Olefin polymerization

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 4/642 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2043904

A process is disclosed for the particle form polymerization of olefins. The process employs a titanium-containing having hydrocarbon soluble titanium components. The resulting catalyst is pretreated with an organometallic reducing agent prior to the introduction of the catalyst into the polymerization zone to give a catalyst which can be used satisfactorily in a loop reactor with lower levels of cocatalyst.

L'invention porte sur un procédé de polymérisation à l'état particulaire d'oléfines. Le procédé utilise un produit contenant du titane et comportant des constituants à base de titane solubles dans les hydrocarbures. Le catalyseur ainsi obtenu est prétraité avec un réducteur organométallique avant son introduction dans la zone de polymérisation, en vue d'obtenir un catalyseur pouvant être utilisé efficacement dans un réacteur en boucle en présence de concentrations moindres d'un cocatalyseur.

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