Metallocenes and processes therefor and therewith

C - Chemistry – Metallurgy – 07 – F

Patent

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Details

C07F 7/00 (2006.01) B01J 31/16 (2006.01) B01J 31/22 (2006.01) C07C 13/567 (2006.01) C07F 17/00 (2006.01) C08F 4/52 (2006.01) C08F 4/74 (2006.01) C08F 10/00 (2006.01) C08F 4/619 (2006.01) C08F 4/6192 (2006.01)

Patent

CA 2124731

A method is provided for forming a supported cyclopentadiene-type compound comprising contacting a cyclopentadiene-type compound containing an active halogen with an inorganic support having surface hydroxyl group. Also there is provided a method of preparing a supported metallocene comprising reacting the supported cyclopentadiene-type compound with a transition metal compound under suitable conditions. There is also provided a process for producing bridged cyclopentadiene-type ligands having a bridge having branch that has a terminal vinyl group. Also metallocenes of these ligands are provided. Still further there is provided a process for producing bridged cyclopentadiene-type ligands having a bridge having a branch that has a terminal active halogen. The resulting new ligands and supported metallocenes produced therefrom are also provided. There is further provided supported metallocene catalysts wherein at least two metallocenes of differing effectiveness are both bonded to an inorganic support having surface hydroxy groups. Olefin polymerization employing the inventive bridged supported metallocenes is also provided, as well the resulting polymer products.

Méthode pour l'obtention d'un composé sur support de type cyclopentadiène, consistant à mettre en contact un cyclopentadiène renfermant un halogène actif avec un support minéral possédant un groupe hydroxyle en surface. Méthode pour préparer un métallocène sur support, consistant à faire réagir le cyclopentadiène avec un métal de transition dans des conditions appropriées. Méthode pour l'obtention de ligands pontés de type cyclopentadiène, le pont comportant une ramification avec un groupe vinyle terminal. Métallocènes de ces ligands et méthode pour l'obtention de ligands pontés de type cyclopentadiène, le pont comportant une ramification avec un halogène terminal actif. Nouveaux ligands obtenus et métallocènes sur support préparés à partir de ceux-ci. Catalyseurs à base de métallocènes sur support, où au moins deux métallocènes différents du point de vue efficacité sont liés à un support minéral portant des groupes hydroxy en surface. Polymérisation d'oléfines utilisant les métallocènes sur support pontés de l'invention, et polymères ainsi obtenus.

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