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:
Sep. 05, 2006
Filed:
Mar. 17, 2003
Applicant:
Richard M. Wehmeyer, Lake Jackson, TX (US);
Inventor:
Richard M. Wehmeyer, Lake Jackson, TX (US);
Assignee:
United States of America, Washington, DC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 31/00 (2006.01); B01J 27/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
Double metal cyanide catalysts (DMC) are complexed with complexing agents that are miscible in poly(propylene oxide) at higher temperatures and immiscible at lower temperatures. The complexing agent is a poly(ethylene oxide) polymer or a copolymer having a poly(ethylene oxide) block. The catalyst is easily removed from a polyether polyol.