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US 4,543,437 AGranted
Refining of tertiary butylstyrene
AssigneeEl Paso Products Company
InventorsJames D. Henery, Stephen C. McHaney, Charles L. Edwards
Life of this patent
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Abstract
Dialkenylbenzene compounds, present in t-butylstyrene in small quantities as impurities are removed by liquid/liquid extraction using aqueous sulfolane as solvent.
Claims5
A process for the removal of dialkenylbenzene contaminants from a t-butylstyrene stream comprising:
- introducing said stream as feed to a liquid/liquid extraction zone;
- intimately contacting said feed in said zone with aqueous sulfolane solvent containing from about 3 to about 30 wt. % water;
- recovering refined t-butylstyrene depleted in dialkenylbenzene contaminants as raffinate;
- and recovering an extract enriched in dialkenyl benzene contaminants.
1 more element
Dependencies are inferred from the claim text.