing magnesium and titanium is prepared by dissolving a magnesium compound into a solvent system to form a homogeneous solution and then contacting the solution with a titanium compound in the presence of a precipitation aid to precipitate the composition and wherein the solvent system comprises an organic epoxy compound and an organophosphorus compound.