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:
Apr. 04, 2006
Filed:
Feb. 16, 2001
Thomas Ostrowski, Castrop-Rauxel, DE;
Kathrin Harre, Dresden, DE;
Georg Heinrich Grosch, Bad Dürkheim, DE;
Jürgen Winkler, Schwarzheide, DE;
Thomas Ostrowski, Castrop-Rauxel, DE;
Kathrin Harre, Dresden, DE;
Georg Heinrich Grosch, Bad Dürkheim, DE;
Jürgen Winkler, Schwarzheide, DE;
Basf Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Polyetherpolyols are prepared by reacting diols or polyols with ethylene oxide, propylene oxide, butylene oxide or a mixture thereof in the presence of a multimetal cyanide complex catalyst by a process which is carried out in a vertical, highly cylindrical reactor having a central stirrer and having heat exchanger plates through which a heat-exchange medium flows and which are arranged essentially in the longitudinal direction of the reactor, at an angle α of from 0 to 70° in the direction of rotation of the stirrer relative to the reactor radius.