Supported polyolefin catalyst components and methods of making a

Details Supported polyolefin catalyst components and methods of making a Supported polyolefin catalyst components and methods of making a

1985-10-17

1988-09-27

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526114, 526116, 526119, 526124, 526351, C08F 402, C08F 1006

Patent

active

047743000

ABSTRACT:
A method of producing a polymerization catalyst component suitable for use in the polymerization of alpha-olefins, which method comprises forming an active component by co-comminuting an inorganic Lewis acid, a first organic electron donor, a support base selected from the group consisting of the Group IIA & IIIA salts and the salts of the multivalent metals of the first transition series with the exception of copper, and a polymerization active tri-, tetra-, or penta- valent transition metal compound of a Group IVB-VIB metal, and heating the active component in an inert hydrocarbon solvent to produce the polymerization catalyst component. The active component can be heated in the inert hydrocarbon solvent in the presence of an additional polymerization active tri-, tetra-, or penta- valent transition metal compound of a group IVB-VIB metal. In addition, a second organic electron donor may be incorporated in the active component.

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patent: 4157435 (1979-06-01), Toyota et al.
patent: 4246136 (1981-01-01), Ueno et al.
patent: 4287328 (1981-09-01), Kikuta et al.
patent: 4321345 (1982-03-01), Sato et al.
patent: 4425257 (1984-01-01), Miro et al.

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