Chemically-modified supports and supported catalyst systems...

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 210/16 (2006.01) B01J 31/02 (2006.01) C07F 17/00 (2006.01) C08F 10/00 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 2396878

The present invention provides a chemically-modified support comprising an inorganic oxide containing optionally functionalized hydroxyl groups, having chemically linked thereto the cation of a cation/anion pair. The present invention further provides a supported catalyst system comprising the chemically-modified support as described above, and a transition metal compound of Groups 3-10 (preferably a Group 4 metal compound) containing at least one .pi.-bonded anionic ligand group, said transition metal compound being capable of reacting with the chemically-modified support through the cation of the cation/anion pair to thereby render the transition metal compound catalytically active. The present invention further provides a process for preparing the chemically-modified support of the invention. The present invention further provides an addition polymerization process comprising contacting one or more addition polymerizable monomers with the supported catalyst system of the invention under addition polymerization conditions.

La présente invention concerne un support chimiquement modifié comprenant un oxyde minéral contenant éventuellement des groupes hydroxyl fonctionnalisés, auquel est chimiquement lié le cation d'une paire cation/anion. Cette invention concerne également un système de catalyseur supporté comprenant le support chimiquement modifié tel que décrit ci-dessus, et un composé à métal de transition faisant partie des groupes 3-10 (de préférence un composé à métal de transition du groupe 4) contenant au moins un groupe ligand anionique à liaison .pi., ledit composé à métal de transition étant capable de réagir avec le support chimiquement modifié par l'intermédiaire du cation de la paire cation/anion pour rendre de ce fait le composé à métal de transition actif du point de vue catalytique. Cette invention concerne également un procédé de préparation du support chimiquement modifié de l'invention, ainsi qu'un procédé de polymérisation par addition comprenant la mise en contact d'un ou de plusieurs monomères d'addition polymérisables avec le système de catalyseur supporté de l'invention dans des conditions de polymérisation par addition.

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