Catalyst component for use in the polymerization of .alpha.-olef

Details Catalyst component for use in the polymerization of .alpha.-olef Catalyst component for use in the polymerization of .alpha.-olef

1979-04-11

1981-01-20

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

526125, 526127, 526142, 526144, 526143, C08F 464

Patent

active

042461367

ABSTRACT:
A supported titanium catalyst is produced by cogrinding, in combination, a magnesium halide, tetravalent titanium halide, organic acid ester, and a halogen compound selected from organic halogen compounds and halogen-containing compounds of Group IVa elements of the Periodic Table except carbon, and then treating the resulting titanium-containing solid with a hydrocarbon and/or a halogen compound as described above. The resulting supported titanium catalyst, when employed as a titanium component with an organo aluminum catalyst component for the catalyst system in a process for stereoregular polymerization of .alpha.-olefins results in unexpectedly high polymerization activity and high stereoregular polymer yielding ratios.

REFERENCES:
patent: 3094568 (1963-06-01), Hay et al.
patent: 4107412 (1978-08-01), Welch
patent: 4107415 (1978-08-01), Giannini et al.
patent: 4146502 (1979-03-01), Yokoyama et al.
patent: 4156063 (1979-05-01), Giannini et al.
patent: 4157435 (1979-06-01), Toyota et al.

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