Patent ID: 6864333
Filing Date: 2005-03-08
Classification: C07D,C07F,C08F

Abstract:
1. A process for the preparation of polymers of ethylene comprising the polymerization reaction of ethylene and optionally one or more olefins in the presence of a catalyst comprising the product obtained by contacting: (A) a metallocene compound of formula (I): wherein the rings containing A and B have a double bond in the allowed position having an aromatic character; A and B are selected from sulfur (S), oxygen (O) or CR R M is an atom of a transition metal selected from group 3, 4, 5, 6 or the lanthanide or actinide groups in the Periodic Table of the Elements, X, which may be the same as or different from each other, is hydrogen, halogen atom, a R p is an integer of from 1 to 3, being equal to the oxidation state of the metal M minus 2; with the proviso that at least one of R and (B) at least one member selected from the group consisting of an alumoxane and a compound of formula D