Olefin polymerization catalyst containing an organomagnesium complex and process for synthesis

Claim 1

A PROCESS FOR PRODUCING AN IMPROVED POLYMERIZATION CATALYST COMPRISING REACTING, AS THE SOLE COMPLEXFORMING REACTANTS; MAGNESIUM AND AN AMOUNT OF AN ORGANOHALIDE HAVING THE FORMULA RX, WHERE X IS A HALOGEN ATOM AND R, WHICH MAY BE HALOGEN SUBSTITUTED, IS SELECTED FROM TE GROUP CONSISTING OF ALKYL, ARYL, AND ARYLALKYL RADICALS, IN EXCESS OF THAT REQUIRED TO REACT WITH SAID MAGNESIUM, THEREBY TO FORM A MIXTURE CONSISTING OF BOTH A SOLID AND A LIQUID PHASE AND CONTAINING A COMPLEX AN ORGANO MAGNESIUM COMPLEX IN BOTH OF SAID PHASES REAGENT, THEREAFTER ADDING SAID COMPLEX TO A TITANIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF TITANIUM HALIDES, AND TITANIUM ALCOHOLATES TO FORM AN ACTIVE CATALYST, THE MOLAR RATION OF SAID COMPLEX TO SAID COMPOUND BEING GREATER THAN 0.77.