Manufacture of catalysts for polymerization of olefins

Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants

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526142, C08F 464

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active

041102487

ABSTRACT:
A catalyst for use in the polymerization of olefins and a process for its manufacture wherein an excess titanium tetrachloride is reduced by an organoaluminum reducing agent, with the ratio of moles of titanium tetrachloride to the number of gram equivalents of the organoaluminum compound being at least 1.8. The catalyst is prepared in the presence of an aliphatic ether to produce titanium trichloride having regularly-shaped granules and improved catalytic properties suitable for use with an organoaluminum co-catalyst in the polymerization of olefins.

REFERENCES:
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patent: 3129256 (1964-04-01), Hay et al.
patent: 3652705 (1972-03-01), Arakawa et al.
patent: 3758621 (1973-09-01), Morikawa et al.
patent: 3784481 (1974-01-01), Lassau et al.
patent: 3813374 (1974-05-01), Perry
patent: 3864278 (1975-02-01), La Heij et al.

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