Patent ID: 7202314

Claim:
A solid catalyst component for the (co)polymerization of olefins comprising titanium, magnesium, halogen and a succinate, which is obtained by a process comprising the following steps: (a) dissolving a halide of magnesium in a solvent system comprising an organic epoxy compound or an organic phosphorus compound and optionally an inert diluent, thereby forming a solution; (b) mixing the solution of step (a) with a titanium compound, thereby forming a mixture; (c) precipitating a first solid from the mixture of step (b) in the presence of a succinate, an auxiliary precipitant, or mixtures thereof; (d) if a succinate is not used in step (c), contacting the first solid of step (c) with a succinate, thereby forming a second solid, and (e) treating the solid of step (c) or (d) with a titanium compound optionally in the presence of an inert diluent.