Patent ID: 7569648
Filing Date: 2009-08-04
Classification: C08F

Abstract:
1. A process for producing a polymer of ethylene containing from 1.0 to 30% by weight of at least one derived units of alpha-olefins, the process comprising contacting, under polymerization conditions, ethylene and at least one alpha-olefins in the presence of a catalyst system obtained by contacting: a) a metallocene compound of formula (I)  wherein:  M is zirconium, titanium or hafnium;  X, equal to or different from each other, are hydrogen atoms, halogen atoms, or a R  R b) an alumoxane or a compound that forms an alkyl metallocene cation; and c) an organo aluminum compound, wherein the alpha-olefins are selected from 1-butene, 1-hexene, or 1-octene.