Pyrotechnic smoke obscurants containing metal-organic frameworks and composites thereof

US10717685B1 · kind B1 · utility

Assignee

• The United States of America as represented by the Secretary of the Army · US

Inventors

• Amee L Polk · Havre de Grace, US
• Zachary B Zander · Havre de Grace, US
• Danielle L Kuhn · Edgewood, US
• Gregory W. Peterson · Bel Air, US
• Jared B. DeCoste · Bel Air, US

Key dates

• Filing date: Apr 18, 2019
• Grant date: Jul 21, 2020
• Expiry date: Apr 18, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F42B12/48
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

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.