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:
Feb. 18, 2025
Filed:
Dec. 14, 2020
Applicant:
Covestro Intellectual Property Gmbh & Co. KG, Leverkusen, DE;
Inventors:
Klaus Lorenz, Dormagen, DE;
Frank Kleinig, Dormagen, DE;
Assignee:
Covestro Deutschland AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/672 (2006.01); C08G 18/08 (2006.01); C08G 18/10 (2006.01); C08G 18/42 (2006.01); C08G 63/48 (2006.01); C08G 63/82 (2006.01); C08G 65/26 (2006.01); C08G 101/00 (2006.01);
U.S. Cl.
CPC ...
C08G 63/672 (2013.01); C08G 18/10 (2013.01); C08G 18/14 (2013.01); C08G 18/4261 (2013.01); C08G 18/4263 (2013.01); C08G 63/48 (2013.01); C08G 63/82 (2013.01); C08G 65/26 (2013.01); C08G 2101/00 (2013.01); C08G 2110/0025 (2021.01); C08G 2650/36 (2013.01); C08G 2650/38 (2013.01);
Abstract
The present invention relates to a process for preparing polyoxyalkylene polyester polyols by reacting a starter compound having Zerewitinoff-active H atoms, a cyclic dicarboxylic acid anhydride and a fatty acid ester with an alkylene oxide in the presence of a basic catalyst. The invention further relates to polyoxyalkylene polyester polyols resulting from the method and to a preparation method for polyurethanes by reaction of the polyoxyalkylene polyester polyols according to the invention.