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:
Jun. 08, 2021
Filed:
Jun. 05, 2017
Applicant:
Novamont S.p.a., Novara, IT;
Inventor:
Francesca Digioia, Barengo, IT;
Assignee:
NOVAMONT S.P.A., Novara, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/09 (2006.01); C07C 55/02 (2006.01); C07C 55/18 (2006.01);
U.S. Cl.
CPC ...
C07C 51/09 (2013.01); C07C 55/02 (2013.01); C07C 55/18 (2013.01);
Abstract
This invention relates to an improved hydrolysis process for the preparation of dicarboxylic acids in which an organic phase comprising triglycerides of carboxylic acids having more than one acid functional group and a mixture comprising dicarboxylic acids, glycerine and partial esters of glycerine are mixed with water and hydrolysed at temperatures of between 50 and 350° C., and at pressures of or above the equilibrium vapor pressure. This process makes it possible to obtain high hydrolysis yields, even in short times.