Chromium-containing catalyst systems and their use for the polym

Details Chromium-containing catalyst systems and their use for the polym Chromium-containing catalyst systems and their use for the polym

1975-07-09

1977-03-22

Holler, Alan

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252430, 526105, 526156, C08F 422, C08F 462, C08F 1000

Patent

active

040138224

ABSTRACT:
An olefin polymerization catalyst comprising a chromium compound deposited on a carrier, which chromium compound is complexed with a straight-chain, branched-chain, or cyclic aliphatic hydrocarbon or mixture thereof such that the mol ratio of aliphatic hydrocarbon to chromium compound is 1:2-3, said chromium compound being deposited on said carrier material in an amount between 10.sup..sup.-3 and 10 millimols chromium compound per gram of carrier material, said carrier material also containing a trialkyl, tricycloalkyl, triaryl, monohalodihydrocarbyl, or monoalkoxydihydrocarbyl aluminum compound; a process for preparing such an olefin polymerization catalyst and the use of such catalyst in the polymerization of olefins, particularly ethylene, propylene, 2-methylpropylene and butene-1.

REFERENCES:
patent: 3666743 (1972-05-01), Bower et al.
patent: 3756998 (1973-09-01), Karapinka
patent: 3757002 (1973-09-01), Karol
patent: 3794628 (1974-02-01), Bower
patent: 3875132 (1975-04-01), Kruse

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