Pacific Scientific Energetic Materials Company

US Government as Represented by the Secretary of the Army

Jason B Pattison

John William Fronabarger

Jon G Bragg

Lily F W Walsh

Michael D Williams

Neha Mehta

Jerry S Salan

Matthew L Jorgensen

Andrew G Pearsall

R Hunter Muir

Robert Holderman

Described are energetic compositions formed of a 5,5′-bistetrazole salt and a perchlorate salt, in which the energetic composition is a co-precipitated product. The 5,5′-bistetrazole salt and the perchlorate salt can be dipotassium 5,5′-bistetrazole and potassium perchlorate. The energetic composition can have a particle size distribution between 1-50 micron and/or a mean volume diameter of less than 30 micron. In a low energy electro-explosive device, an ignition element is at least partially surrounded by an acceptor formed of this energetic composition, and the ignition element can be a bridgewire, a thin film bridge, a semiconductor bridge, or a reactive semiconductor bridge.

Non-conductive pyrotechnic mixture

The present invention is directed to a method for preparing 5-nitrotetrazolate using a strongly acidic ionic cation exchange resin that has improve yields over prior art methods. The methods disclosed herein can be used either in a batch process or continuous flow reactor. In one exemplary process, starting material sodium 5-aminotetrazolate in solution is added into a reaction vessel containing a strongly acidic ionic cation exchange resin to facilitate production of 5-nitrotetrazolate. Multiple reactors containing resins may be connected in series to improve 5-nitrotetrazolate yields and purity levels.

Method for preparing sodium nitrotetrazolate using cation exchange resin

Described are methods for purifying a 5-nitrotetrazolate solution with a copper(II) modified cation exchange resin. The method can be performed as a stand-alone system or as a system integrated into a continuous flow reactor.

Purification of flow sodium 5-nitrotetrazolate solutions with copper modified cation exchange resin

Described are methods for preparing salts of 5-nitrotetrazolate that include reacting aqueous solutions of 5-aminotetrazole, an acid, and sodium nitrite in a continuous flow system at an ambient temperature.

Facile method for preparation of sodium 5-nitrotetrazolate using a flow system

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Phoenix, AZ, United States of America

Jason B Pattison