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:
Apr. 17, 2012
Filed:
Feb. 26, 2009
Eun Mee Goh, Daejeon-si, KR;
Jin Seuk Kim, Daejeon-si, KR;
Jin Rai Cho, Daejeon-si, KR;
Hyoun-soo Kim, Daejeon-si, KR;
Eun Mee Goh, Daejeon-si, KR;
Jin Seuk Kim, Daejeon-si, KR;
Jin Rai Cho, Daejeon-si, KR;
Hyoun-Soo Kim, Daejeon-si, KR;
Agency for Defense Development, Daejeon-si, KR;
Abstract
Disclosed is a method for the nitration of 4,6-dihydroxy-2-methylpyrimidine for the synthesis of 4,6-dihydroxy-5,5-dinitro-2-(dinitromethylene)-2,5-dihydropyrimidine which is used as a precursor of 1,1-diamino-2,2-dinitroethylene, one type of explosives. The present invention provides an improved method for the nitration of 4,6-dihydroxy-2-methylpyrimidine, wherein organic solvent is applied in the nitration process of 4,6-dihydroxy-2-methylpyrimidine thereby solving the safety problem while improving the yield of nitration.