Control of solution catalyst droplets

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 2/34 (2006.01) B01J 8/24 (2006.01) C08F 10/00 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2430851

A process, carried out in the gas phase, comprising contacting one or more olefins with a catalyst system containing a carrier gas and a mixture of solids comprising a transition metal compound or complex and a liquid organic solvent, under polymerization conditions, in a fluidized bed reactor containing resin particles in a fluidized state with the provisos that (a) the mixture of solids and solvent contains at least 95 percent by weight solids and (b) the mixture is sprayed with the carrier gas into a particle-lean zone, or the fluidized bed, of the reactor.

L'invention concerne un procédé, conduit en phase gazeuse, qui consiste à mettre en contact une ou plusieurs oléfines avec un système catalytique renfermant un gaz vecteur et un mélange de matières solides, dans lequel on trouve un composé ou un complexe à base de métal de transition et un solvant organique liquide, en conditions de polymérisation, à l'intérieur d'un réacteur à lit fluidisé qui contient des particules de résine à l'état fluidisé, pour autant (a) que le mélange de matières solides et de solvant renferme au moins 95 %, en poids, de matières solides, et (b) que le mélange soit pulvérisé avec le gaz vecteur dans une zone à faible teneur en particules, ou le lit fluidisé, du réacteur.

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