Molecular weight distribution modification in a tubular reactor

Details Molecular weight distribution modification in a tubular reactor Molecular weight distribution modification in a tubular reactor

C - Chemistry, Metallurgy

08

F

253/128, 402/615

C08F 10/00 (2006.01) B01J 19/24 (2006.01) C08F 210/16 (2006.01)

Patent

CA 1272846

ABSTRACT OF DISCLOSURE MOLECULAR WEIGHT DISTRIBUTION MODIFICATION IN A TUBULAR REACTOR Polymer having a polymodal MWD ethylene copolymer are prepared by conducting the polymerization in a substantially mix free reactor using an essentially transfer agent free reaction mixture, the reaction being carried out in a manner such that the propagation of es- sentially all copolymer chains is initiated simulta- neously. In carrying out the process of this invention, the catalyst components are premixed and aged prior to introduction into the reactor. The process is pref- erably carried out in a tubular reactor using VCl4 and aluminum sesquichloride as the catalyst system.

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