ISSN:
0721-3115
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
The derivatisation of diphenylamine (DPA) in single base gun propellants was studied as a function of aging at 80°C. The relative proportions of 2-nitro DPA and 4-nitro DPA varied from 32 : 68 to 63 : 37 according to propellant type. Preferences for para substitution were seen in experimental lots “stabilized” with 2-nitroDPA, 4-nitroDPA and N-nitrosoDPA. Increasing water content resulted in higher preferences for ortho substitution. 4-NitroDPA is a better stabilizer than 2-nitroDPA. Model studies performed using nitro substituted N-nitrosamines show that para substitution is preferred in boiling acetic acid. Mechanisms for the conversion of N-nitrosamines into isomeric nitro derivatives are discussed with relation to the model studies and the behaviour in propellants. Detailed experimental procedures are given for the preparation of N-nitrosamines.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prep.19900150509
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