The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 2021
Filed:
Oct. 17, 2019
U.s. Government As Represented BY the Secretary of the Army, Dover, NJ (US);
R. Hunter Muir, Middletown, CT (US);
Andrew G. Pearsall, East Lyme, CT (US);
Jerry S. Salan, East Lyme, CT (US);
Matthew L. Jorgensen, East Lyme, CT (US);
Jon G. Bragg, Essex, CT (US);
Neha Mehta, Succasunna, NJ (US);
John W. Fronabarger, Sun Lakes, AZ (US);
Jason B. Pattison, Phoenix, AZ (US);
Lily F. W. Walsh, Phoenix, AZ (US);
U.S. Government as Represented by the Secretary of the Army, Washington, DC (US);
Abstract
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.