Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Patent
1993-01-21
1996-01-16
Delmendo, Romulo H.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
502104, 502105, 502107, 502110, 502111, 502113, 502115, 502117, 502125, 502134, 502151, 502224, 502226, 526114, 526119, 526125, 5261244, 5261242, C08F 4654
Patent
active
054847540
ABSTRACT:
A process for the polymerization of ethylene or the copolymerization of ethylene with an alpha-olefin, in suspension or in gas phase, in the presence of a catalyst consisting essentially of a cocatalyst and a catalytic component based on at least Mg, Ti and Cl, with the catalytic component being constituted of at least one derivative of magnesium and one chlorinated derivative of titanium in its form III and/or IV, which was subjected, prior to its use, to a reduction treatment and then to treatment with a chlorinated transition metal compound, with the said catalytic component being characterized in that the magnesium derivative is in the form MgCl.sub.2.MgO.
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patent: 4299936 (1981-11-01), Candlin et al.
patent: 4421674 (1983-12-01), Invernizzi et al.
patent: 4537870 (1985-08-01), Hawley
patent: 4562168 (1985-12-01), Lee
patent: 4843049 (1989-06-01), Invernizzi et al.
Boor, Jr, John, Ziegler-Natta Catalysts and Polymerizations, Academic Press, New York, 1979, pp. 602-609.
Malinge Jean
Patin Maryse
Spitz Roger
Delmendo Romulo H.
Elf Atochem S. A.
Sigalos John L.
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