Manufacture of high pressure polyethylene

Details Manufacture of high pressure polyethylene Manufacture of high pressure polyethylene

C - Chemistry, Metallurgy

08

F

402/487, 402/504

C08F 10/00 (2006.01) C08F 2/02 (2006.01) C08F 10/02 (2006.01)

Patent

CA 1068448

ABSTRACT OF THE DISCLOSURE: A process for the high pressure polymeri- zation of ethylene at elevated temperatures in a polymerization zone followed by transfer of the reaction mixture, through a cooling zone, into the separation zone. In this process, the pressure at the cooling zone outlet is perodically reduced briefly, at recurring intervals, these brief pressure reductions being independent of the pressure reductions in the polymerization zone. Using this process, the con- version in the polymerization unit can be increased and a more homo- geneous ethylene polymer can be obtained.

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