Nonazide gas generating compositions with a built-in catalyst

Details Nonazide gas generating compositions with a built-in catalyst Nonazide gas generating compositions with a built-in catalyst

C - Chemistry, Metallurgy

06

D

C06D 5/06 (2006.01)

Patent

CA 2190167

Nonazide gas generating compositions are formed from a nonazide fuel, an oxidizer, a slag former, and a built-in catalyst comprising an alkali metal, alkaline earth metal, or transition metal salt of tetrazoles, bitetrazoles, and triazoles, or a transition metal oxide. The built-in catalyst promotes the conversion of nitrogen oxides (NOx) and carbon monoxide to nitrogen gas (N2) and carbon dioxide, respectively. The gas generants are therefore nontoxic and useful for inflating a vehicle occupant restraint system.

Ces compositions renferment un combustible non azide, un combourant, un moule de laitier et un catalyseur incorporé qui comporte un métal alcalin, un métal alcalino-terreux, ou un sel de métal de transition de tétrazoles, des bitétrazoles et des triazoles, ou bien un oxyde de métal de transition. Le catalyseur incorporé contribue à la transformation des oxydes d'azote (NO¿x?) et du monoxyde de carbone en azote gazeux N¿2? et en dioxyde de carbone, respectivement. En conséquence, les compositions décrites dans l'invention sont non toxiques et utiles pour le gonflage de systèmes de retenue des occupants de véhicules à moteur.

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