Olefin polymerization catalysts from soluble magnesium alkoxides made from alkyl or aryl magnesium mixed with a branched or aromatic aldehyde

摘要

A solid catalyst component which is prepared by: mixing an alkyl or aryl magnesium compound with a branched or aromatic aldehyde in the presence of a solvent; adding a tetravalent titanium halide to the solution; recovering the resulting precipitate; and contacting the precipitate with a tetravalent titanium halide.