Thermally stable nonazide automotive airbag propellants

C - Chemistry – Metallurgy – 06 – D

Patent

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C06D 5/00 (2006.01) B60R 21/02 (2006.01) C06B 31/32 (2006.01) C06B 47/08 (2006.01) C06D 5/06 (2006.01)

Patent

CA 2260144

Thermally stable gas generant compositions incorporate a combination of nitroguanidine, one or more nonazide high-nitrogen fuels, and phase-stabilized ammonium nitrate or a similar nonmetallic oxidizer that, upon combustion, result in a greater yield of gaseous products per mass unit of gas generant, a reduced yield of solid combustion products, and acceptable bum rates, thermal stability, and ballistic properties. These compositions are especially suitable for inflating air bags in passenger-restraint devices.

Des compositions d'agent générant du gaz thermostables comprennent une combinaison de nitroguanidine, d'un ou plusieurs combustibles non-azide à teneur élevée en azote, et d'un nitrate d'ammonium stabilisé en phase ou d'un agent d'oxydation non métallique similaire qui, lors d'une combustion, produit un rendement supérieur de produits gazeux par unité massique d'agent générateur de gaz, un faible rendement de produits de combustion solides et des propriétés acceptables de vitesse de combustion, de stabilité thermique et balistique. Ces compositions sont particulièrement appropriées au gonflage de coussins gonflables de sécurité dans des dispositifs de retenue de passagers.

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