Abstract:
N,N-Bis(2-fluoro-2,2-dinitroethyl) amine is reacted with methyl, ethyl, or-propyl chlorothiolformate in the presence of titanium tetrachloride to give the intermediate S-methyl, S-ethyl or S-propyl N,N-bis(2-fluoro-2,2-dinitroethyl) thiocarbamate (II), ##STR1## The thiocarbamate (II) is then refluxed with sulfuryl chloride to yield N,N-bis(2-fluoro-2,2-dinitroethyl) carbamyl chloride (I), ##STR2## which is useful as an explosive and as an intermediate for the synthesis of energetic explosive or propellant compounds.
Abstract:
2,5-Dipicrylfurans of the formula ##STR1## wherein R.sub.1 and R.sub.2 vary independently and are select from the gp consisting of H and NO.sub.2. Unsubstituted 2,5-dipicrylfuran (R.sub.1 = R.sub.2 = H) is prepared by reacting a picryl halide with a 2,5-dihalofuran. Unsubstituted 2,5-dipicrylfuran may be nitrated under selected conditions to produce either 2,5-dipicryl-3-nitrofuran (R.sub.1 = NO.sub.2, R.sub.2 = H) or 2,5-dipicryl-3,4-dinitrofuran (R.sub.1 = R.sub.2 = NO.sub.2). The 2,5-dipicrylfurans of this invention are energetic explosives possessing high thermal stability.
Abstract:
A nitrobenzodifuroxan compound having the chemical structure of: wherein two of the R1, R2, R3 and R4 comprise oxygen or are absent, and only one of R1 or R2 is present, and only one of R3 and R4 is present, and wherein x is hydrolyzed or hydrolyzable. The salt of the hydroxynitrobenzodifuroxan of this compound is useful in explosive compositions.
Abstract:
Low-smoke gas generating compositions for producing a low order pressure pulse use a salt or complex of a triazolyl-tetrazinyl-triazine compound. The general chemical structure of the triazolyl-tetrazinyl-triazine is: wherein Z+, when present, is H+ or a cation; R1 is an electron donating group and wherein m=1, 2 or 3; t=0 or 1, and n=0, 1, 2 or 3; and when present, R is a complexing component and x=1, 2 or 3; wherein either Z or R may be absent.
Abstract:
The present invention is a process for making a 1,2,4-triazolo[4,3-a][1,3,5]triazine-3,5,7-triamine, acid salt and a process for neutralizing the acid salt to make 1,2,4-triazolo[4,3-a][1,3,5]triazine-3,5,7-triamine. 1,2,4-triazolo[4,3-a][1,3,5]triazine-3,5,7-triamine can be used as a precursor for ingredients in propellants, explosives, pyrotechnics, gas generators, pharmaceuticals, and azo dyes. The general process involves ring closure of 2,4-diamino-6-hydrazino-s-triazine with an acid and a chemical of the general formula RCN where the R comprises a leaving group, then neutralizing said acid.
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.
Abstract:
1,3,4-Oxadiazoles of the formula ##STR1## are prepared by cyclization (dehydration) of the corresponding diacylhydines of the formula R.sub.1 C(O)NHNHC(O)R.sub.2 with phosphorous pentachloride or phosphorous oxychloride wherein R.sub.1 is --CF.sub.2 CF.sub.2 CF.sub.2 SF.sub.5, --CF.sub.2 CF.sub.2 SF.sub.5, or --CH.sub.2 SF.sub.5 and R.sub.2 is --CH.sub.2 CH.sub.2 C(NO.sub.2).sub.3, --CH.sub.2 CH.sub.2 C(NO.sub.2).sub.2 F, --CF.sub.2 CF.sub.2 CF.sub.3, --CF.sub.2 CF.sub.3, --CF.sub.3, or --CH.sub.2 SF.sub.5. The compounds are useful as plasticizers.
Abstract:
A method of preparing difluoroformals of the formula(RCH.sub.2 O).sub.2 CF.sub.2,wherein R is --C(NO.sub.2).sub.3, --CF(NO.sub.2).sub.2, --CF.sub.2 (NO.su), --C(NO.sub.2).sub.2 CH.sub.3, or a fluoroalkyl group such as --CF.sub.3 or --CF.sub.2 CF.sub.3, by reacting the corresponding dichloroformals with hydrogen fluoride in pyridine. These difluoroformals are useful as energetic explosive and propellant ingredients.
Abstract:
A nitrate ester which is 2,4,6-trinitro-1-(2-hydroxyethylamino)-3- (2-hydyethylnitramino)benzenedinitrate; 2,4,6-trinitro-1,3,5-tris(2-hydroxyethylamino)benzenetrinitrate; 2,2',4,4',6,6'-hexanitro-3-(2-hydroxyethylnitramino)stilbenitrate; 2,5-bis[3-(hydroxyethylaminonitrate)-2,4,6-trinitrophenyl]1,3,4-oxadiazole; or 2,5-bis[3-(hydroxyethylaminonitrate)-5- (hydroxyethylnitraminonitrate)-2,4,6-trinitrophenyl]-1,3,4-oxiazole and a process for preparing these compounds.