Copolymerization process of propylene

Details Copolymerization process of propylene Copolymerization process of propylene

C - Chemistry, Metallurgy

08

F

402/622

C08F 210/06 (2006.01) C08F 210/16 (2006.01)

Patent

CA 1259746

ABSTRACT In a copolymerization process of propylene, a mixture of unreacted propylene and ethylene is recovered. It is then fed to a distillation system which includes first and second distillation columns. The distillation system is operated in such a way that the temperature and pressure of the top of the second distillation column remain constant and an ethylene- propylene mixture can be recovered at a constant ethylene/propylene ratio from the top of the second distillation column. By using the thus-recovered ethylene-propylene mixture, the copolymerization reaction can be carried out under excellent control so that the ethylene/propylene copolymer can be obtained with uniform quality and properties.

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