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

1978-08-23

1980-10-21

Sneed, Helen M. S.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

B01J 3102

Patent

active

042293189

ABSTRACT:
A process for the manufacture of a titanium-containing component of a catalyst for the Ziegler-Natta polymerization of .alpha.-monoolefins, by (a) milling a titanium-containing compound of the general formula TiCl.sub.3.nAlCl.sub.3 (where n is a number from 0.01 to 1) with (b) an ether of a particular type or an ester of a particular type, wherein (1) a vibratory ball mill giving a relatively high milling acceleration is used, (2) the mill is first charged with the titanium-containing compound (a), after which it may or may not be run for a certain period, thereafter (3) while milling, the amount of the ether or ester (b) which corresponds to a particular molar ratio of aluminum in the titanium-containing compound (a) to ether or ester (b) is added continuously or in small portions, then (4) the batch is milled for a certain period, after which (5) the product obtained from stage (4) may or may not be washed with a hydrocarbon and dried, and following which (6) the product obtained from stage (4) or (5) may or may not be milled for a certain period at a low temperature, next (7) the product obtained from stage (4), (5) or (6) is brought together with a liquid silicon compound of a particular type or a liquid tin compound of a particular type (these compounds acting as promoters) and the batch is left for a certain period and is then separated into a solid-phase product and into a liquid-phase product, and thereafter (8) the solid-phase product obtained from stage (7) is washed with a hydrocarbon or with one of the promoters mentioned under (7) and is dried, following which (9) the product obtained from stage (8) may or may not be milled for a certain period at a low temperature.
Using the titanium-containing catalyst components thus obtainable makes it possible to produce polymers, having a high stereoregularity, in high specific yields.

REFERENCES:
patent: 3701763 (1972-10-01), Wada et al.
patent: 3992320 (1976-11-01), Schneider et al.
patent: 4120823 (1978-10-01), Tamm et al.
patent: 4135045 (1979-01-01), Matsuzawa et al.
patent: 4145312 (1979-03-01), Matheson

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