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:
Nov. 08, 2016
Filed:
Aug. 09, 2013
Applicants:
Shiguang LI, Mount Prospect, IL (US);
Shaojun Zhou, Palatine, IL (US);
Miao Yu, Pittsford, NY (US);
Inventors:
Assignees:
Gas Technology Institute, Des Plaines, IL (US);
The Regents of the University of Colorado, Denver, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 67/56 (2006.01);
U.S. Cl.
CPC ...
C07C 67/56 (2013.01); C07C 67/56 (2013.01); C07C 69/54 (2013.01);
Abstract
A method for separating the components of a mixture containing methyl methacrylate, water, and methanol in which the mixture is dehydrated in a first stage membrane unit, producing a dehydrated mixture. Methanol in the dehydrated mixture is removed in a second stage membrane unit, producing a retentate stream containing methyl methacrylate and substantially no said methanol.