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:
Aug. 25, 2015
Filed:
Apr. 22, 2011
Polyether polyols, process for preparing polyether polyols and their use for producing polyurethanes
Andreas Kunst, Ludwigshafen, DE;
Berend Eling, Lemfoerde, DE;
Achim Loeffler, Speyer, DE;
Heinz-dieter Lutter, Lembruch, DE;
Wei Han, Pudong, CN;
Jens Mueller, Lohne, DE;
Andreas Kunst, Ludwigshafen, DE;
Berend Eling, Lemfoerde, DE;
Achim Loeffler, Speyer, DE;
Heinz-Dieter Lutter, Lembruch, DE;
Wei Han, Pudong, CN;
Jens Mueller, Lohne, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention relates to a process for preparing polyether polyols, in which at least one hydroxyl-comprising fatty acid ester and/or at least one hydroxyl-modified fatty acid ester is reacted with the aid of a double metal cyanide catalyst in at least two process sections with in each case a mixture of ethylene oxide and at least one further alkylene oxide different from ethylene oxide.