Patent ID: 6864208

Claim:
A process for preparing a catalyst solid for olefin polymerization comprising A) at least one magnesium halide, B) at least one metallocene complex and C) at least one compound capable of forming metallocenium ions, which comprises i) firstly preparing finely divided support particles consisting of the magnesium halide A) and C 1 -C 8 -alcohol having a mean particle diameter of from 1 to 200 μm from an adduct of the magnesium halide A) and a C 1 -C 8 -alcohol, where the adduct contains from 1.5 to 5 mol of the C 1 -C 8 -alcohol per mole of magnesium halide, ii) then depositing the compound C) capable of forming metallocenium ions on the finely divided support particles and iii) subsequently bringing the reaction product hereby obtained into contact with the metallocene complex B).