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:
May. 04, 2010
Filed:
Jun. 09, 2009
Applicants:
Charles D. Gartner, Midland, MI (US);
Timothy D. Ligon, St. Albans, WV (US);
Inventors:
Charles D. Gartner, Midland, MI (US);
Timothy D. Ligon, St. Albans, WV (US);
Assignee:
Dow Global Technologies Inc., Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 45/42 (2006.01); C07C 47/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a process for the preparation of glutaraldehyde. The process comprises reacting an alkoxydihydropyran with water in the presence of an acidic catalyst. The alcohol by-product distilled from the reaction mixture is subjected to a heterogeneous catalyst that is located external to the distillation column used for distilling the alcohol, thereby increasing glutaraldehyde yield and decreasing the level of alkoxydihydropyran contamination in the alcohol.