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:
Aug. 01, 2000
Filed:
Dec. 09, 1999
Richard V Carr, Allentown, PA (US);
Kristen Elaine Minnich, Allentown, PA (US);
John Anthony Marsella, Allentown, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
N,N'-dialkylurea and an .alpha.,.beta.-unsaturated nitrile are reacted to form a cyclic N,N'-dialkylurea containing an imine group on a ring carbon. This compound is useful as an intermediate in the formation of N,N'-dialkylpropyleneureas by hydrogenation followed by hydrogenolysis to remove the imine group. Using N,N'-dimethylurea and acrylonitrile as the starting materials one can arrive at N,N'-dimethylpropyleneurea which is a compound useful as an organic solvent and known by its acronym, DMPU.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile