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:
Apr. 21, 2015
Filed:
Dec. 28, 2012
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
David Richard Corbin, West Chester, PA (US);
Paul Joseph Fagan, Wilmington, DE (US);
Stuart B Fergusson, Kingston, CA;
Keith W Hutchenson, Lincoln University, PA (US);
Pranit S Metkar, Wilmington, DE (US);
Ronnie Ozer, Arden, DE (US);
Carmo Joseph Pereira, Silver Spring, MD (US);
Bhuma Rajagopalan, Wilmington, DE (US);
Sourav Kumar Sengupta, Wilmington, DE (US);
Eric J. Till, Newtown Square, PA (US);
E I du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Furfural is produced by contacting a feedstock solution containing Csugar and/or Csugar with a solid acid catalyst using reactive distillation. Both high yield and high conversion are obtained, without production of insoluble char in the reaction vessel. Degradation of furfural is minimized by its low residence time in contact with the solid acid catalyst. Higher catalyst lifetime can be achieved because the catalyst is continually washed with the refluxing aqueous solution and not sitting in high-boiling byproducts like humins, which are known to be deleterious to catalyst lifetime.