Olefin polymerization catalyst

Details Olefin polymerization catalyst Olefin polymerization catalyst

1991-09-13

1992-08-25

Garvin, Patrick P.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502111, 502125, 526119, C08F 4653

Patent

active

051419106

ABSTRACT:
A complex alkoxide compond precursor of an olefin polymerization catalyst component is produced by contacting a magnesium alkoxide, a titanium alkoxide and a borate ester in alkanol solution. Akanol 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: 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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