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Non-toxic, heavy-metal free explosive percussion primers and methods of preparing the same

  • US 8,470,107 B2
  • Filed: 05/22/2012
  • Issued: 06/25/2013
  • Est. Priority Date: 03/31/2010
  • Status: Active Grant
First Claim
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1. A primer composition comprising:

  • an explosive consisting essentially of at least one moderately insensitive explosive in an amount of about 5 wt-% to about 40 wt-% of the primer composition and optionally a sensitizer in an amount of about 0 wt-% to about 20 wt-% of the primer composition, said at least one moderately insensitive explosive chosen from nitrocellulose, pentaerythritol tetranitrate (“

    PETN”

    ), 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo [5.5.0.0.5,903,11]-dodecane (“

    CL-20”

    ), cyclo-1,3,5-trimethylene-2,4,6-trinitramine (“

    RDX”

    ), cyclotetramethylene tetranitramine (“

    HMX”

    ), 2,4,6-trinitrotoluene (“

    TNT”

    ), nitroguanidine, styphnic acid, potassium dinitrobenzofuroxan (“

    KDNBF”

    ), and mixtures thereof;

    a plurality of fuel particles having an average particle size of greater than about 1.5 microns to about 12 microns, said plurality of fuel particles in an amount of about 5 wt-% to about 20 wt-% of the primer composition; and

    an oxidizer in an amount of about 35 wt-% to about 85 wt-% of the primer composition;

    wherein the primer composition is essentially devoid of other explosives except for the optional sensitizer and/or a propellant.

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