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:
Aug. 01, 2006
Filed:
Aug. 05, 2003
Applicants:
Hari Babu Sunkara, Hockessin, DE (US);
Mayis Seapan, Landenberg, PA (US);
George F. Diffendall, Wilmington, DE (US);
Tyler T. Ames, Wilmington, DE (US);
Inventors:
Hari Babu Sunkara, Hockessin, DE (US);
Mayis Seapan, Landenberg, PA (US);
George F. Diffendall, Wilmington, DE (US);
Tyler T. Ames, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 29/74 (2006.01); C07C 29/88 (2006.01); C07C 29/90 (2006.01); C07C 27/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a process comprising contacting chemical 1,3-propanediol with hydrogen in the presence of a hydrogenation catalyst. Preferably, the chemical 1,3-propanediol, before the contacting has an initial color and, after the contacting, has a color that is lower than the initial color.