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:
Oct. 13, 2015
Filed:
Aug. 25, 2011
Scott D. Allen, Ithaca, NY (US);
Bernard Duane Dombek, Charleston, WV (US);
Olan Stanley Fruchey, Hurricane, WV (US);
Nye A. Clinton, Hurricane, WV (US);
Scott D. Allen, Ithaca, NY (US);
Bernard Duane Dombek, Charleston, WV (US);
Olan Stanley Fruchey, Hurricane, WV (US);
Nye A. Clinton, Hurricane, WV (US);
NOVOMER, INC., Ithaca, NY (US);
Abstract
Continuous flow systems and methods produce succinic anhydride by a double carbonylation of ethylene oxide with carbon monoxide and at least one catalyst. In some embodiments, the double carbonylation occurs using a single catalyst. In other embodiments, a first catalyst is used to promote the first carbonylation, and a second catalyst different from the first catalyst is used to promote the second carbonylation. The succinic anhydride is isolated from the product stream by crystallization and the catalyst is recycled to the reaction stream.