Method of preparing a catalytic composition for dimerization, co-dimerization and oligomerization of olefins
AssigneeIfp Energies Nouvelles
InventorsClaudine Rangheard, Helene Olivier-Bourbigou, Emmanuel Pellier, David Proriol
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Abstract
The present invention describes a method of preparing a catalytic composition used for oligomerization, co-dimerization or polymerization of olefins, wherein the compound obtained upon contacting at least one iron compound with at least one nitrogen-containing compound is subjected to an oxidation stage prior to being mixed with an activating agent and optionally with a solvent. The present invention also describes the catalytic composition obtained by means of said preparation method and the use thereof for oligomerization, co-dimerization or polymerization of olefins.
Claims22
A method of preparing a catalytic composition comprising the following stages:
- a) contacting, optionally in the presence of a solvent, at least one iron compound (compound A) with at least one compound B resulting from the condensation of a compound X with a compound Y whose general formulas are given below:
- R1 to R11, identical or different, representing alkyl groups, saturated or not, cycloalkyl or aromatic, aryl or aralkyl, optionally substituted, hydrogen, a halogenide, alkoxy, aryloxy or amino groups,
- b) optionally isolating at least one product resulting from the reaction of A with B,
- c) oxidizing with an oxidizing agent of the resultant mixture of compounds A and B, or of the product optionally isolated in stage b),
- d) optionally isolating at least one product resulting from stage c),
- e) adding an activating agent (compound C), and
- f) optionally adding a solvent (compound D).
Dependencies are inferred from the claim text.