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:
Oct. 30, 2007
Filed:
Aug. 06, 2003
R. Scott Hamilton, Bear River City, UT (US);
Vincent Mancini, Ogden, UT (US);
Clint Nelson, Perry, UT (US);
Sharon Yeung Dressen, Ogden, UT (US);
R. Scott Hamilton, Bear River City, UT (US);
Vincent Mancini, Ogden, UT (US);
Clint Nelson, Perry, UT (US);
Sharon Yeung Dressen, Ogden, UT (US);
Alliant Techsystems Inc., Edina, MN (US);
Abstract
A method of crystallizing an epsilon-polymorph of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.00]-dodecane (CL-20). The method comprises combining the CL-20, at least one organic solvent, and at least one nonsolvent to form a crystallization solution. The crystallization solution is saturated and heated to a temperature greater than about 60° C., such as from about 71° C. to about 94° C. The organic solvent is removed from the crystallization solution while retaining a sufficient amount of the nonsolvent to crystallize the CL-20 as the epsilon-polymorph. The nonsolvent is separated from the epsilon-polymorph of CL-20. A composition of CL-20 comprising the epsilon-polymorph having a particle density of 2.035 g/ml is also disclosed.