Ammunition primer composition for small arms

Abstract

A heavy-metal free primer composition consisting essentially of potassium dinitrobenzofuroxane as a primary explosive, diazodinitrophenol as a secondary sensitization explosive, and an inert sensitizer is disclosed. The preferred mix is comprised of 50% of potassium dinitrobenzofuroxane, 30% of diazodinitrophenol and 20% of ceramics powder as the inert sensitizer. This composition has sufficient sensitivity, good ballistic properties for all types of cartridges and very strong stability in high temperature and high humidity conditions.

1 . A percussion primer mixture for use in ammunition comprising: 
 diazodinitrophenol;    potassium salt of dinitrobenzofuroxane (potassium dinitrobenzofuroxane); and    an inert sensitizer.    
     
     
         2 . The primer mixture according to  claim 1 , having ceramics powder as the inert sensitizer.  
     
     
         3 . The primer mixture according to  claim 1 , having from 20 to 40 percent by weight of said diazodinitrophenol, 30 to 70 percent by weight of said potassium dinitrobenzofuroxane, and 15 to 25 percent by weight of said inert sensitizer.  
     
     
         4 . The primer mixture according to  claim 3 , having ceramics powder as the inert sensitizer.  
     
     
         5 . The primer mixture according to  claim 3 , having a 30 percent by weight of said diazodinitrophenol.  
     
     
         6 . The primer mixture according to  claim 3 , having a 50 percent by weight of said potassium dinitrobenzofuroxane.  
     
     
         7 . The primer mixture according to  claim 3 , having a 20 percent by weight of said inert sensitizer.  
     
     
         8 . The primer mixture according to  claim 7 , having ceramics powder as the inert sensitizer.  
     
     
         9 . The primer mixture according to  claim 3 , having 30 percent by weight of said diazodinitrophenol, 50 percent by weight of said potassium dinitrobenzofuroxane, and 20 percent by weight of said inert sensitizer.  
     
     
         10 . The primer mixture according to  claim 9 , having ceramics powder as the inert sensitizer.  
     
     
         11 . A percussion primer mixture for use in ammunition comprising: 
 diazodinitrophenol;    potassium salt of dinitrobenzofuroxane (potassium dinitrobenzofuroxane);    an inert sensitizer;    graphite powder; and    silica gel dust.    
     
     
         12 . The primer mixture according to  claim 11 , having up to 0.3 percent by weight of said graphite powder and up to 0.1 percent by weight of said silica gel dust.