Process of reducing shock sensitivity of explosive nitramine com

Details Process of reducing shock sensitivity of explosive nitramine com Process of reducing shock sensitivity of explosive nitramine com

1991-05-20

1992-03-24

Bond, Robert T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

544215, C07D25106, C07D25102

Patent

active

050990080

ABSTRACT:
A process for producing very-fine crystals of a nitramine explosive selec from HMX and RDX or mixtures thereof, said crystals having a positive surface charge and being sufficiently stable to shock and to impact to meet military standards as well as having acceptable explosive power and having desirable high density. Said process comprising modifying said crystals with pyrrolidone by treating nitramine explosives selected from cyclotetramethylene tetranitramine (HMX) and cyclotrimethylene trinitramine (RDX) and mixtures thereof by (1) dissolving the nitramine in a solution of polyvinyl pyrrolidone in N-methyl-2-pyrrolidone, (2) precipitating the resulting polyvinyl pyrrolidone-modified nitramine crystals into cold water, which optionally contains the suspending agent, arabinogallactan, and in the case of HMX, beta seed crystals, (3) filtering the resulting suspension, (4) treating the resulting filter cake with a solution of polyvinyl pyrrolidone in 95% ethanol, filtering and drying the resulting filter cake at about 80.degree. C.-90.degree. C. to remove the ethanol and water to promote crystal density and, in the case of HMX, to convert the gamma polymorph to the denser beta polymorph and (5) recovering the resulting modified very-fine crystals of nitramine explosive.

REFERENCES:
patent: 4900819 (1990-02-01), Ericsson et al.

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