US 10,717,685 B1Granted

Pyrotechnic smoke obscurants containing metal-organic frameworks and composites thereof

AssigneeThe United States of America as represented by the Secretary of the Army

InventorsAmee L Polk, Zachary B Zander, Danielle L Kuhn, Gregory W Peterson, Jared B DeCoste

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Abstract

A multispectral smoke obscurant composition effective in reducing transmittance in the visual, infrared, and ultraviolet regions of the electromagnetic spectrum, comprising at least one metal organic framework (“MOF”), at least one fuel, at least one oxidizer, and optionally one or more additives selected from the group consisting of binders, coolants, and accelerants. The MOF or MOF composite is present from about 10 to 90 weight percent of the smoke obscurant composition, while the fuel and the oxidizer in combination comprise about at least 10 weight percent of the smoke obscurant composition.

Claims17

Dependent claims

A multispectral smoke obscurant composition, comprising:

at least one metal organic framework (“MOF”) or MOF composite, at least one fuel, and at least one oxidizer, wherein said MOF or MOF composite is selected from the group consisting of UiO-type MOFs, MIL-type MOFs, HKUST-1, Cu-based MOFs, DMOFs, pillared MOFs, M-MOF-74, MOFs possessing TA ligands, UiO-66, UiO-66 in combination with Brass, NU-1000, Cu MOF 74, Cu(OAc)2 in combination with NU-1000, Cu(OAc)2 in combination with Cu MOF 74, UiO-66 in combination with Ag, and Cu(OAc)2 in combination with UiO-66 and mixtures thereof, and wherein said smoke obscurant is effective in reducing transmittance in the ultra violet, visible, and infrared spectrum when pyrotechnically disseminated.

Dependencies are inferred from the claim text.

Facts

Application: 16/387,733Filed 18 Apr 2019 · us provisional application
Priority: 20 Apr 2018
Granted: 21 Jul 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

C06D 7/00
Compositions for gas-attacks
C06B 23/04
Compositions characterised by non-explosive or non-thermic constituents: for cooling the explosion gases including antifouling and flash…
C06B 25/18
Compositions containing a nitrated organic compound: the compound being nitrocellulose present as 10% or more by weight of the total composition
C06B 29/02
Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate: of an alkali metal