Bismuth oxide primer composition

• US 20050189053A1
• Filed: 03/23/2005
• Published: 09/01/2005
• Est. Priority Date: 01/23/2004
• Status: Active Grant

• Current Assignee: Ammunition Operations, LLC (Vista Outdoor Inc.)
• Original Assignee: Donald A. Pile, Henry J. John Jr
• Inventors: Pile, Donald A., John, Henry J. Jr.
• Granted Patent: US 8,128,766 B2
• Time in Patent Office: Days
• US Class Current: 149/108.600
• CPC Class Codes: C06B 25/04 the nitrated compound being an aromatic
• CPC Class Codes: C06B 43/00 Compositions characterised by explosive or thermic constituents not provided for in groups C06B25/00 - C06B41/00
• CPC Class Codes: C06C 7/00 Non-electric detonators; Blasting caps; Primers

Abstract

A priming mixture is provided having a primary explosive and an oxidizer system containing bismuth oxide. The priming mixture generally is applicable to any application or device that employs ignition of a propellant or fuel, including, but not limited to, air bag gas generator systems, signaling devices, ejection seats, small or large arms ammunition primers, and the like.

Claims

1. A priming mixture comprising:

a primary explosive; and

an oxidizer system comprising bismuth oxide.

2. The priming mixture of claim 1, wherein the primary explosive comprises a compound selected from salts of trinitroresorcinol (TNR), salts of dinitrobenzofuroxan (DNBF), diazodinitrophenol (DDNP), salts of 5-nitrotetrazole, salts of fulminate, salts of hydrazoic acid, tetrazene, salts of tetrazene, silver salt of tetrazene, cuprous salt of tetrazene, salts of amino guanidine, salts of cyanamide, nitrocyanamide salts, nitrophenol salts, nitrosophenol salts, nitramine salts, salts of metazonic acid, oxalic salts, peroxides, acetylide salts, nitrogen sulphide, nitrogen selenide, thiocyanic salts, silver perchlorate, hexanitromannitol, barium trinitroresorcinol, thallium trinitroresorcinol, barium-lead trinitroresorcinol, copper-lead trinitroresorcinol, calcium-barium trinitroresorcinol, sodium dinitrobenzofuroxan, potassium dinitrobenzofuroxan, silver dinitrobenzofuroxan, mercury fulminate, lead azide, lead styphnate, silver azide, or any combination thereof.

3. The priming mixture of claim 1, wherein the oxidizer system further comprises a secondary oxidizer selected from zinc peroxide, manganese dioxide, molybdenum trioxide, strontium nitrate, strontium peroxide, tin oxide, iron oxide, potassium nitrate, barium nitrate, or any combination thereof.

4. The priming mixture of claim 1, further comprising a gas producing agent.

5. The priming mixture of claim 4, wherein the gas producing agent is selected from pentaerythritol tetranitrate, trinitrotoluene, or a combination thereof.

6. The priming mixture of claim 1, further comprising a reducing agent.

7. The priming mixture of claim 6, wherein the reducing agent is selected from aluminum, boron, calcium silicide, magnesium, magnesium-aluminum alloy, silicon, titanium, tungsten, zirconium, nitrocellulose, or any combination thereof.

8. The priming mixture of claim 1, further comprising a sensitizer.

9. The priming mixture of claim 8, wherein the sensitizer is selected from tetrazene, ground glass, or a combination thereof.

10. The priming mixture of claim 1, further comprising a conducting component.

11. The priming mixture of claim 10, wherein the conducting component is selected from aluminum, carbon black, titanium, zirconium, silver, gold, uranium, lead azide, silver azide, or any combinations thereof.

12. A priming mixture comprising:

from about 20% to about 70% by weight of a primary explosive;

from about 10% to about 70% by weight of an oxidizer system comprising bismuth oxide;

from about 0% to about 25% by weight of a gas producing agent;

from about 0% to about 20% by weight of a sensitizer;

from about 0% to about 20% by weight of a reducing agent; and

from about 0% to about 20% by weight of a conductive component.

13. A device that is activated by ignition of a propellant or fuel, comprising:

a priming mixture comprising a primary explosive and an oxidizer system, wherein the oxidizing system comprises bismuth oxide; and

a propellant or fuel adapted to be initiated by, and in contact with, the priming mixture.

