Bis-isoxazole tetranitrate (BITN): a high-energy propellant plasticizer and melt-castable eutectic explosive ingredient

US9994532B1 · kind B1 · utility

Assignee

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

Inventors

• Jesse J. Sabatini · Bel Air, US
• Gregory W. Drake · Madison, US
• Leah A. Wingard · Landenberg, US

Key dates

• Filing date: Aug 25, 2017
• Grant date: Jun 12, 2018
• Expiry date: Aug 25, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C06B45/105
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method and compound includes mixing a salt compound to 2-butyne-1,4-diol in an alcohol to create a mixture; adding a solution of dichloroglyoxime in an alcohol to the mixture to create 3,3′-bis-isoxazole-4,4′,5,5′-tetryltetramethanol; and nitrating the 3,3′-bis-isoxazole-4,4′,5,5′-tetryltetramethanol to create 3,3′-bis-isoxazole-4,4′,5,5′-tetrylbis(methylene) tetranitrate, which has the structural formula: The alcohol may include ethanol, wherein the adding may occur at 60° C., or alternatively the adding may occur at 80° C. The alcohol may include n-butanol, wherein the adding may occur at 100° C., or alternatively the adding may occur at 120° C. The mixing may occur at 120° C. The method may further include cooling the nitrated 3,3′-bis-isoxazole-4,4′,5,5′-tetryltetramethanol to 0° C.; stirring the cooled nitrated 3,3′-bis-isoxazole-4,4′,5,5′-tetryltetramethanol for at least four hours creating a precipitate; warming the precipitate; pouring the precipitate onto ice while stirring creating a solid material; collecting the solid material; and drying the solid material to yield the 3,3′-bis-isoxazole-4,4′,5,5′-tetrylbis(methylene) tetranitrate.