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. 19, 2020
Filed:
Jun. 05, 2017
Applicant:
Novamont S.p.a., Novara, IT;
Inventors:
Luigi Capuzzi, Novara, IT;
Francesca Digioia, Barengo, IT;
Assignee:
NOVAMONT S.P.A., Novara, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/44 (2006.01); C07C 67/31 (2006.01); C07C 67/333 (2006.01); C07C 51/09 (2006.01); C07C 51/43 (2006.01); C07C 67/05 (2006.01); C11C 1/04 (2006.01); C07C 55/18 (2006.01); C07C 69/48 (2006.01); C07C 69/675 (2006.01);
U.S. Cl.
CPC ...
C07C 51/44 (2013.01); C07C 51/09 (2013.01); C07C 51/43 (2013.01); C07C 67/05 (2013.01); C07C 67/31 (2013.01); C07C 67/333 (2013.01); C07C 55/18 (2013.01); C07C 69/48 (2013.01); C07C 69/675 (2013.01); C11C 1/04 (2013.01);
Abstract
This invention relates to a process for the purification of dicarboxylic acids obtained from the hydrolysis of carboxylic acid triglycerides having more than one acid functional group. The process comprises in particular the separation of at least some of the glycerine from the hydrolysis product in an aqueous phase, evaporating and/or distilling the resultant organic phase and recovering at least some of the evaporated and/or distilled dicarboxylic acids through at least one crystallisation operation.