14. The device of claim 13, wherein the device is selected from a seat belt tensioner, an air bag, a signal flare, a hand grenade, a mechanical launch grenade, a smoke grenade, a restraint system, an ejection seat, an explosive canopy, a drogue chute extractor, an aerial decoy, a powered hand tool, an industrial tool, a fastening device, a grenade launcher, a gas grenade, a stun grenade, a sub-munition, a projectile launcher, a pyrotechnic initiation delay device, an impulse motor, a delay detonator, a blasting cap, a rock crusher, a cable cutting device, a seismic explosive device, an explosive projectile, a shaped charge, a wellbore perforating apparatus, an anti-armor warhead, a muzzle-loading firearm, a burrowing animal exterminating device, a predator control device, an igniter for starting fires, or an ignition system for chemical heaters.

15. The device of claim 13, wherein the wherein the primary explosive comprises a compound selected from metal salts of trinitroresorcinol, metal salts of dinitrobenzofuroxan, potassium dinitrobenzofuroxane (KDNBF), diazodinitrophenol (DDNP), mercury fulminate, lead azide, lead styphnate, silver azide, tetrazene, metal salts of 5-nitrotetrazole, or any combination thereof.

16. The device of claim 13, wherein the oxidizer system further comprises a secondary oxidizer selected from zinc peroxide, manganese dioxide, molybdenum trioxide, strontium nitrate, strontium peroxide, tin oxide, iron oxide, potassium nitrate, barium nitrate, or any combination thereof.

17. The device of claim 13, wherein the priming mixture further comprises a gas producing agent.

18. The device of claim 17, wherein the gas producing agent is selected from pentaerythritol tetranitrate, trinitrotoluene, or a combination thereof.

19. The device of claim 13, wherein the priming mixture further comprises a reducing agent.

20. The device of claim 19, wherein the reducing agent is selected from aluminum, boron, calcium silicide, magnesium, magnesium-aluminum alloy, silicon, titanium, tungsten, zirconium, nitrocellulose, or any combination thereof.

21. The device of claim 13, wherein the priming mixture further comprises a sensitizer.

22. The device of claim 21, wherein the sensitizer is selected from tetrazene, ground glass, or a combination thereof.

23. The device of claim 13, wherein the priming mixture further comprises a conducting component.

24. The device of claim 23, wherein the conducting component is selected from aluminum, carbon black, titanium, zirconium, silver, gold, uranium, lead azide, silver azide, or any combinations thereof.

25. A device that is activated by ignition of a propellant or fuel, comprising:

a) a priming mixture, wherein the priming mixture comprises;

from about 20% to about 70% by weight of a primary explosive;

from about 10% to about 70% by weight of an oxidizer system comprising bismuth oxide;

from about 0% to about 25% by weight of a gas producing agent;

from about 0% to about 20% by weight of a sensitizer;

from about 0% to about 20% by weight of a reducing agent; and

from about 0% to about 20% by weight of a conductive component; and

b) a propellant or fuel adapted to be initiated by, and in contact with, the priming mixture.

26. The device of claim 25, wherein the device is selected from a seat belt tensioner, an air bag, a signal flare, a hand grenade, a mechanical launch grenade, a smoke grenade, a restraint system, an ejection seat, an explosive canopy, a drogue chute extractor, an aerial decoy, a powered hand tool, an industrial tool, a fastening device, a grenade launcher, a gas grenade, a stun grenade, a sub-munition, a projectile launcher, a pyrotechnic initiation delay device, an impulse motor, a delay detonator, a blasting cap, a rock crusher, a cable cutting device, a seismic explosive device, an explosive projectile, a shaped charge, a wellbore perforating apparatus, an anti-armor warhead, a muzzle-loading firearm, a burrowing animal exterminating device, a predator control device, an igniter for starting fires, or an ignition system for chemical heaters.

27. The device of claim 25, wherein the priming mixture comprises from about 25% to about 50% by weight of the primary explosive.

28. The device of claim 25, wherein the priming mixture comprises from about 25% to about 55% by weight of the oxidizer system.

29. The device of claim 25, wherein the priming mixture comprises from about 5% to about 25% by weight of the gas producing agent.

30. The device of claim 25, wherein the priming mixture comprises from about 5% to about 20% by weight of the sensitizer.

31. The device of claim 25, wherein the priming mixture comprises from about 5% to about 20% by weight of the reducing agent.

32. The device of claim 25, wherein the priming mixture comprises from about 0.1% to about 10% by weight of a conductive component.