Polymerisation process

C - Chemistry – Metallurgy – 08 – F

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C08F 10/00 (2006.01) B01J 8/24 (2006.01) C08F 2/40 (2006.01)

Patent

CA 2332002

A process for the gas phase polymerisation of one or more alpha-olefins in the presence of a polymerisation catalyst system under reactive conditions in a fluidised bed reactor which process comprises introducing into the reactor a deactivating agent characterised in that the deactivating agent is introduced close to the reactor wall and that said introduction does not terminate the polymerisation reaction.

L'invention concerne un procédé qui permet de polymériser en phase gazeuse une ou plusieurs .alpha.-oléfines dans un réacteur à lit fluidisé en présence d'un système catalyseur de polymérisation, dans des conditions réactives. Le procédé, qui consiste à introduire dans le réacteur un agent de désactivation, est caractérisé par le fait qu'on introduit l'agent de désactivation près de la paroi du réacteur et que ladite introduction n'arrête pas la réaction de polymérisation.

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