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:
Mar. 17, 2020
Filed:
Sep. 14, 2016
Applicant:
Synvina C.v., Amsterdam, NL;
Inventor:
Laszlo Sipos, Amsterdam, NL;
Assignee:
Synvina C.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/16 (2006.01); C08G 63/78 (2006.01); C08G 63/181 (2006.01);
U.S. Cl.
CPC ...
C08G 63/16 (2013.01); C08G 63/181 (2013.01); C08G 63/78 (2013.01);
Abstract
A polyester including ethylene 2,5-furandicarboxylate units is prepared in a process, where in an esterification step a 2,5-furandicarboxylate compound is reacted with ethylene glycol to form an ester composition, including components with 2-hydroxyethyl and 2,5-furandicarboxylate moieties; where in a polycondensation step the ester composition thus obtained is subjected to polycondensation at reduced pressure in the presence of a polycondensation catalyst to obtain a polycondensate; and where during the polycondensation step 2,5-furandicarboxylic acid is added to the ester composition.