Patent ID: 8685879

Claim:
A solid titanium catalyst component for the production of a polyolefin, comprising: a titanium compound; a magnesium-based support; the solid titanium catalyst component having a substantially spherical shape and a median diameter from about 5 to about 150 Î¼m (on a 50% by volume basis); and the solid titanium catalyst component made by a process comprising contacting a non-reducible magnesium compound, an alkylepoxide, a Lewis base, and an organic solvent to form an intermediate; wherein the organic solvent contains up to 25% toluene and at least one non-aromatic alkane-based solvent, wherein the intermediate forms at least two phases subsequent to the addition of a titanium halide: one phase comprising magnesium compounds and a second organic solvent phase, followed by forming an emulsion of the two phases; then raising the emulsion to a greater temperature to solidify the magnesium phase to form the solid titanium catalyst component and separating the solidified solid titanium catalyst component having a substantially spherical shape.