Polymerization catalyst for .alpha.-olefin and method for...

C - Chemistry – Metallurgy – 08 – F

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C08F 4/646 (2006.01) C08F 10/00 (2006.01) C08F 32/00 (2006.01) C08F 4/619 (2006.01) C08F 4/6192 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 110/06 (2006.01)

Patent

CA 2066247

The present invention is directed to a method for polymerizing an .alpha.-olefin characterized by using a catalyst system which is obtained by reacting a halogenated metallocene compound with an organometallic compound, and then bringing the resultant reaction product into contact with a compound which will be a stable anion by reaction with the reaction product of the halogenated metallocene compound and the organometallic compound. When the method of the present invention is carried out, a polyolefin can be obtained by the use of the inexpensive catalyst in a high activity per unit amount of the catalyst.

L'invention porte sur une méthode pour polymériser une alpha-oléfine, en présence d'un système catalytique obtenu par réaction d'un métallocène halogéné avec un composé organométallique, puis par mise en contact du produit de réaction résultant avec un composé qui sera un anion stable par réaction avec le produit de réaction du métallocène halogéné et du composé organométallique. La méthode de l'invention permet d'obtenir une polyoléfine à l'aide d'un catalyseur peu coûteux, avec une forte activité par quantité unitaire de catalyseur.

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