Synthesis of Dimethylmethylene Dinitramine.
Patent filed 1 Jul 82, patented 9 Oct 84,
DEPARTMENT OF THE NAVY WASHINGTON DC
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This invention relates to propellants and more particularly to energetic nitramine plasticizers for propellants. One object of this invention is to provide an improved process for preparing 2,4-dinitro-2,4-diazapentane. Other objects of this invention are to provide a safer method of preparing 2,4-dinitro-2,4-diazapentane, to provide a more economical method of preparing 2,4-dinitro-2,4-diazapentane, and to provide a large-scale process for preparing 2,4-dinitro-2,4-diazapentane. These and other objects are accomplished by providing a process comprising the following steps in order 1 adding N,N-dimethylurea in an organic solvent e.g., methylene chloride to mixed acid which is maintained at a temperature which is above the freezing point of mixed acid up to 5 C to produce N,N-dimethyl-N,N-dinitrourea and then drowning the mixed acid solution in ice water 2 using an organic solvent to extract the N,N-dimethyl-N,N-dinitrourea from the mixed acid-water mixture 3 hydrolyzing the N,N-dimethyl-N,N-dinitrourea to form methylnitramine by adding the N,N-dimethyl-N,N-dinitrourea-organic solvent solution to water which is at a temperature of from 37 C to 100 C and 4 isolating the product methylnitramine. Keywords Patents, Evaporation, Reduction chemistry, Addition reactions. aw
- Organic Chemistry
- Industrial Chemistry and Chemical Processing
- Ammunition and Explosives