The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 1991
Filed:
Feb. 12, 1990
Applicant:
Inventor:
Martin E Nash, Borger, TX (US);
Assignee:
Phillips Petroleum Company, Bartlesville, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549 87 ;
Abstract
A process for converting a sulfolene feed, containing contaminating amounts of sulfur dioxide, to a sulfolane product in which the sulfolene feed is dissolved in a solvent selected from the group consisting of alcohols and ketones having at least six carbon atoms per molecule, slight solubility in water and a boiling point significantly above 100.degree. C., the thus formed sulfolene solution is distilled to reduce the sulfur dioxide content, the sulfolene solution and hydrogen are contacted with a hydrogenation catalyst to convert the sulfolene feed to a sulfolane product and the sulfolane product is recovered from the effluent of the contacting step.