Supported chromium oxide polymerization catalyst

Details Supported chromium oxide polymerization catalyst Supported chromium oxide polymerization catalyst

1981-07-31

1983-05-24

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252452, 252471, B01J 2106, B01J 2326, B01J 2334

Patent

active

043849873

ABSTRACT:
A polymerization catalyst is prepared by a process which includes the step of treating silica-supported chromium oxide with a permanganate compound such as potassium permanganate. The catalyst is then activated such as by sequential heating in a reducing atmosphere and an oxidizing atmosphere. The catalyst can be used in particle-form polymerization to produce ethylene polymers having lowered shear response for a given melt index.

REFERENCES:
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patent: 2843552 (1958-07-01), Lechthaler et al.
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patent: 3057915 (1962-10-01), Riemenschneider et al.
patent: 3166537 (1965-01-01), Gregg et al.
patent: 3182048 (1965-05-01), Mills
patent: 3887494 (1975-06-01), Dietz
patent: 3970613 (1976-07-01), Goldie et al.
patent: 4151122 (1979-04-01), McDaniel et al.
patent: 4182815 (1980-01-01), McDaniel et al.
patent: 4256545 (1981-03-01), Deborski

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