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:
Jun. 02, 2015
Filed:
Sep. 06, 2011
Applicants:
Christoph Gürtler, Köln, DE;
Jörg Hofmann, Krefeld, DE;
Aurel Wolf, Wülfrath, DE;
Stefan Grasser, Leverkusen, DE;
Inventors:
Christoph Gürtler, Köln, DE;
Jörg Hofmann, Krefeld, DE;
Aurel Wolf, Wülfrath, DE;
Stefan Grasser, Leverkusen, DE;
Assignee:
Bayer Intellectual Property GmbH, Monheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 64/32 (2006.01); C08G 64/34 (2006.01); C08G 64/18 (2006.01); C08G 65/26 (2006.01); C08G 59/20 (2006.01);
U.S. Cl.
CPC ...
C08G 64/34 (2013.01); C08G 64/183 (2013.01); C08G 65/2663 (2013.01); C08G 65/2603 (2013.01);
Abstract
The present invention relates to a process for the preparation of polyether carbonate polyols from one or more alkylene oxides, carbon dioxide and optionally from one or more H-functional starter substances in the presence of at least one double metal cyanide catalyst, wherein the double metal cyanide catalyst comprises an unsaturated alcohol as a complexing ligand.