Process for reducing polymer build-up in heat exchangers during polymerization of alpha-olefins
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsWeldon C. Cummings, Reginald W. Geck, Fathi D. Hussein
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Abstract
A method for inhibiting polymer build-up in a heat exchanger during the gas phase polymerization of alpha-olefins which comprises introducing upstream of the heat exchanger para ethyl ethoxybenzoate in an amount sufficient to inhibit polymer build-up.
Claims10
A method for inhibiting polymer build-up in a heat exchanger during the gas phase polymerization of alpha-olefins which comprises introducing to the recycle line downstream of the reactor and upstream of the heat exchanger para ethyl ethoxybenzoate in an amount sufficient to inhibit polymer build-up.
A method for inhibiting polymer build-up in a heat exchanger during the gas phase polmerization of alpha-olephins to form polypropylene impact copolymers which comprises introducing to the recycle line downstream of the reactor and upstream of said heat exchanger para ethyl ethoxybenzoate in an amount of about 5 to about 20 pounds of said ethyl ethoxybenzoate per million pounds of said polypropylene impact copolymers.
Dependencies are inferred from the claim text.