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:
May. 25, 2010
Filed:
Jul. 11, 2006
Stephan Herwig, Hassloch, DE;
Thomas Ostrowski, Mannheim, DE;
Dirk Meckelnburg, Ludwigshafen, DE;
Achim Loeffler, Speyer, DE;
Renata Jovanovic, Ludwigshafen, DE;
Werner Weinle, Bad Friedrichshall, DE;
Stephan Herwig, Hassloch, DE;
Thomas Ostrowski, Mannheim, DE;
Dirk Meckelnburg, Ludwigshafen, DE;
Achim Loeffler, Speyer, DE;
Renata Jovanovic, Ludwigshafen, DE;
Werner Weinle, Bad Friedrichshall, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The invention provides a process for continuously preparing polyether alcohols using DMC catalysts, which comprises, in a first step, in a continuous reactor, adding alkylene oxides onto H-functional starter substances and transferring the output of this reactor to a second step in a reactor which is divided by closed trays into mutually separate sections, known as compartments, which are connected to one another by external pipelines, in which the output of the reactor from the first step of the reaction passes through the compartments in succession.