Olefin polymerization catalyst

Details Olefin polymerization catalyst Olefin polymerization catalyst

1990-10-22

1991-12-31

Garvin, Patrick P.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502125, 502127, 526351, C08F 4654

Patent

active

050773577

ABSTRACT:
An improved olefin polymerization process employs an olefin polymerization catalyst produced from a polymerization procatalyst made from a magnesium alkoxide, a titanium tetraalkoxide, a tetravalent titanium halide, a phenolic compound and an alkanol. The procatalyst precursor is contacted with a tetravalent titanium halide and an electron donor to form the procatalyst which is subsequently converted to the olefin polymerization catalyst by contact with a cocatalyst and a selectivity control agent.

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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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