Catalysts for the polymerization of ethylene

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

1975-03-12

1977-08-16

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252458, 526130, C08F11002

Patent

active

040427692

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: 3239498 (1966-03-01), Witt
patent: 3378540 (1968-04-01), Witt
patent: 3562241 (1971-02-01), Witt
patent: 3671432 (1972-06-01), Peters
patent: 3819598 (1974-06-01), Galiano et al.
patent: 3862104 (1975-01-01), Witt
patent: 3867306 (1975-02-01), Witt
patent: 3890249 (1975-06-01), Dietz

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