Patent ID: 7271119

Claim:
A process for preparing an olefin polymerization catalyst component in the form of particles, said process 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; adding said solution of said complex to at least one compound of a transition metal to produce an emulsion having a dispersed phase comprising more than 50 mol % of the Group 2 metal in said complex; agitating the emulsion in order to obtain droplets of said dispersed phase within the average size range of 5 to 200 μm; solidifying said droplets of the dispersed phase to obtain particles; and recovering the solidified particles of the olefin polymerization catalyst component, wherein a turbulence minimizing agent is added to the reaction mixture before solidifying said droplets of the dispersed phase, said turbulence minimizing agent being inert and soluble in the reaction mixture under the reaction conditions.