Organic compounds -- part of the class 532-570 series – Organic compounds – Unsubstituted hydrocarbyl chain between the ring and the -c-...
Reexamination Certificate
2006-01-31
2006-01-31
Coleman, Brenda (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Unsubstituted hydrocarbyl chain between the ring and the -c-...
C540S554000, C540S556000, C149S092000
Reexamination Certificate
active
06992185
ABSTRACT:
A method is provided in which 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,903,11]-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.
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Alliant Techsystems Inc.
Coleman Brenda
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