Method of forming dinitramide salts
First Claim
1. A method of making a N,N-dinitramide salt having the formula MN(NO2)2 where M is a cation selected from the class consisting of a metal ion and a nitrogen-containing ion which comprises:
- a) contacting a carbamate with a nitrating agent to form an acidic dinitramide intermediate reaction product having the formula HN(NO2)2 ; and
b) neutralizing the acidic dinitramide intermediate reaction product by contacting it with a compound selected from the class consisting of ammonia (NH3), hydrazine (N2 H4), a primary amine having the formula RNH2, a secondary amine having the formula RR'"'"'NH, and a salt having the formula AX;
where R and R'"'"' are the same or different 1-6 carbon alkyls, A is a metal ion or a nitrogen-containing ion, and X is an anion selected from the class consisting of a fluoride, chloride, hydroxyl, carbonate, alkoxide, and carboxyl.
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Abstract
A method is disclosed for forming a N,N-dinitramide salt having the formula MN(NO2)2 where M is a cation selected form the class consisting of a metal ion and a nitrogen-containing ion, which comprises contacting a carbamate with a nitrating agent to form an acidic dinitramide intermediate reaction product, and neutralizing the acidic dinitramide with a compound selected from the class consisting of ammonia (NH3), hydrazine (N2 H4), a primary amine having the formula RNH2, a secondary amine having the formula RR'"'"'NH, and a salt having the formula AX; where R and R'"'"' are the same or different 1-6 carbon alkyls, A is a metal ion or a nitrogen-containing ion, and X is an anion selected from the class consisting of fluoride, chloride, hydroxyl, carbonate, alkoxide, and carboxyl anion, to form the corresponding dinitramide salt.
26 Citations
22 Claims
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1. A method of making a N,N-dinitramide salt having the formula MN(NO2)2 where M is a cation selected from the class consisting of a metal ion and a nitrogen-containing ion which comprises:
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a) contacting a carbamate with a nitrating agent to form an acidic dinitramide intermediate reaction product having the formula HN(NO2)2 ; and b) neutralizing the acidic dinitramide intermediate reaction product by contacting it with a compound selected from the class consisting of ammonia (NH3), hydrazine (N2 H4), a primary amine having the formula RNH2, a secondary amine having the formula RR'"'"'NH, and a salt having the formula AX;
where R and R'"'"' are the same or different 1-6 carbon alkyls, A is a metal ion or a nitrogen-containing ion, and X is an anion selected from the class consisting of a fluoride, chloride, hydroxyl, carbonate, alkoxide, and carboxyl. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of making a N,N-dinitramide salt having the formula MN(NO2)2 where M is a cation selected from the class consisting of a metal ion and a nitrogen-containing ion which comprises:
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a) contacting a carbamate selected from the class consisting of ammonium carbamate having the formula NH4+ CO2 NH2-, a 1-4 carbon di, tri, or tetra alkyl ammonium carbamate, and an alkali metal carbamate with a nitrating agent selected from the class consisting of nitronium tetrafluoroborate, (NO2+)2 (S2 O7-2), NO2+, N2 O5, AlCl4-, NO2 F, NO2+ PF6-, NO2+ AsF6-, NO2+ SbF6 -, acetylnitrate, trifluoroacetylnitrate, trifluoroacetylnitrate in combination with catalytic BF3, acetonecyanohydrin nitrate in combination with catalytic BF3, and any of said nitrating agents in combination with nitric acid to form an acidic dinitramide intermediate reaction product having the formula HN(NO2)2 ; and b) neutralizing the acidic dinitramide intermediate reaction product by contacting it with a compound selected from the class consisting of ammonia (NH3), hydrazine (N2 H4), a primary amine having the formula RNH2, a secondary amine having the formula RR'"'"'NH, and a salt having the formula AX;
where R and R'"'"' are the same or different 1-6 carbon alkyls, A is a metal ion or a nitrogen-containing ion, and X is an anion selected from the class consisting of fluoride, chloride, hydroxyl, carbonate, alkoxide, and carboxyl. - View Dependent Claims (14, 15, 16, 17)
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18. A method of making a N,N-dinitramide salt having the formula MN(NO2)2 where M is a cation selected from the class consisting of a metal ion and a nitrogen-containing ion which comprises:
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a) contacting ammonium carbamate with a nitronium tetrafluoroborate nitrating agent in acetonitrile to form an acidic dinitramide intermediate reaction product having the formula HN(NO2)2 ; and b) neutralizing the acidic dinitramide intermediate reaction product by contacting it with ammonia (NH3) to form ammonium dinitramide having the formula NH4+ N(NO2)2-. - View Dependent Claims (19, 20, 21, 22)
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Specification