Process for the preparation of gas-generating compositions

Details Process for the preparation of gas-generating compositions Process for the preparation of gas-generating compositions

C - Chemistry, Metallurgy

06

D

C06D 5/00 (2006.01) C06B 21/00 (2006.01) C06D 5/06 (2006.01)

Patent

CA 2170798

A process for the production of a gas-generating composition containing a redox-couple including a water soluble azide component, for example, azide of sodium, potassium, lithium, calcium or barium, and an oxidizer component, for example, sodium nitrate, sodium perchlorate, potassium nitrate, potassium perchlorate or an oxide of iron, nickel, vanadium, copper, titanium, manganese, zinc, tantalum, silicon or aluminium, said oxidizer component being capable of reacting with said azide component to generate gas, said process comprising the steps of: forming an aqueous dispersion of the redox-couple wherein the azide component is totally dissolved and the oxidizer is uniformly dispersed and stabilised in the azide solution; passing said aqueous dispersion through a spray nozzle to form a stream of droplets; and contacting said droplets with hot air whereby the water is removed to produce solid particles of gas-generating composition.

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