| abstract |
The present invention refers to a catalytic system for the polymerization of ethylene, characterized in that it comprises: a) at least two different metallocenes, selected from the mono-, di- or tri-cyclopentadienyl and their derivatives of transition metals of Groups 4b, 5b and 6b of the Periodic Table, each having different propagation rate and determination constants for the polymerizations of ethylene and (b) an alumoxane. |