Inclusion of oxygen in the polymerization of olefins
AssigneeNational Petro Chemicals Corporation
InventorsHarry W. Mayhew, Richard J. French, Louis J. Rekers
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Abstract
Process for the polymerization of olefins comprising contacting an olefin, admixed with an oxygen-containing gas, with a supported organophosphoryl-chromium oxide catalyst.
Claims33
A process for the polymerization of olefins said process comprising contacting an olefin admixed with an oxygen-containing gas with a catalyst prepared by depositing on a solid inorganic support material the reaction product of chromium trioxide and an organophosphorus compound having the formula:
- ##STR3## wherein R is alkyl, aralkyl, aryl, cycloalkyl, or hydrogen with the proviso that at least one R group is other than hydrogen and heat-activating the resultant catalyst and wherein the oxygen-containing gas is present in amounts of from about 0.1 to about 10 ppm based on total feed to the reactor.
A process for the polymerization of olefins said process comprising contacting an olefin admixed with an oxygen-containing gas with a catalyst prepared by depositing on a solid inorganic support material the reaction product of chromium trioxide and an organophosphorus compound having the formula:
- ##STR4## wherein R is alkyl, aralkyl, aryl, cycloalkyl, or hydrogen with the proviso that at least one R group is other than hydrogen and heat-activating the resultant catalyst and wherein the reaction is conducted at a pressure in the range of up to about 1000 psig.
Dependencies are inferred from the claim text.