Thermally stable booster explosive and process for manufacture

Details Thermally stable booster explosive and process for manufacture Thermally stable booster explosive and process for manufacture

2007-03-20

2007-03-20

McKane, Joseph K. (Department: 1626)

Explosive and thermic compositions or charges

Structure or arrangement of component or product

C149S017000, C548S421000

Reexamination Certificate

active

11305051

ABSTRACT:
A thermally stable booster explosive and process for the manufacture of the explosive. The product explosive is 2,4,7,9-tetranitro-10H-benzo[4,5]furo[3,2-b]indole (TNBFI). A reactant/solvent such as n-methylpyrrolidone (NMP) or dimethyl formamide (DMF) is made slightly basic. The solution is heated to reduce the water content. The solution is cooled and hexanitrostilbene is added. The solution is heated to a predetermined temperature for a specific time period, cooled, and the product is collected by filtration.

REFERENCES:
patent: 6288099 (2001-09-01), Antane et al.
patent: 6391902 (2002-05-01), Antane et al.
Kinsley, et al. “Formation of osazones during attempted Fischer indole synthesis” J. of the Chemical Soc., pp. 4814-4817 (1956).
Cornforth et al., “Indoles. V. Coumarono (3,2b)indole and derivatives” Journal and Proceedings of the Royal Society of New South Wales, vol. 71, 486-493 (1938).
Cawley et al. “Action of nitric acid on derivatives of coumarono (2′,3′,3,3)indole” Journal of the Chemical Society, 1214-1218 (1938.
Schroeder et al., “Benzofuro[3,2-b]indoles” J. Org. Chem. (1962), 27, 586-591.

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