Solid catalyst components for polymerization of .alpha.-olefins

Details Solid catalyst components for polymerization of .alpha.-olefins Solid catalyst components for polymerization of .alpha.-olefins

1979-03-28

1980-12-30

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

526125, 526141, 526142, 526143, C08F 464

Patent

active

042422299

ABSTRACT:
A solid catalyst component for forming, in combination with an organoaluminium compound, a catalyst for polymerization of .alpha.-olefins is provided, whereby .alpha.-olefin polymers having high stereoregularity or stereospecificity are produced in a high yield. The catalyst component is a product of contact of materials consisting essentially of a halogen-containing magnesium compound, a nucleus-substituted or unsubstituted benzoate ester and a titanium compound, and satisfies the conditions that the solid catalyst component contains 0.5 to 3.5% by weight of titanium atoms, and the highest absorption peak in the infrared absorption spectrum of the catalyst component among the absorption peaks appearing in the wave-number range of 1560 cm.sup.-1 to 1710 cm.sup.-1 appears in the wave-number region of 1665 cm.sup.-1 to 1710 cm.sup.-1.

REFERENCES:
patent: 4069169 (1978-01-01), Toyoda et al.
patent: 4149990 (1979-04-01), Giannini et al.
patent: 4156063 (1979-05-01), Giannini et al.

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