Catalysts for the polymerization of ethylene

Details Catalysts for the polymerization of ethylene Catalysts for the polymerization of ethylene

1975-09-02

1977-10-11

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252458, B01J 2108, B01J 2900

Patent

active

040534359

ABSTRACT:
A process is disclosed for the preparation of a polymerization catalyst useful for the polymerization of ethylene. The catalyst consists of a chromium catalyst supported on a silica aerogel having a surface area of at least 300 square meters per gram and a pore volume of at least 2 milliliters per gram, said values being determined by isothermal liquid nitrogen desorption. The silica aerogel is prepared by a modification of the method disclosed by Kistler in U.S. Pat. No. 2,249,767.

REFERENCES:
patent: 3324095 (1967-06-01), Carrick et al.
patent: 3900457 (1975-08-01), Witt

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