A process for polymerizing olefins

Details A process for polymerizing olefins A process for polymerizing olefins

C - Chemistry, Metallurgy

08

F

C08F 4/60 (2006.01) C07F 7/08 (2006.01) C08F 4/603 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2277909

The invention relates to a process for the polymerization of olefins by contacting olefins with a transition-metal catalyst and a co-catalyst, characterized in that the co-catalyst is a compound having the formula XR4, where X represents Si or Ge and R represents an alkyl, aryl, arylalkyl or alkylaryl group or the co-catalyst is a compound having the formula [XR5]- [Y]+, where X represents Si, Ge, Sn or Pb, R represents hydrogen or an alkyl, aryl, arylalkyl or alkylaryl group and Y represents a cation.

Procédé pour polymériser les oléfines, selon lequel on met des oléfines en contact avec un catalyseur contenant un métal de transition et avec un cocatalyseur. Le procédé est caractérisé par le fait que le cocatalyseur est un composé de formule XR¿4?, dans laquelle X représente Si ou Ge, et R représente un groupe alkyle, aryle, arylalkyle ou alkylaryle; ou bien le cocatalyseur est un composé de formule [XR¿5?]?-¿[Y]?+¿, dans laquelle X représente Si, Ge, Sn ou Pb, R représente hydrogène ou un groupe alkyle, aryle, arylalkyle ou alkylaryle, et Y représente un cation.

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