Explosive and thermic compositions or charges – Metal or alloy or metalloid – each in particulate form – with... – With nitrated organic compound
Patent
1996-05-14
1999-09-28
Miller, Edward A.
Explosive and thermic compositions or charges
Metal or alloy or metalloid, each in particulate form, with...
With nitrated organic compound
149 36, 149 37, 149 45, C06B 3308, C06B 3300
Patent
active
059592427
ABSTRACT:
The present invention relates to an autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. The autoignition compositions of the invention include a mixture of an oxidizer composition and a powdered metal, wherein the oxidizer composition includes at least one of an alkali metal or an alkaline earth metal nitrate, a complex salt nitrate, such as Ce(NH.sub.4).sub.2 (NO.sub.3).sub.6 or ZrO(NO.sub.3).sub.2, a dried, hydrated nitrate, such as Ca(NO.sub.3).sub.2.4H.sub.2 O or Cu(NO.sub.3).sub.2.2.5 H.sub.2 O, silver nitrate, an alkali or alkaline earth chlorate, an alkali or alkaline earth metal perchlorate, ammonium perchlorate, a nitrite of sodium, potassium, or silver, or a solid organic nitrate, nitrite, or amine, such as guanidine nitrate, nitroguanidine and 5-aminotetrazole, respectively. The present invention also relates to a method for initiating a gas generator or pyrotechnic composition in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. In the method of the invention, the gas generator or pyrotechnic composition is placed in thermal contact with an autoignition composition of the invention.
REFERENCES:
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patent: 5429691 (1995-07-01), Hinshaw et al.
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patent: 5482579 (1996-01-01), Ochi et al.
patent: 5538567 (1996-07-01), Henry et al.
patent: 5542688 (1996-08-01), Scheffee
Knowlton Gregory D.
Ludwig Christopher P.
Miller Edward A.
Talley Defense Systems, Inc.
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