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:
Mar. 03, 2009
Filed:
Nov. 07, 2007
Applicants:
Andrew James Vetter, Kingsport, TN (US);
Mesfin Ejerssa Janka, Kingsport, TN (US);
Joseph Robert Zoeller, Kingsport, TN (US);
Inventors:
Andrew James Vetter, Kingsport, TN (US);
Mesfin Ejerssa Janka, Kingsport, TN (US);
Joseph Robert Zoeller, Kingsport, TN (US);
Assignee:
Eastman Chemical Company, Kingsport, TN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C 45/72 (2006.01);
U.S. Cl.
CPC ...
Abstract
Glycoaldehyde (GA) is prepared via self condensation of formaldehyde in the presence of a n-heterocyclic carbene to generate GA and glyceraldehyde (GlyAld) with selectivity toward forming the GA. The carbene is generated in situ by the addition of a base to the salt form of the catalyst. Selectivity is controlled by tuning the active site of the catalyst, either sterically and/or electronically.