Lead-and barium-free propellant charges

Abstract

The subject of the present invention is lead- and barium-free propellant charges with primary explosives mixed with oxygen-supplying substances, characterized in that the primary explosives are selected from alkali metal and/or alkaline earth metal salts of dinitrobenzofuroxanes and the oxygen-supplying substances are chosen from metal peroxides, nitrates of ammonium, guanidine, aminoguanidine, triaminoguanidine, dicyanodiamidine, and the elements sodium, potassium, magnesium, calcium, cerium, and/or multivalent metal oxides. The propellant charges according to the invention exhibit increased stability with respect to known propellant charges that are free of harmful substances. From: Von Kreisler, Selting & Werner, Patent Attorneys To: Dynamit Nobel GmbH Explosivstoff- und Systemtechnik Kaiserstrasse 1 53840 Troisdorf Date: Oct. 27, 1995 Our Reference: 951355de HPJ/ko 0321

1 . Lead- and barium-free propellant charges with priming explosives mixed with oxygen-supplying substances, characterized in that the priming explosives are chosen from alkali metal and/or alkaline earth metal salts of dinitrobenzofuroxanes and the oxygen-supplying substances are chosen from metal peroxides, nitrates of ammonium, guanidine, aminoguanidine, triaminoguanidine, dicyanodiamidine, and the elements sodium, potassium, magnesium, calcium, cerium, and/or multivalent metal oxides.  
     
     
         2 . Propellant charges according to  claim 1  with an amount of priming explosive equal to 5 to 70 wt. %, especially 30 to 60 wt. % based on the total mixture.  
     
     
         3 . Propellant charges according to  claim 1  with an amount of oxygen-supplying substance of 5 to 70 wt. %, especially 8 to 60 wt. % based on the total mixture.  
     
     
         4 . Propellant charges according to  claim 1 , characterized in that the metal peroxide is zinc peroxide.  
     
     
         5 . Propellant charges according to  claim 1 , characterized in that the metal oxides are chosen from cerium dioxide, tungsten trioxide, and/or stannous dioxide.  
     
     
         6 . Propellant charges according to  claim 1 , also containing sensitizers, reducing agents, friction media, secondary explosives, and/or inert substances.  
     
     
         7 . Propellant charges according to  claim 6 , containing tetrazene as the sensitizer, especially in an amount of 0 to 30 wt. % based on the total mixture.  
     
     
         8 . Propellant charges according to  claim 6 , with the reducing agents being selected from carbon, metal powders, especially of boron, aluminium, cerium, titanium, zirconium, magnesium, and/or silicon, from metal alloys, especially cerium-magnesium, cerium-silicon, titanium-aluminum, aluminum-magnesium, and calcium silicide, and from metal sulfides, especially antinomy sulfide and/or molybdenum sulfide as well as from metal hydrides, titanium hydride for example, especially in an amount of 0 to 20 wt. % based on the total mixture.  
     
     
         9 . Propellant charges according to  claim 6  containing glass powder as a friction agent, especially in an amount of 0 to 45 wt. % based on the total mixture.  
     
     
         10 . Propellant charges according to  claim 6  with the secondary explosives being chosen from hexogen, octogen, and amino compounds of nitrated aromatics, especially in amounts of 0 to 30 wt. % based on the total mixture.  
     
     
         11 . Propellant charges according to  claim 6  with the inert substances being chosen from binders, adhesives, dyes, passivators, and/or substances to characterize odor, especially in an amount of 0 to 20 wt. %, based on the total mixture.  
     
     
         12 . Propellant charges according to  claim 11  with the medium for odor characterization being vanillin.