Olefin-polymerization catalysts

Details Olefin-polymerization catalysts Olefin-polymerization catalysts

1976-02-13

1978-01-03

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252429B, 526142, 526143, C08F 462

Patent

active

040665712

ABSTRACT:
Olefin-polymerization catalysts having a catalytic activity much higher than related Ziegler catalysts are prepared by treating a compound of a transition element such as chromium, with at least one reagent selected from acetic acid, acetic anhydride and a chloroacetic or fluoroacetic acid, at 70.degree. to 100.degree. C for 10 to 30 hours, and treating the product, dispersed in an inert anhydrous non-polar solvent, with at least one aluminum alkyl.

REFERENCES:
patent: 3082198 (1963-03-01), Klein
patent: 3381047 (1968-04-01), Eleuterio et al.
patent: 3647908 (1972-03-01), Medema et al.
patent: 3784481 (1974-01-01), Lassau et al.
patent: 3928303 (1975-12-01), Yasui et al.

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