Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-05-27
2008-07-08
Shiao, Rei-tsang (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
07396938
ABSTRACT:
A process for making energetic cured binders by making poly-tetrazoles to produce multi-functional tetrazole polyols for producing tetrazole base polymers. Embodiments of the present invention relate generally to a process for preparation of a monomer including reacting an effective amount of nitrile(s) with inorganic azide and a divalent zinc salt in a first solvent, cooling to room temperature producing poly tetrazole, purifying the poly tetrazole by precipitation in a second solvent, and reacting an effective amount of the purified poly tetrazole with a third solvent, a soluble reversible or non-reversible base, and 2-chloro-ethanol, cooling to room temperature producing tetrazole polyol.
REFERENCES:
Copending U.S. Appl. No. 11/151,178.
National Institute of Standards and Technology 1H-Tetrazole data sheet, Feb. 26, 2008, 1 pg, http://webbook.nist.gov/chemistry.
Chafin Andrew
Fallis Stephen
Irvin David J.
Mason Mark H.
Chung Susannah
Drazich Brian F.
Haley Charlene A.
Shiao Rei-tsang
The United States of America as represented by the Secretary of
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