Patent ID: 6211110
Filing Date: 2001-04-03
Classification: C07C,C07F,C08F,Y10S

Abstract:
A metallocene complex, which can be used in the formation of a catalyst for the (co)polymerization of ethylene and .alpha.-olefins, having the following formula(II): ##STR24##wherein: M represents a metal selected from titanium, zirconium or hafnium;each A' or A"" independently represents an organic group containing an .eta..sup.5 -cyclopentadienyl ring of an anionic nature, coordinated to the metal M;each R' or R"" independently represents a group of an anionic nature .sigma.-bound to the metal M;B represents an unsaturated divalent organic residue having from 1 to 30 carbon atoms, bound, respectively, to the ring of group A' and to the --CH.sub.2 -- methylene group by means of unsaturated atoms different from hydrogen.