Enhanced solubility of magnesium halides and catalysts and...

C - Chemistry – Metallurgy – 08 – F

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C08F 110/02 (2006.01) C07F 3/02 (2006.01) C07F 7/00 (2006.01) C08F 4/654 (2006.01)

Patent

CA 2489843

A method for increasing the solubility of a magnesium halide includes providing an electron donating solvent, contacting a magnesium halide with the solvent; and providing an electron donor compound to form a magnesium halide composition. The composition is characterized by solubility in the electron donor solvent that does not decrease up to the boiling point of the solvent. A polymerization catalyst precursor composition comprises the product of mixing the magnesium halide composition with a transition metal compound. Active catalysts prepared from such precursors and a method of polymerization using such catalysts are also disclosed.

Procédé visant à accroître la solubilité d'un halogénure de magnésium, qui comporte les étapes consistant à : prévoir un solvant donneur d'électrons, mettre en contact un halogénure de magnésium avec le solvant, et prévoir un composé donneur d'électrons en vue de former une composition d'halogénure de magnésium. La composition est caractérisée en ce que la solubilité du solvant donneur d'électrons de diminue pas, jusqu'au point d'ébullition du solvant. Une composition de précurseur de catalyseur de polymérisation comprend le produit résultant du mélange de la composition d'halogénure de magnésium et d'un composé de métal de transition. L'invention concerne aussi les catalyseurs actifs préparés à partir de ces précurseurs, et un procédé de polymérisation utilisant de tels catalyseurs.

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