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. 28, 2010
Filed:
Mar. 17, 2005
Roland Hubel, Essen, DE;
Georg Markowz, Karlstein, DE;
Manfred Recksik, Essen, DE;
Markus Rudek, Frankfurt am Main, DE;
Dietmar Wewers, Bottrop, DE;
Florian Zeller-schuldes, Erlensee, DE;
Roland Hubel, Essen, DE;
Georg Markowz, Karlstein, DE;
Manfred Recksik, Essen, DE;
Markus Rudek, Frankfurt am Main, DE;
Dietmar Wewers, Bottrop, DE;
Florian Zeller-Schuldes, Erlensee, DE;
Evonik Goldschmidt GmbH, , DE;
Abstract
The invention relates to a process and to an apparatus for preparing polyether alcohols by alkoxylating alcohols, and also long-chain polyether alcohols having a narrow product distribution. The process is preferably carried out continuously in the liquid phase in a microstructured reactor. An alkylene oxide or different alkylene oxides are metered at one or more points into the channels of the microreactor. The channels are cooled with the aid of a cooling medium or heated with the aid of a heating medium.