Olefin polymerization catalyst

Details Olefin polymerization catalyst Olefin polymerization catalyst

1992-06-29

1993-02-09

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526124, 526142, 526351, 502124, C08F 444

Patent

active

051854104

ABSTRACT:
An improved high activity olefin polymerization catalyst catalyzes the production of polymeric lower .alpha.-olefin having good properties and a relatively narrow particle size distribution. The catalyst is produced from an organoaluminum cocatalyst, a selectivity control agent and a novel olefin polymerization procatalyst which is prepared by contacting a tetravalent titanium halide, a halohydrocarbon, an electron donor and the solid procatalyst precursor obtained by heating an adduct of a carbonated magnesium ethoxide and a phenolic compound of enhanced acidity.

REFERENCES:
patent: 4525558 (1985-01-01), Takitani et al.
patent: 4728705 (1988-03-01), Nestlerode et al.

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