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:
Dec. 24, 2024
Filed:
Dec. 12, 2019
Polyester carbonates from cycloaliphatic diacids and aliphatic diols, and process for preparing same
Applicant:
Covestro Intellectual Property Gmbh & Co. KG, Leverkusen, DE;
Inventors:
Alexander Meyer, Düsseldorf, DE;
Thomas Pfingst, Tönisvorst, DE;
Helmut Werner Heuer, Siegen, DE;
Jan Heijl, Lokeren, BE;
Annabelle Bertin, Antwerp, BE;
Assignee:
Covestro Intellectual Property GmbH & Co. KG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/64 (2006.01); C08G 63/199 (2006.01); C08G 63/82 (2006.01); C08G 64/02 (2006.01); C08G 64/30 (2006.01); C08L 69/00 (2006.01);
U.S. Cl.
CPC ...
C08L 69/005 (2013.01); C08G 63/199 (2013.01); C08G 63/64 (2013.01); C08G 63/82 (2013.01); C08G 64/0208 (2013.01); C08G 64/305 (2013.01);
Abstract
The present invention relates to a method for preparing a polyester carbonate starting from cycloaliphatic diacids and aliphatic diols and to the polyester carbonate prepared by the method. The method according to the invention is a direct synthesis in which all the structural elements that form the subsequent polyester carbonate are already present as monomers in the first step of the method.