Polyolefin polymerization process, method of producing catalyst,

Details Polyolefin polymerization process, method of producing catalyst, Polyolefin polymerization process, method of producing catalyst,

1992-08-31

1993-08-10

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526119, 526127, 526128, 526142, 526143, 526151, 526152, 5263484, 526903, 502107, 502119, 502125, 502134, C08F 4642, C08F11014

Patent

active

052350118

ABSTRACT:
A process for preparing a polymerization catalyst useful for the polymerization of olefins is provided comprising contacting a metal dihalide compound wherein the metal is selected from Group 2 and Group 12 of the Periodic Table and a transition metal compound which is a hydrocarbyloxide of a transition metal selected from Group 4 and Group 5 to form a first catalyst component; contacting the first catalyst component with at least one organoaluminum precipitating agent, wherein at least at the commencement of this step, the temperature at which such contacting is carried out is greater than about 70.degree. C. to about 150.degree. C. to form a solid product, and contacting the solid product with an activating agent to form a catalyst. Other aspects of the invention provide a catalyst prepared by the above described method and a polymerization process employing the thus prepared catalyst.

REFERENCES:
patent: 4394291 (1983-07-01), Hawley
patent: 4562168 (1985-12-01), Lee
patent: 5151397 (1992-09-01), Mitchell et al.
Phillips Petroleum Case 33042US, filed Aug. 31, 1992.

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