Patent ID: 7256150

Claim:
A process for producing an olefin polymerisation catalyst component in the form of particles, comprising: preparing a solution of a complex of a Group 2 metal and an electron donor by reacting a compound of said Group 2 metal with said electron donor or a precursor thereof in an organic liquid reaction medium; reacting said complex, in solution, with at least one compound of a transition metal to produce two oils, wherein the first oil is denser oil comprising more than 50 mol % of the Group 2 metal in said complex and the second oil is a lighter oil being immiscible with the denser oil; preferentially sorbing said denser oil into a porous carrier comprising carrier particles having an average particle size of 10 to 200 μm and a pore volume of 0.5 to 4 ml/g; solidifying said sorbed oil contained by said carrier, wherein said solidified sorbed oil comprises catalyst component particles; and recovering, washing and drying the carrier to obtain said catalyst component particles.