Process for producing ethylene polymers

Details Process for producing ethylene polymers Process for producing ethylene polymers

C - Chemistry, Metallurgy

08

F

402/581, 402/612

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

Patent

CA 1162700

ABSTRACT OF THE DISCLOSURE In a process for producing an ethylene polymer by the slurry-type polymerization of ethylene or ethylene and other olefins by using a catalyst system comprising a high-activity supported-type Ziegler catalyst component (hereinafter referred to as solid catalyst component) and an organometallic compound component in the presence of hydrogen as molecular weight regulator in two or more reaction zones connected in series and kept full with the liquid phase to exclude the gas phase, the improvement which comprises using a solid catalyst component of long-lasting high-activity and limiting the average amount of polymer formation in each reaction zone within a specific range. According to the said process, it is possible to vary the average molecular weight, molecular weight distribution, and density of the polymer as desired and to produce economically on a commercial scale a polymer having desirable physical properties and processability.

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