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. 24, 2017
Filed:
Jul. 24, 2014
Applicant:
Arkema France, Colombes, FR;
Inventors:
Michel Fauconet, Valmont, FR;
Roger L. Roundy, Rosharon, TX (US);
Stephane Denis, Leyviller, FR;
Samuel M. Daniel, Malvern, PA (US);
Assignee:
Arkema France, Colombes, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/08 (2006.01); C07C 67/327 (2006.01); C07C 51/09 (2006.01); C07C 67/54 (2006.01); C07C 67/62 (2006.01);
U.S. Cl.
CPC ...
C07C 67/08 (2013.01); C07C 51/09 (2013.01); C07C 67/327 (2013.01); C07C 67/54 (2013.01); C07C 67/62 (2013.01); Y02P 20/582 (2015.11);
Abstract
The present invention relates to methods by which the thermal dissociation of Michael adducts present in a stream of crude acrylic acid, called 'crude ester grade', and the esterification reaction of acrylic acid present in the stream of crude acrylic acid, or generated in situ by thermal dissociation, with a light alcohol, are carried out simultaneously.