Polymerization catalyst and method

Details Polymerization catalyst and method Polymerization catalyst and method

1981-05-05

1983-09-06

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

526129, 526142, C08F 464

Patent

active

044028610

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, and a magnesium alkyl or a magnesium alkyl-aluminum alkyl complex of the general formula (MgR.sub.2).sub.m (AlR.sub.3 ').sub.n where R and R' are alkyl 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 an electron-donating alcohol and a titanium, vanadium or zirconium halide, oxyhalide or alkoxyhalide, followed by removal, such as by evaporation, of the solvent to give a dry, granular, solid catalyst.

REFERENCES:
patent: 3647772 (1972-03-01), Kashina
patent: 3738944 (1973-06-01), Candlin et al.
patent: 3775391 (1973-11-01), Jennings et al.
patent: 3925338 (1975-12-01), Ort
patent: 4105585 (1978-08-01), Matheson
patent: 4110523 (1978-08-01), Schweier et al.
patent: 4120820 (1978-10-01), Birkelbach
patent: 4130699 (1978-12-01), Hoff et al.
patent: 4199473 (1980-04-01), Timms
patent: 4244838 (1981-01-01), Gessell

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