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. 10, 2016
Filed:
Sep. 21, 2012
Applicant:
Dsm Ip Assets B.v., Heerlen, NL;
Inventor:
Anna Maria Cornelia Francisca Castelijns, Echt, NL;
Assignee:
DSM IP ASSETS B.V., Heerlen, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 67/00 (2006.01); C07C 51/09 (2006.01); C07C 67/36 (2006.01); C07C 67/03 (2006.01);
U.S. Cl.
CPC ...
C07C 67/03 (2013.01);
Abstract
This invention relates to a process for the preparation of alkenoic acid esters comprising contacting a lactone with an alcohol and an acidic catalyst in the gas phase, characterized in that the process is carried out in the presence of at least 0.26 wt. % water, relative to the amount of the lactone. The process may result in a good production yield and selectivity with respect to the production of alkenoic acid esters and may also result in less formation of dialkylethers. The improved yield advantageously allows energy conservation.