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US 10,646,860 B2Granted
Catalytic composition comprising nickel, a phosphine-type ligand and a Lewis base, and use thereof in an olefin oligomerisation method
AssigneeIfp Energies Nouvelles
InventorsPierre-Alain Breuil, Olivia Chaumet-Martin
Life of this patent
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Abstract
The invention concerns a catalytic composition comprising: at least one nickel precursor with an oxidation number of (+II), at least one phosphine ligand with formula PR1R2R3 in which the groups R1, R2 and R3, which may be identical or different and which may or may not be bonded together, and at least one Lewis base, said composition having a molar ratio of the phosphine ligand to the nickel precursor of less than or equal to 5 and a molar ratio of the Lewis base and phosphine ligand together to the nickel precursor of greater than or equal to 5.
Claims16
A catalytic composition comprising:
- a at least one nickel compound with an oxidation number of (+II),
- b at least one phosphine ligand with formula PR1R2R3, in which the groups R1, R2 and R3, which may be identical or different, and which may or may not be bonded together, are selected from:
- aromatic groups which may or may not be substituted and which may or may not contain heteroelements,
- and/or from hydrocarbyl groups, which may or may not be cyclic, which may or may not be substituted and which may or may not contain heteroelements,
- c an activating agent selected from the group formed by chlorine- and bromine-containing compounds of hydrocarbyl aluminum, used alone or as a mixture, and
- d at least one Lewis base,
- wherein said composition having a molar ratio of the phosphine ligand to the nickel compound of less than or equal to 5, a molar ratio of the Lewis base and phosphine ligand together to the nickel compound comprised of between 5 to 30, and a molar ratio of the activating agent to the nickel compound of greater than or equal to 6.
4 more elements
Dependencies are inferred from the claim text.