Patent ID: 7202315
Filing Date: 2007-04-10
Classification: C08F

Abstract:
1. A process for homopolymerizing ethylene comprising contacting under polymerization conditions, ethylene with a catalyst system obtained by contacting: A) a bis amido compound of formula (I) wherein Ti is titanium; N is a trivalent nitrogen atom; Y is equal to or different from each other, and is selected from the group consisting of Si, Ge and Sn; X is equal to or different from each other, and is selected from the group consisting of hydrogen, halogen, linear or branched, saturated or unsaturated C R R Q is a neutral Lewis base; and m is an integer ranging from 0 to 2; the bis-amido compound optionally being present in a dimer form; B) one or more activating cocatalysts selected from i) compounds of formula U ii) neutral, strongly Lewis acidic compounds comprising at least one boron atom or combinations thereof; C) optionally when X is halogen, one or more aluminum alkyls or alumoxanes, wherein the process produces an ethylene homopolymer with a long chain branch content higher than 0.05 per 1000 carbon atoms.