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:
Sep. 25, 2001
Filed:
Mar. 31, 2000
Mitchell D. Refvik, Bartlesville, OK (US);
James Edward Shaw, Bartlesville, OK (US);
Richmond, Hitchcock, Fish & Dollar, Bartlesville, OK (US);
Abstract
A process useful for producing an organic disulfide is disclosed. The process can include contacting mercaptans with a solid catalyst selected from the group consisting of a Group IIA metal oxide; 2) an alumina material consisting essentially of alumina; 3) an impregnated alumina impregnated with a metal selected from the group consisting of cobalt, molybdenum, tungsten, nickel and combinations of any two or more thereof; 4) an acidic ion-exchange resin; 5) a basic ion-exchange resin; and 6) combinations of any two or more thereof; in the presence of sulfur dioxide and in the substantial absence of a liquid oxidation catalyst to thereby produce organic disulfides. Alternatively, the process can include contacting mercaptans with a solid catalyst selected from the group consisting of 1) a Group IIA metal oxide; 2) alumina; 3) an impregnated alumina impregnated with a metal selected from the group consisting of cobalt, molybdenum, tungsten, nickel and combinations of any two or more thereof; 4) an acidic ion-exchange resin; 5) a basic ion-exchange resin; and 6) combinations of any two or more thereof; in the presence of sulfur dioxide, in the presence of an oxygenated hydrocarbon, and, optionally, in the substantial absence of a liquid oxidation catalyst, to thereby produce organic disulfides.