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AssigneeAtlantic Research Corporation
InventorsBrian K. Wheatley, Aaron J. Greso, Norman H. Lundstrom
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Gas generant compositions exhibit low autoignition temperatures. In preferred forms, the gas generant compositions include azobisformamidine dinitrate (AZODN) and a eutectic mixture (comelt) of silver nitrate and potassium nitrate. The comelt of silver nitrate and potassium nitrate is most preferably present in the formulations of the invention in an amount to achieve a low autoignition temperature of between about 140° C. (284° F.) to about 160° C. (320° F.). The compositions of the invention may include a variety of auxiliary components typically employed in conventional gas generant compositions for their intended purpose. For example, especially preferred formulations of the present invention will include a powdered metal or metal oxide as a combustion catalyst to speed the decomposition reaction and also as a combustion aid to facilitate the ignition of the primary propellant or gas generant.
An auto-ignition material for a hot gas-producing device which exhibits a reduced auto-ignition temperature comprising azodiformamidine dinitrate (AZODN), and a low-melting oxidizer which consists essentially of a eutectic or solid solution of binary, tertiary or ternary mixtures of inorganic nitrates and/or perchlorate salts and a low-melting, acid scavenging thermal stabilizer and catalytic metal oxide.
An auto-ignition material for a hot gas-producing device which exhibits a reduced auto-ignition temperature comprising azodiformamidine dinitrate (AZODN), and a low-melting oxidizer which consists essentially of a eutectic or solid solution of binary, tertiary or ternary mixtures of inorganic nitrates and/or perchlorate salts, wherein the oxidizer is a low-melting eutectic of solid solution comprised of silver nitrate and at least one other nitrate salt of a Group IA or Group IIA element.
An auto-ignition material for a hot gas-producing device which exhibits a reduced auto-ignition temperature comprising azodiformamidine dinitrate (AZODN), and a low-melting oxidizer which consists essentially of a eutectic or solid solution of binary, tertiary or ternary mixtures of inorganic nitrates and/or perchlorate salts and further comprising AZODN in an amount of about 61 wt. %.
A solid gas generant composition comprising azobisformamidine dinitrate (AZODN), and an oxidizer which includes a comelt of silver nitrate and potassium nitrate.
A solid powdered gas generant composition which consists essentially of (i) between about 40 to about 65 wt. % of azobisformamidine dinitrate (AZODN), (ii) between about 30 to about 35 wt. % of a eutectic mixture of silver nitrate and potassium nitrate, and (ii) between about 0.5 to about 1.5 wt. % of iron oxide.
A method of reducing the auto-ignition temperature of an autoignition material which comprises mixing, in amounts effective to reduce the auto-ignition temperature, azodiformamidine dinitrate (AZODN) and a low-melting oxidizer which consists essentially of a eutectic or solid solution of binary, tertiary or ternary mixtures of inorganic nitrates and/or perchiorate salts and low-melting, acid scavenging thermal stabilizer and catalytic metal oxide.
A method of reducing the auto-ignition temperature of an autoignition material which comprises mixing, in amounts effective to reduce the auto-ignition temperature, azodiformamidine dinitrate (AZODN), and an oxidizer which includes a comelt of silver nitrate and potassium nitrate.
Dependencies are inferred from the claim text.