Chemistry of inorganic compounds – Nitrogen or compound thereof – Oxygen containing
Patent
1992-10-30
1995-05-16
Miller, Edward A.
Chemistry of inorganic compounds
Nitrogen or compound thereof
Oxygen containing
423387, 564107, 564109, C01F 1700
Patent
active
054158524
ABSTRACT:
A method is disclosed for forming an ionically bonded dinitramide salt or acid useful as a stable oxidizer for solid fuel rocket propellant or explosive formulations is disclosed. The dinitramide salt is formed by the reaction of an N(alkoxycarbonyl)N-nitroamide and a nitronium-containing compound, at a temperature of from about +60.degree. C. to about -120.degree. C., followed by contacting the reaction mass with a base to form the dinitramide salt, or an alcohol to form the corresponding dinitramidic acid. The N(alkoxycarbonyl)N-nitroamide may be formed by first mixing the corresponding alkylcarbamate with an anhydride of one or more 1-20 carbon organic acids, then adding nitric acid to the reaction mixture. If the salt of the N(alkoxycarbonyl)N-nitroamide is to be formed, a base is then added until the pH reaches about 7-10. The nitronium-containing reactant may be a covalently bonded compound containing a NO.sub.2 -- group; a nitryl halide; or a nitronium salt having the formula (NO.sub.2.sup.+).sub.q X.sup.-q, where X is the anion of the nitronium salt and q=1-2.
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Bomberger David C.
Bottaro Jeffrey C.
Penwell Paul E.
Schmitt Robert J.
Miller Edward A.
SRI - International
Taylor John P.
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