Ethylene copolymerisation process

Details Ethylene copolymerisation process Ethylene copolymerisation process

C - Chemistry, Metallurgy

08

F

402/418, 402/581

C08F 2/34 (2006.01) B01J 8/24 (2006.01) C08F 210/02 (2006.01) C08F 210/16 (2006.01)

Patent

CA 1199450

ABSTRACT OF THE DISCLOSURE: Ethylene is copolymerised in the gas phase, for example in a fluidised bed, using a gaseous mixture comprising ethylene, at least one olefine monomer containing at least 4 carbon atoms, an inert gaseous diluent and, optionally, hydrogen at a total absolute pressure of at least one MN/m2. The comonomer preferably contains 6 or 8 carbon atoms. The partial pressure of the comonomer may be in the range from 1 kN/m2 up to 550 kN/m2. The inert gaseous diluent typically has a partial pressure of at least 250 kN/m2 and forms 20% molar of the gaseous mixture. The inert gaseous diluent may be nitrogen and is preferably ethane.

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