| abstract |
The invention relates to a catalytic composition for the dimerization, codimerization and oligomerization of olefins resulting from the dissolution of a nickel complex mixed or complexed with a tertiary phosphine in the medium resulting from the mixture of at least one halide of quaternary ammonium and / or at least one quaternary phosphonium halide, at least one aluminum halide, at least one aromatic hydrocarbon and optionally an organometallic aluminum compound. The invention also relates to a process for the dimerization, codimerization and oligomerization of olefins with this composition. |