Process for the preparation of high density ethylene polymers in fluid bed reactor

摘要

A catalytic process for preparing ethylene polymers having a density of >/=0.94 to /=22 to /=50,000 pounds of polymer per pound of Ti with a catalyst formed from selected organoaluminum compounds and a precursor composition of the formula MgmTi1(OR)nXp(ED)q wherein ED is a selected electron donor compound m is >/=0.5 to /=2 to 1.5 m+2 R is a C1 to C14 aliphatic or aromatic hydrocarbon radical, or COR' wherein R' is a C1 to C14 aliphatic or aromatic hydrocarbon radical, and X is selected from the group consisting of Cl, Br, I or mixtures thereof, which catalyst is in particulate form and impregnated in a porous inert carrier material.