Process for producing ethylene copolymers

Details Process for producing ethylene copolymers Process for producing ethylene copolymers

C - Chemistry, Metallurgy

08

F

402/638, 402/645

C08F 210/02 (2006.01) C08F 4/62 (2006.01) C08F 210/16 (2006.01)

Patent

CA 1114098

ABSTRACT OF THE DISCLOSURE A process for producing ethylene copolymers having a density of 0.900 - 0.940 by copolymerizing ethylene with other unsaturated hydrocarbon monomer in the presence of a catalyst comprising a titanium and/or vanadium compound and an organo aluminum compound, which comprises using a titanium and/or vanadium compound supported on a magnesium compound as a catalyst component and carrying out the copolymerization reaction in a liquid phase of said unsaturated hydrocarbon monomer. The polymer produced according to this process has a variety of advantages over conventional high- pressure low-density polyethylenes in that it has a higher strength, a higher stiffness, a higher softening point, a higher cold resistance (particularly low- temperature impact resistance), a higher melt extensi- bility, a higher stress cracking resistance, etc., so that it can be put to use not only in the application fields of conventional high-pressure low-density polyethylenes but also in a wide variety of novel application fields.

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