Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1977-02-01
1978-08-29
Garvin, Patrick P.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
526142, C08F 464
Patent
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:
patent: 3116274 (1963-12-01), Boehm et al.
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.
Bailly Jean C.
Sandis Stylianos
Garvin Patrick P.
Naphtachimie Societe Anonyme
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