Process for preparing ammonium dinitramide
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsAlfred G. Stern, William M. Koppes, Michael E. Sitzmann, Lori A. Nock, Donna M. Cason-Smith
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Abstract
A process for preparing ammonium dinitramide by: (1) nitrating either ethyl carbamate or methyl carbamate to form the corronding mononitrate compound, ethyl N-nitrocarbamate or methyl N-nitrocarbamate; (2) reacting the N-nitrocarbamate with ammonia under anhydrous conditions to produce the corresponding ammonium salt, ammonium ethyl N-nitrocarbamate or ammonium methyl N-nitrocarbamate; (3) nitrating the ammonium salt and then treating the reaction mixture with ammonia to produce ammonium dinitramide, ammonium nitrate, and regenerate the original ethyl carbamate or methyl carbamate compound.
Claims8
A process for producing ammonium dinitramide comprising the following steps in order:
- (1) nitrating a compound of the formula Z--NH.sub.2 to form a compound of the formula Z--NHNO.sub.2 ;
- (2) reacting the compound Z--NHNO.sub.2 with ammonia under anhydrous conditions to produce a salt of the formula Z--NNO.sub.2.sup.- NH.sub.4.sup.+ ;
- (3) nitrating the salt Z--NNO.sub.2.sup.- NH.sub.4.sup.+ and then treating the reaction mixture with ammonia to produce ammonium dinitramide, ammonium nitrate, and regenerate the compound Z--NH.sub.2, and
- (4) isolating the product ammonium dinitramide;
- wherein Z is --COOCH.sub.2 CH.sub.3, or --COOCH.sub.3.
The process of step 1 wherein acetyl nitrate is used to nitrate the Z--NH.sub.2 compound in step (1).
Dependencies are inferred from the claim text.