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. 31, 2006
Filed:
Jan. 09, 2002
Crystallization of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,903,11]-dodecane
Applicant:
R. Scott Hamilton, Bear River City, UT (US);
Inventor:
R. Scott Hamilton, Bear River City, UT (US);
Assignee:
Alliant Techsystems Inc., Edina, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 255/00 (2006.01); C06B 25/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method is provided in which 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.00]-dodecane (CL-20 or HNIW) is crystallized to its ε-polymorph by an inverse precipitation technique. A dry CL-20 solvent solution containing an amount of CL-20 dissolved in a CL-20 solvent is prepared. The dry solvent solution is added to a crystallizer containing a CL-20 non-solvent to cause precipitation of epsilon polymorph CL-20 crystals by the inverse precipitation technique. The precipitated epsilon polymorph CL-20 crystals are separated from the non-solvent and the solvent.