| abstract |
The present invention relates to the preparation of novel nickel complexes containing iminopyrrolyl type ligands, of general molecular structure (I), and their use as active catalysts in the polymerization reaction of ethylene to hyperbranched polyethylene. The structure of the ligand precursor is such as to allow the occurrence of a cyclometallation reaction by activation of a CH bond, in the coordination reaction at the metal center, and the generation of a C, N, N complex. '-tridenté. |