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. 10, 2015
Filed:
Dec. 28, 2012
Applicant:
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Inventors:
Keith W Hutchenson, Lincoln University, PA (US);
Michael Stephen McKinnon, Kingston, CA;
Bhuma Rajagopalan, Wilmington, DE (US);
Assignee:
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 311/92 (2006.01); C07D 307/50 (2006.01);
U.S. Cl.
CPC ...
C07D 307/50 (2013.01);
Abstract
Processes for making furfural and 5-hydroxymethylfurfural from sugars are provided. The processes can be carried out using a batch process or a continuous mode of operation. An aqueous sugar solution is pressurized with CO, thereby producing carbonic acid in situ that catalyzes the dehydration reaction to produce furfural from Csugars and 5-methylhydroxyfurfural from Csugars.