Process for polymerizing ethylene at high temperature under high

Details Process for polymerizing ethylene at high temperature under high Process for polymerizing ethylene at high temperature under high

1995-08-22

1996-04-16

Zitomer, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526148, 526153, 526161, 526348, 5263483, 5263486, 526351, 526352, C08F 464

Patent

active

055083641

ABSTRACT:
A process for polymerizing ethylene at a high temperature under high pressure, which comprises contacting ethylene alone or along with an .alpha.-olefin at a temperature of 120.degree. C. or more at a pressure of 350 kg/cm.sup.2 or more with a catalyst consisting essentially of (A) a reaction product of (A1) a titanium compound having at least one titanium-nitrogen bond with (A2) an organometallic compound of an element of Groups I to III of the Periodic Table and (B) an organoaluminum compound. Said process enables the production of an ethylene polymer or copolymer having a narrow composition distribution and a high molecular weight and being excellent in weather resistance, color development, transparency, corrosiveness and mechanical properties.

REFERENCES:
patent: 4042610 (1977-08-01), Manzer
patent: 4892914 (1990-01-01), Hefner
patent: 5039766 (1991-08-01), Sasari
patent: 5134104 (1992-07-01), Sasaski
patent: 5258476 (1993-11-01), Sasaski
Patent Abstracts of Japan, vol. 7, No. 91 (C-162), 15 Apr. 1983, & JP-A-58 021 407 (Sumitomo Chemical Co., Ltd.), 8 Feb. 1983.

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