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. 25, 2007
Filed:
Feb. 06, 2003
Michael Stoesser, Neuhofen, DE;
Edward Bohres, Ludwigshafen, DE;
Georg Heinrich Grosch, Bad Duerkheim, DE;
Wilfried Sager, Mutterstadt, DE;
Michael Stoesser, Neuhofen, DE;
Edward Bohres, Ludwigshafen, DE;
Georg Heinrich Grosch, Bad Duerkheim, DE;
Wilfried Sager, Mutterstadt, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The present invention relates to a process for reacting epoxides with an initiator compound in the presence of a double metal cyanide compound as a catalyst, said process having a shortened induction period, and the double metal cyanide compound being activated by adding the epoxide to a mixture of double metal cyanide compound and initiator compound at an internal reactor pressure of less than 1 bar, and also to the polyethers themselves obtainable by such a process.