Manufacture of a titanium-containing component for catalysts of

Details Manufacture of a titanium-containing component for catalysts of Manufacture of a titanium-containing component for catalysts of

1977-11-30

1979-05-15

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252429A, 526142, 526159, C08F 464

Patent

active

041546997

ABSTRACT:
A process for the manufacture of a titanium-containing component of a catalyst for the polymerization of monoolefins by the Ziegler-Natta method by milling (a) a particular titanium-containing compound, viz. a titanium trichloride/aluminum trichloride complex and (b) a particular ester with one another, in which process (1) a vibratory ball mill producing a particular milling acceleration is used, (2) the mill is first charged with the titanium-containing compound (a) and may or may not then be run for some time in the absence of diluents, (3) while milling, the ester (b) is added at a particular rate, continuously or in small portions, and in the absence of diluents, thereafter (4) the grist is brought to an elevated temperature, while milling, and is kept at this temperature until from 5 to 85% of the aluminum trichloride originally present in a bonded form in the titanium-containing compound (a) have been eliminated from the said compound (a), after which (5) if appropriate, the product obtained in accordance with (4) is washed with a hydrocarbon and dried, and then (6) the product obtained in accordance with (4) or in accordance with (5) is milled for a certain length of time at a low temperature in the absence of a diluent. Polyolefins of high stereoregularity can be obtained in a high specific yield by means of the catalyst component manufactured according to the invention.

REFERENCES:
patent: 3032510 (1962-05-01), Tornquist et al.
patent: 3280093 (1966-10-01), Coover et al.
patent: 3492281 (1970-01-01), Smith et al.
patent: 3850899 (1974-11-01), Wada et al.
patent: 4064069 (1977-12-01), Veno et al.

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