Crystallization method for HMX and RDX

Details Crystallization method for HMX and RDX Crystallization method for HMX and RDX

1985-03-26

1987-01-20

Raymond, Richard L.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

540475, C07D25159, C07D22502

Patent

active

046380655

ABSTRACT:
The present invention relates to a method for the recrystallization of the high explosives HMX and RDX. According to the invention, the explosive is dissolved in a low molecular weight, liquid (at room temperature) lactone, after which the degree of saturation of the solution obtained, is changed by either lowering the temperature or by diluting with water.
This method produces, depending on the crystallization method chosen, .beta.-HMX crystals or RDX crystals of either 50-1500 .mu.m or 5-50 .mu.m median particle diameter respectively.

REFERENCES:
patent: 2434230 (1948-06-01), Schiessler et al.
patent: 2656355 (1953-10-01), Bachmann
patent: 2959587 (1960-11-01), Johnson et al.
I&EC Product Research and Development 4, 1965 by George, et al., "Solvates of Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX)", pp. 209-214.

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