| abstract |
A catalytic composition useful for sizing, co-sizing and oligomerizing the olefins results from dissolving a nickel compound, optionally mixed or complexed with a ligand, in a medium resulting from the mixture: DOLLAR A - from at least one quaternary ammonium halide and / or at least one quaternary phosphonium halide, DOLLAR A - of at least one aluminum halide and DOLLAR A - of at least one aluminoxane. |