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. 15, 2016
Filed:
Sep. 17, 2015
Novomer, Inc., Ithaca, NY (US);
Scott D. Allen, Ithaca, NY (US);
Ronald R. Valente, Ithaca, NY (US);
Han Lee, Ithaca, NY (US);
Anna E. Cherian, Ithaca, NY (US);
Donald L. Bunning, Charleston, WV (US);
Nye A. Clinton, Hurricane, WV (US);
Olan Stanley Fruchey, Hurricane, WV (US);
Bernard Duane Dombek, Charleston, WV (US);
NOVOMER, INC., Ithaca, NY (US);
Abstract
The present application provides a method for producing an beta-lactone product. The method includes the steps of: reacting an epoxide, a solvent with a carbonylation catalyst and carbon monoxide to produce a reaction stream comprising a beta-lactone then separating a portion of the beta-lactone in the reaction stream from the solvent and carbonylation catalyst to produce: i) a beta-lactone stream with the beta-lactone, and ii) a catalyst recycling stream including the carbonylation catalyst and the high boiling solvent; and adding the catalyst recycling stream to the feed stream.