Compositions comprising ammonium nitrate double salts

C - Chemistry – Metallurgy – 05 – C

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C05C 1/00 (2006.01) C05C 11/00 (2006.01) C05G 1/06 (2006.01)

Patent

CA 2636468

Preferred aspects of the present invention provide ammonium nitrate compositions comprising ammonium nitrate and at least a second compound, said second compound being present under conditions and in amounts effective to substantially reduce the detonation sensitivity of the composition and/or to otherwise improve a desired property of the composition. In certain embodiments, the second compound is selected from the group consisting of ammonium sulfate, ammonium phosphate, calcium nitrate, potassium nitrate, magnesium nitrate, ammonium molybdenate, ammonium hexaflouralsilicate, neodymium hydroxynitrate, and combinations of two or more of these. In preferred embodiments, at least a substantial portion of the ammonium nitrate in the composition is in the form of a double salt with one or more of said second compounds. In highly preferred embodiments, the present compositions consist essentially of one or more double salts of ammonium nitrate and a second compound as described herein.

Les aspects préférés de l'invention concernent des compositions de nitrate d'ammonium qui contiennent du nitrate d'ammonium et au moins un second composé, ce second composé étant présent dans des conditions et dans des quantités permettant de réduire sensiblement la sensibilité de la composition à la détonation et/ou d'améliorer d'une autre manière une propriété souhaitable de la composition. Dans certaines formes de réalisation, le second composé est choisi dans le groupe constitué par le sulfate d'ammonium, le phosphate d'ammonium, le nitrate de calcium, le nitrate de potassium, le nitrate de magnésium, le molybdénate d'ammonium, l'hexafluorosilicate d'ammonium, l'hydroxynitrate de néodymium ainsi que des combinaisons d'au moins deux de ces composés. Dans les formes de réalisation préférées, au moins une proportion importante du nitrate d'ammonium de la composition est présente sous forme d'un double sel, associé à un ou plusieurs seconds composés. Les formes de réalisation préférées de ces compositions comprennent principalement un ou plusieurs doubles sels de nitrate d'ammonium et un second composé tel que ceux décrits.

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