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. 18, 2012
Filed:
Aug. 21, 2008
Donald W. Boyd, Cheswick, PA (US);
Venkatachalam Eswarakrishnan, Allison Park, PA (US);
Charles R. Hickenboth, Cranberry Township, PA (US);
Richard F. Karabin, Ruffs Dale, PA (US);
Gregory J. Mccollum, Gibsonia, PA (US);
Britt A. Minch, Tarentum, PA (US);
Thomas C. Moriarity, Allison Park, PA (US);
Steven R. Zawacky, Pittsburgh, PA (US);
Donald W. Boyd, Cheswick, PA (US);
Venkatachalam Eswarakrishnan, Allison Park, PA (US);
Charles R. Hickenboth, Cranberry Township, PA (US);
Richard F. Karabin, Ruffs Dale, PA (US);
Gregory J. McCollum, Gibsonia, PA (US);
Britt A. Minch, Tarentum, PA (US);
Thomas C. Moriarity, Allison Park, PA (US);
Steven R. Zawacky, Pittsburgh, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
The present invention is directed to a method for producing bicyclic guanidines comprising heating a reaction mixture comprising cyclic urea and a dehydrating agent to a temperature ≧90° C.