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. 12, 1994
Filed:
Jan. 29, 1993
Michael A Pacheco, Naperville, IL (US);
Franklin D Darrington, Munster, IN (US);
Amoco Corporation, Chicago, IL (US);
Abstract
A process is provided for separating alkyl carbonate from a feedstock comprising at least one alkyl carbonate and at least 0.01 percent by weight water comprising extracting the alkyl carbonate from the feedstock in a liquid-liquid extraction step comprising an extraction solvent selective for extracting alkyl carbonates relative to water in an amount sufficient to extract a substantial amount of the alkyl carbonates from the feedstock. The extraction solvent substantially comprises hydrocarbon boiling at a temperature ranging from about 50.degree. F. to about 700.degree. F. at atmospheric pressure and having a specific gravity ranging from about 0.50 to about 1.00.