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:
Oct. 21, 2014
Filed:
Jun. 10, 2011
Thomas Peter Anne Goossens, Ostend, BE;
Freek Annie Camiel Vrielynck, Beernem, BE;
Noel Gabriel Cornelius Hosten, Bruges, BE;
Koen Jeanne Alfons Van Aken, Kuume, BE;
Thomas Peter Anne Goossens, Ostend, BE;
Freek Annie Camiel Vrielynck, Beernem, BE;
Noel Gabriel Cornelius Hosten, Bruges, BE;
Koen Jeanne Alfons Van Aken, Kuume, BE;
Ecosynth bvba, Ostend, BE;
Abstract
This invention is directed to a process for the production of a variety of esters, particularly acrylate and methacrylate-based esters, by a transesterification reaction. This objective is achieved by reaction of an ester of a carboxylic or a carbonic acid, in particular of a saturated or unsaturated, typically, a 3 to 4 carbon atom carboxylic acid; with an alcohol in the presence of a catalyst comprising the combination of a metal 1,3-dicarbonyl complex (pref. Zn or Fe acetylacetonate) and a salt, in particular an inorganic salt, pref. ZnCl2, LiCI, NaCI, NH4CI or Lil. These catalysts are prepared from readily available starting materials within the reaction medium without the need for isolation (in-situ preparation).