Process for polymerizing ethylene

Details Process for polymerizing ethylene Process for polymerizing ethylene

1987-09-28

1988-08-09

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502121, 502125, 502126, 5263485, 526902, C08F 202, C08F 1002

Patent

active

047628987

ABSTRACT:
A process for polymerizing or copolymerizing ethylene comprises contacting ethylene or ethylene and at least one of .alpha.-olefins with a catalyst consisting essentially of a combination of (A) a solid catalyst component containing at least titanium, magnesium and chlorine, (B) an organoaluminum compound, and (C) an organic compound selected from the group consisting of a compound having P-O-C bond, a compound having B-O-C bond and a compound having C-O-R bond, at a temperature not lower than 125.degree. C. and under a pressure not lower than 200 kg/cm.sup.2.

REFERENCES:
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patent: 4237254 (1980-12-01), Kitagawa et al.
patent: 4402863 (1983-09-01), Miyazaki et al.
patent: 4405774 (1983-09-01), Miwa et al.
patent: 4581426 (1986-04-01), Asanuma et al.
patent: 4701505 (1987-10-01), Fujii et al.
Kinetics of Ethylene Polymerization at High Temperature with Ziegler-Natta Catalysts, Y. V. Kissin et al, J. Polymer Science 29, 1171-1182 (1984).

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