Polymerization catalyst and method

Details Polymerization catalyst and method Polymerization catalyst and method

1981-04-13

1982-11-16

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252429C, 526129, 526137, 526142, 526156, C08F 464, C08F 468

Patent

active

043594034

ABSTRACT:
An olefin polymerization and copolymerization catalyst active in the presence of an alkyl aluminum cocatalyst is prepared by mixing, in the presence of a solvent, particles of a silica or alumina material having reactive surface groups treated with a fluorine compound and with a compound of magnesiumhydrocarbyl or a complex of the general formula (MgR.sub.2).sub.m (AlR.sub.3 ').sub.n where R and R' are alkyl or aryl groups and m
is between about 0.5 and 10, inclusive, to form a hydrocarbon insoluble reaction product which is then mixed, in the presence of a solvent, with a titanium, vanadium or zirconium halide, oxyhalide or alkoxyhalide, followed by separation of the solvent. The disclosure also includes a method of making such catalysts and a method of making polymers of one or more 1-olefins by the use of these catalysts under polymerizing conditions.

REFERENCES:
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patent: 3936431 (1976-02-01), Reginato et al.
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patent: 4144390 (1979-03-01), Derroitte et al.
patent: 4148754 (1979-04-01), Strobel et al.
patent: 4263171 (1981-04-01), Shida et al.
Ziegler et al., "Organometallic Compounds XXII: Organomagnesium-Aluminum Complex Compounds", Annalen der Chemie, vol. 605, pp. 93-97, (1957).

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