Accession Number : ADD014879

Title :   Bis(dinitropropyl) Formal/Dinitrobutyl Dinitropropyl Formal Plasticizer.

Descriptive Note : Patent, Filed 22 May 84, patented 5 Mar 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Adolph, Horst G

Report Date : 05 Mar 1991

Pagination or Media Count : 3

Abstract : BDNPF/A is a useful energetic (nitro)plasticizer of relatively low cost which has found application in propellant and explosive binders. BDNPF/A is a 1:1 eutectic mixture of bis(dinitropropyl)formal (BDNPF) and bis(dinitropropyl) acetal (BDNPA) BDNPB/A is an excellent plasticizer for polyurethanes, polyethylene glycols (PEG), and cellulose acetate butyrates (CAB); it has a low melting point (about 12 C.) and a low vapor pressure. A significant shortcoming of this material is the limited chemical and thermal stability of BDNPA. Thus, when heated separately at 150 C. in vacuo for 48 hours, BDNPF remains essentially unchanged whereas BDNPA decomposes to the extent of at least 30% with formation of new solid and liquid products which in turn undergo further decomposition BDNPA is also more sensitive to acid hydrolysis than BDNPF. These undesirable properties of BDPNA are also exhibited by its eutectic mixture with BDNPF and adversely affect the utility of this plasticizer.

Descriptors :   ACIDS, BINDERS, BUTYRATES, CELLULOSE ACETATES, CHEMICALS, DECOMPOSITION, EUTECTICS, EXPLOSIVES, GLYCOLS, HYDROLYSIS, LIQUIDS, LOW COSTS, LOW PRESSURE, MELTING POINT, MIXTURES, PLASTICIZERS, POLYETHYLENE, POLYURETHANE RESINS, SENSITIVITY, SOLIDS, STABILITY, THERMAL STABILITY, VAPOR PRESSURE

Subject Categories : Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE