Process for forming a dinitramide salt or acid

Details Process for forming a dinitramide salt or acid Process for forming a dinitramide salt or acid

C - Chemistry, Metallurgy

01

B

C01B 21/082 (2006.01) C06B 25/00 (2006.01) C06B 25/34 (2006.01) C06B 31/00 (2006.01) C06B 41/00 (2006.01) C07C 211/36 (2006.01) C07C 211/63 (2006.01) C07C 243/10 (2006.01) C07C 271/08 (2006.01)

Patent

CA 2128608

2128608 9316002 PCTABS00025 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 ·C to about -120 ·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 an NO2-group; a nitryl halide; or a nitronium salt having the formula (NO2+)qX-q, where X is the anion of the nitronium salt and q = 1-2.

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