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:
Feb. 23, 1982
Filed:
Sep. 12, 1980
Martial Atlani, Paris, FR;
Roben Loutaty, Le Havre, FR;
Claude Wakselman, Villebon sur Yvette, FR;
Charles Yacono, Le Havre, FR;
Compagnie Francaise de Raffinage, both of, FR;
Agence Nationale de Valorisation de la Recherche (ANVAR), both of, FR;
Abstract
Dienic and/or aromatic hydrocarbons are separated from hydrocarbon fractions employing known liquid-liquid extraction and/or extractive distillation procedures and at least one sulfonamide solvent conforming to the general formula ##STR1## wherein R', R' and 4'' can be linear or branched, saturated or unsaturated, aliphatic groups possessing from 1 to 18 carbon atoms, wherein two or three of groups R', R' and R'' can be identical, wherein one of the groups R' and R'' can be replaced with a hydrogen atom, and wherein at least one of groups R', R' and R'' is unsaturated.