Patent ID: 8778104

Claim:
A substantially nitrocellulose-free insensitive gun propellant for barrel-type weapons, comprising: a first energetic filler comprising at least one nitramine selected from at least one of HMX, RDX, and a combination of HMX and RDX; a second energetic filler; and an inert binder system comprising at least one inert polymer and an inert plasticizer, wherein the gun propellant produces a maximum projectile velocity, which exceeds 2680 ft/sec when fired from a 5 inch 54 caliber gun and produces a response to slow cook-off insensitive munitions testing of at least Type 4 and a response to fragment impact insensitive munitions testing of at least Type 3 as measured by STANAG 4382 and STANAG 4496, respectively, wherein the gun propellant further comprises a flash suppressant, which is potassium sulfate, wherein the gun propellant further comprises a lead-free de-coppering agent, which is bismuth oxide, and wherein the second energetic filler comprises a member selected from at least one of 1,1-diamino-2,2-dinitroethene, 1,3,5-triamino-2,4,6-trinitrobenzene, 3-nitro-1,2,4-triazole-5-one, bis-dinitropropyl nitrate, guanylurea dinitramide, and 2,6-diamino-3,5-dinitropyrazine-1-oxide.