Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2008-07-22
2008-07-22
Saeed, Kamal (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
11151178
ABSTRACT:
A process for making energetic urethane 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 recrystallization or 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. Embodiments of the present invention further include the monomers produced by the processes described herein.
REFERENCES:
Copending U.S. Appl. No. 11/151,180 (same applicant).
National Institute of Standards and Technology 1H-Tetrazole data sheet, Feb. 26, 2008, 1 pg, http://webbook.nist.gov/chemisrty.
Chafin Andrew
Fallis Stephen
Hollins Richard
Irvin David J.
Mason Mark H.
Chung Susannah
Drazich Brian F.
Haley Charlene A.
Saeed Kamal
The United States of America as represented by the Secretary of
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