C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/60 (2006.01) C08F 4/64 (2006.01) C08F 10/00 (2006.01) C08F 4/619 (2006.01) C08F 4/6192 (2006.01)
Patent
CA 2228771
Inorganic and organic impurities are removed from a metallocene catalyst compound comprising the steps of (a) separating inorganic impurities from said compound by forming a solution of said compound in an organic solvent medium which is substantially a non-solvent for said inorganic impurities, (b) treating the solution of said compound with a particulate absorbing material so as to absorb and remove organic impurities from said solution, and (c) separating the solid material, including said particulate absorbing material, from said solution. Optionally, water can be removed by adding a drying agent.
Les impuretés inorganiques et organiques sont enlevées d'un composé catalyseur en alliage organométallique selon le schéma suivant: (a) séparation des impuretés inorganiques dudit composé par formation d'une solution dudit composé dans un milieu solvant organique qui est sensiblement un non-solvant pour lesdites impuretés inorganiques, (b) traitement de la solution dudit composé avec une substance absorbante particulaire de façon à absorber et retirer les impuretés inorganiques de ladite solution, et (c) séparation de la substance solide, y compris ladite substance absorbante particulaire, de ladite solution. Eventuellement, il est possible de retirer l'eau en ajoutant un agent dessiccateur.
Diefenbach Steven P.
Lee John Y.
Albemarle Corporation
Macrae & Co.
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