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. 23, 2023
Filed:
Aug. 14, 2019
Applicant:
Covestro Intellectual Property Gmbh & Co. KG, Leverkusen, DE;
Inventors:
Assignee:
Covestro Intellectual Property GmbH & Co. KG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/10 (2006.01); C08G 64/20 (2006.01); C08G 63/64 (2006.01); C07C 69/75 (2006.01);
U.S. Cl.
CPC ...
C07C 67/10 (2013.01); C07C 69/75 (2013.01); C08G 63/64 (2013.01); C08G 64/20 (2013.01);
Abstract
The present invention relates to a method for producing a cycloaliphatic diester, to a method for producing a polyestercarbonate using the one cycloaliphatic diester, to the use of a cycloaliphatic diester for producing polyestercarbonates and also to a polyestercarbonate. The method according to the invention is here in particular characterized in that the cycloaliphatic diester is separated by means of distillation from the reaction mixture.