Process for producing ethylene copolymer by gaseous phase...

Details Process for producing ethylene copolymer by gaseous phase... Process for producing ethylene copolymer by gaseous phase...

Category

C - Chemistry, Metallurgy

Subcategory

08

Subsubcategory

F

CPC

402/613, 402/626

IPC codes

C08F 2/34 (2006.01) C08F 10/00 (2006.01) C08F 210/16 (2006.01)

Type

Patent

Patent number

CA 1164598

Description

ABSTRACT OF THE DISCLOSURE A process for producing an ethylene copolymer which comprises polymerizing a predominant amount Or ethylene and a minor amount or an alpha-olefln having 4 to 10 carbon atoms in the amount phase in the presence of a catalyst composed Or (A) a transition metal catalyst component and (D) an organo- metallic compound Or a metal Or Croups I to III Or the periodic table; characterized in that the copolymerlzation is carried out under the following conditions (i) and (ii), (i) at least l mole, per mole of ethylene, of a gaseous saturated hydrocarbon having 3to 6 carbon atoms is caused to be present in the gaseous phase copolymerization system, and (ii) the gaseous mixture containing the unreacted olefin which has been discharged from the gaseous phase co- polymerization system is cooled to a temperature at which the mixture is not llqueried, and the cooled gaseous mixture is recycled to the gaseous phase copolymerization system.

Application Number

387875

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