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. 30, 2006
Filed:
Apr. 20, 2005
Applicants:
Edward M. Dexheimer, Grosse Ile, MI (US);
Jacob Wildeson, Chambersburg, PA (US);
Werner Hinz, Grosse Ile, MI (US);
Inventors:
Edward M. Dexheimer, Grosse Ile, MI (US);
Jacob Wildeson, Chambersburg, PA (US);
Werner Hinz, Grosse Ile, MI (US);
Assignee:
BASF Corporation, Florham Park, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 43/18 (2006.01); C08G 59/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved method for synthesizing a double metal cyanide (DMC) catalyst combines and sonicates aqueous and non-aqueous solutions of a first metal salt, such as Zn(OAc), of a second metal salt, such as CoCl, and of an alkali metal cyanide, such as NaCN, to synthesize the DMC catalyst, Zn[Co(CN)]. An improved method of producing a polyether polyol uses the DMC catalyst to produce the polyol.