| abstract |
A catalyst formed from selected organo aluminum compounds and a precursor composition of the formulan wherein ED is a selected electron donor compoundn m is ≥ 0.5 to ≤ 56 n is 0, 1 or 2 p is ≥ 2 to ≤ 116 q is ≥ 2 to ≤ 85 R is a C 1 to C 14 aliphatic or aromatic hydrocarbon radical, or COR' wherein R' is a C 1 to C 14 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. A process for preparing such catalyst. |