Olefin polymerization catalyst

Details Olefin polymerization catalyst Olefin polymerization catalyst

1990-10-18

1992-01-21

Garvin, Patrick P.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502124, 502127, 526351, C08F 4653

Patent

active

050829076

ABSTRACT:
A complex alkoxide compound precursor of an olefin polymerization catalyst component is produced by contacting a magnesium alkoxide, a titanium alkoxide and a borate ester in alkanol solution. Alkanol is removed from the resulting complex alkoxide compound alcoholate and the resulting product is contacted with tetravalent titanium halide, halohydrocarbon and an electron donor. The resulting solid olefin polymerization procatalyst is contacted with organoaluminum cocatalyst and a selectivity control agent. The resulting olefin polymerization catalyst affords polyolefin product in good productivity and with good stereospecificity.

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patent: 4710482 (1987-12-01), Job
patent: 4728705 (1988-03-01), Nestlerode et al.
patent: 4902761 (1990-02-01), Suga et al.
patent: 4935394 (1990-06-01), Chang
patent: 4985515 (1991-01-01), Matsuura et al.

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