Patent ID: 7615597
Filing Date: 2009-11-10
Classification: C08F,Y10S

Abstract:
1. A process for producing a polymer of ethylene containing from 0.1 to 99% by mol of at least one derived unit of alpha-olefins of formula CH 2 ═CHZ, wherein Z is a C 2 -C 20 alkyl radical, and optionally from 0 to 5% by mol polyene, comprising contacting, under polymerization conditions, ethylene, said at least one alpha-olefin and optionally said polyene, in the presence of a catalyst system obtained by contacting: a) a metallocene compound of formula (IV) or (V): wherein M is zirconium, hafnium or titanium; X, equal to or different from each other, is a hydrogen atom, a halogen atom, an R, OR, OSO R R R L is a divalent bridging group selected from C b) an alumoxane or a compound that forms an alkyl metallocene cation.