Patent · US Active

Precipitation method and synthesis method of 2,6-diamino-3,5-dinitropyrazine-1-oxide

US10836731B2 · kind B2 · utility

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17Claims

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Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Eric Pasquinet · Saint-Avertin, FR
Anne Wuillaume · Tours, FR
Nicolas Pin · Rodez, FR
Arnaud Beaucamp · La Riche, FR
Christelle Barthet · Grenoble, FR

Key dates

Filing date	Feb 26, 2018
Grant date	Nov 17, 2020
Priority date	—
Expiry date	Feb 26, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07B2200/13
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for precipitating as particles 2,6-diamino-3,5-dinitropyrazine-1-oxide (or ANPZO) present in an acid medium, which comprises adding the acid medium to an aqueous solution and which is characterized in that the aqueous solution comprises a nitrate salt. Further disclosed is a method for synthesizing ANPZO implementing this precipitation method. The synthesis method comprises converting 2,6-diaminopyrazine-1-oxide (or DAPO) into ANPZO by nitration in an acid medium, and then precipitating as particles the ANPZO by adding the acid medium to an aqueous solution, and is characterized in that the aqueous solution comprises a nitrate salt.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.