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:
Jan. 28, 2003
Filed:
Jun. 08, 2000
Andrew J. Sanderson, North Ogden, UT (US);
Robert M. Hajik, Willard, UT (US);
Thomas K. Highsmith, Ogden, UT (US);
Harold E. Johnston, Brigham City, UT (US);
Alliant Techsystems Inc., Edina, MN (US);
Abstract
A process for preparing 4,10-dinitro-2,6,8,12-tetraoxa-4,10-diazatetracyclo[5.5.0.0 ]-dodecane involves reacting at least one hexa-substituted piperazine derivative with at least one nitrate source and optionally at least one strong acid and heating the mixture to a temperature sufficient to induce an exothermic initial stage of the between the hexa-substituted piperazine derivative and the nitrate source. The mixture is maintained at a temperature in a range of at least ambient to not more than about 80° C. during the exothermic initial stage and at least a portion of a subsequent non-exothermic intermediate stage of the reaction by cooling the mixture during at least a portion of the exothermic initial stage of the reaction so that the reaction proceeds in a controlled manner. The mixture is then cooled to a temperature sufficiently low to prevent commencement of an exothermic NO autocatalytic stage.