Polymerization catalyst

Details Polymerization catalyst Polymerization catalyst

1979-08-01

1981-04-21

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252429B, 526129, 526156, 526151, C08F 402, C08F 464, C08F 468

Patent

active

042631718

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 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 a titanium, vanadium or zirconium halide, oxyhalide or alkoxyhalide, followed by evaporation of the solvent.

REFERENCES:
patent: 3094568 (1963-06-01), Hay et al.
patent: 3787384 (1974-01-01), Stevens et al.
patent: 3962204 (1976-06-01), Matsuura et al.
patent: 4004071 (1977-01-01), Aishima et al.
patent: 4063009 (1977-12-01), Ziegler et al.
patent: 4081589 (1978-03-01), Peters et al.
patent: 4097409 (1978-06-01), Speakman
patent: 4097659 (1978-06-01), Creemers et al.
patent: 4113933 (1978-09-01), Schweier et al.
patent: 4173547 (1979-11-01), Graff
Ziegler et al., Ann. der Chemie, vol. 605 (1957), pp. 93-97.

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