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. 21, 2019
Filed:
Oct. 02, 2015
Applicant:
Novamont S.p.a., Novara, IT;
Inventors:
Federico Faiella, Castelletto Sopra Ticino, IT;
Tiziana Milizia, Novara, IT;
Roberto Vallero, Borgo D'Ale, IT;
Assignee:
NOVAMONT S.P.A., Novara, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/02 (2006.01); C08G 63/183 (2006.01); C08G 63/16 (2006.01); C08G 63/181 (2006.01); C08G 63/85 (2006.01); C08G 63/46 (2006.01);
U.S. Cl.
CPC ...
C08G 63/183 (2013.01); C08G 63/16 (2013.01); C08G 63/181 (2013.01); C08G 63/46 (2013.01); C08G 63/85 (2013.01);
Abstract
This invention relates to a process for the production of polyesters comprising an esterification/transesterification stage and a polycondensation stage, characterized in that the said polycondensation stage is carried out in the presence of a catalyst comprising a mixture of at least one Titanium-based compound and at least one Zirconium-based compound in which the Ti/(Ti+Zr) ratio by weight is equal to or greater than 0.01 and equal to or less than 0.40.