Process for the syndiotactic propagation of olefins

Details Process for the syndiotactic propagation of olefins Process for the syndiotactic propagation of olefins

C - Chemistry, Metallurgy

08

F

C08F 4/622 (2006.01) B01J 19/18 (2006.01) B01J 31/14 (2006.01) B01J 31/16 (2006.01) C08F 4/02 (2006.01) C08F 4/52 (2006.01) C08F 10/00 (2006.01) C08F 110/06 (2006.01) C08F 4/619 (2006.01) C08F 4/6192 (2006.01)

Patent

CA 2181413

The invention provides a process for commercial production of syndiotactic polyolefins using a metallocene catalyst supported on silica treated with MAO. The invention includes contacting the supported metallocene catalyst with an aluminum alkyl and aging the catalyst prior to polymerization. In addition, the catalyst is prepolymerized in a tubular reactor prior to being introduced into the polymerization reaction zone.

Méthode pour la production commerciale de polyoléfines syndiotactiques à l'aide d'un métallocène catalytique sur support de silice après traitement avec MAO. Dans l'invention, on met en contact le catalyseur de métallocène sur support avec un alkylaluminium en laissant vieillir le catalyseur avant la polymérisation. De plus, le catalyseur est prépolymérisé dans un réacteur tubulaire avant d'être introduit dans la zone de réaction de la polymérisation.

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