Patent ID: 6150483
Filing Date: 2000-11-21
Classification: C08F

Abstract:
Process for the preparation of a rubbery copolymer, wherein ethylene, one or more .alpha.-olefins, and optionally one or more polyunsaturated compounds are contacted under polymerization conditions with a catalyst system comprising a soluble vanadium compound and an organometal compound,wherein the organometal complex in the catalyst system comprises an aluminum complex that satisfies the general formula: ##STR5## wherein each individual Me.sup.1 comprises aluminum, each individual R.sub.u comprises hydrogen or a hydrocarbon group having 1-20 C atoms,N--R.sup.1 comprises a group where R.sup.1 comprises hydrogen, a hydrocarbon group having 1-20 C atoms or a group with the general formula MR.sup.3.sub.3,wherein M comprises an element chosen from group 14 of the Periodic System of Elements, each individual R.sup.3 comprises hydrogen, a hydrocarbon group having 1-20 C atoms or a heteroatom containing group,X.sup.1 comprises a halogen atom, andn=2, u>0,v>1, andu+v+2/n=p=3, wherein p=valency of Me.sup.1.