Gas evolving material contg. di:nitrogen mon:oxide and a fuel - useful as a gas generator for air bags in motor vehicles

摘要

A gas evolving material (I) for a gas generator comprises a liquefied gas mixt. of one or more gas forming fuels (II) chosen from ethers, olefins, ammonia and/or hydrogen and dinitrogen monoxide (III). Also claimed is the use of (I) in a gas generator for the prodn. of impellent or pressurised gas by ignition from an ignition source. USE/ADVANTAGE - (I) is useful for seat belt tightness or for the inflation of air bags in motor vehicles. (I) do not produce dust or wider particles on combustion that could damage an air bag and do not require the use of highly compressed gas or air. In an example, a mixt. of 70 wt.% carbon dioxide or xenon, 28.7 wt.% dinitrogen monoxide and 1.3 wt.% hydrogen exhibited a pressure of 50 bar at room temp. for a loading density of 0.3 g/ml. Upon combustion, the mixt. fulfilled the requirements of pressure and time for an air bag generator. The reaction prods. were nitrogen and water when xenon was used as the inert gas.