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. 07, 2002
Filed:
May. 19, 2000
Applicant:
Inventors:
David E. Laycock, Ontario, CA;
Kendra L. Flagler, Fenelon Falls, CA;
Robert J. Gulotty, Jr., Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 4/311 ; C08G 5/968 ; C08G 6/512 ; B01J 3/112 ;
U.S. Cl.
CPC ...
C07C 4/311 ; C08G 5/968 ; C08G 6/512 ; B01J 3/112 ;
Abstract
Metal hexacyanocobaltate nitroferricyanide catalysts are active polymerization catalysts for alkylene oxides. These catalysts tend to have short induction periods, followed by rapid polymerization of alkylene oxides to polyethers.