Olefin polymerization process

Claim 1

PROCESS FOR POLYMERIZING ETHYLENE AT A TEMPERATURE OF ABOUT 30-80* C. UNDER A PRESSURE OF ABOUT 1 TO 10 ATMOSPHERES, COMPRISING MAKING A COMPLEX OF AN ALUMINUM ALKYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIETHYL ALUMINUM CHLORIDE, DIETHYL ALUMINUM BROMIDE AND TRIETHYL ALUMINUM AND TICL4 THE MOLAR RATIO OF ALUMINUM ALKYL COMPOUND TO TITANIUM COMPOUND BEING IN THE RANGE OF ABOUT 0.2:1-12:1, IN A PARAFFINIC HYDROCARBON HAVING A BOILING POINT WITHIN THE LIMITS OF ABOUT 50* TO 300* C. AS INERT DILUENT, AGITATING THE RESULTING CATALYST SLURRY, WHILE HEATING TO ACTIVATE SAME, FEEDING ETHYLENE GAS INTO SAID SLURRY TO BE POLYMERIZED TO FORM A POLYETHYLENE SLURRY IN SAID DILUENT, THEREAFTER ADDING ADDITIONAL AMOUNTS OF ALUMINUM ALKYL COMPOUND AND OF TICL4 SOLUTION SEPARATELY TO THE RESULTING REACTION MIXTURE, MIXING THE ADDED CATALYST COMPONENT IN THE REACTION MIXTURE, AND FINALLY RECOVERING POLYETHYLENE FROM THE REACTION MIXTURE.