Polymerization process using a mixed catalyst system

Details Polymerization process using a mixed catalyst system Polymerization process using a mixed catalyst system

C - Chemistry, Metallurgy

08

F

C08F 4/646 (2006.01) C08F 4/02 (2006.01) C08F 4/22 (2006.01) C08F 10/02 (2006.01)

Patent

CA 2605044

Polyethylene is made by polymerizing ethylene in a gas-phase reactor using a mixed catalyst system comprising a chromium catalyst supported on silica and a transition metal catalyst, having at least one phosphinimide or ketimide ligand, separately supported on silica. The catalyst components can be premixed before being added to a polymerization reactor or they can be added to a reactor separately.

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