Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Reexamination Certificate
2011-08-30
2011-08-30
Davis, Brian J (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C564S122000
Reexamination Certificate
active
08008527
ABSTRACT:
A composition and method of manufacturing the same. Embodiments of an aspect of the invention relate to the formula C(CH2NF2)4having the name octafluoropentaerythrityltetramine (octafluoro-PETA). In embodiments of another aspect generally relate to a method for manufacturing octafluoropentaerythrityltetramine (octafluoro-PETA) including, basifying pentaerythrityltetramine tetrahydrochloride in an aqueous solution with an aqueous alkali and treating with alkyl chloroformate for producing a tetraalkyl pentaerythrityltetra carbamate, extracting the compound into a nonaqueous solvent suitable for extraction from water and removing the solvent for providing a pure form of tetraethyl pentaerythrityltetracarbamate, bubbling elemental fluorine and/or mixtures of fluorine with an inert gas through tetraalkyl pentaerythrityltetracarbamate in a solvent suitable for direct fluorinations of protected amines until excess fluorine appears, and purifying the resultant octafluoropentaerythrityltetramine.
REFERENCES:
patent: 5789617 (1998-08-01), Archibald et al.
patent: 7563889 (2009-07-01), Chapman et al.
patent: 7632943 (2009-12-01), Chapman et al.
Database CAPLUS on STN, Acc. No. 1961:13138, Gryszkiewicz-Trochimowski et al., Memorial des Poudres (1958), 40, p. 109-112 (abstract).
Database CAPLUS on STN, Acc. No. 2006:1344188, Fan et al., Journal of Molecular Structure (2006), 801(1-3), p. 55-62 (abstract).
Chapman, Robert D., N,N-Dihaloamine explosive as harmful agent defeat materials, Nov. 13, 2008, slides 1-10, US.
Chapman Robert D.
Hollins Richard A.
Davis Brian J
Haley Charlene A.
The United States of America as represented by the Secretary of
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