초록

A non-toxic primer composition for use in ammunition is provided with a hygroscopic oxidizer which is protected from absorption of water vapor by a water-barrier coating. A preferred oxidizer is potassium nitrate and a preferred coating is nitrocellulose.

대표청구항 ▼

1. A primer composition comprising KNO3as the predominant hygroscopic oxidizer therein which is combined with nitrocellulose as a coating to provide a waterproofing vapour barrier material to protect the KNO3oxidizer from undue absorption of water vapour. 2. A primer composition as in claim 1 compri

1. A primer composition comprising KNO3as the predominant hygroscopic oxidizer therein which is combined with nitrocellulose as a coating to provide a waterproofing vapour barrier material to protect the KNO3oxidizer from undue absorption of water vapour. 2. A primer composition as in claim 1 comprising the following components by percentage weight: TBL Component % Weight DDNP 20-30 PETN 2-4 Tetrazene 7-12 KNO2 25-30 Nitrocellulose 0.5-1.5 ZnO.ZnO2 15-20 Frictionator an effective amount as a frictionator Aluminum 5-10 Resinous binder an effective amount as a binder. 3. A primer composition as in claims 1 or 2 comprising KNO3predominating as the principal source of oxygen and ZnO.ZnO2(containing at least 50-60% of ZnO2) as secondary oxidizer. 4. A primer composition as in claims 1, 2 or 3 that is free of toxic metals selected from the group consisting of: lead, barium, antimony. 5. A primer composition comprising the following components in substantially the percent weights as indicated: TBL DDNP 30 PETN 2 Tetrazene 8 KNO3 26 Nitrocellulose 1 ZnO.ZnO2 17 SiC 7 Aluminum 8 Acrylic resin 1.