Patent ID: 6124412
Filing Date: 2000-09-26
Classification: C08F

Abstract:
A solid supported Ziegler-Natta transition-metal based catalyst precursor made by the process comprising the step of reacting the following components to form a precursor component:(a) at least one transition metal compound, said transition metal selected from the group consisting of titanium, vanadium and zirconium;(b) at least one metal halide complex selected from the group consisting of MgCl.sub.2, MgBr.sub.2, CaBr.sub.2, and CaCl.sub.2 ;(c) at least one organic electron donor compound selected from the group consisting of tetrahydrofuran, dioxane, acetone, methyl formate, and ethyl ether; and(d) an effective amount of an alumoxane compound, wherein said alumoxane compound comprises methylalumoxane,wherein said precursor component is impregnated onto a support to form said solid supported Ziegler-Natta transition-metal based catalyst precursor.