C - Chemistry – Metallurgy – 06 – D
Patent
C - Chemistry, Metallurgy
06
D
C06D 5/06 (2006.01) C06B 35/00 (2006.01)
Patent
CA 2076614
Gas generant pyrotechnic compositions especially suitable for inflating vehicle occupant restraint systems with nitrogen gas are described. The compositions are comprised (in wt.%) of about 65-74% of an azide, preferably sodium azide; about 17-29.5% of iron oxide, preferably ferric oxide; and about 1.0- 6% metal nitrite or nitrate co-oxidizer, preferably sodium nitrate; to which base composition is added about 0.5-8% silica, alumina, titania or mixtures thereof; up to 6% bentonite and up to 4% molybdenum disulfide. Preferred driver and passenger side formulations are disclosed. The compositions burn at a rate of from about 0.8 to 1.5 inches per second, and have excellent slag and clinker properties, as well as excellent aging and mechanical strength characteristics when formed into cylindrical pellets or wafers. The formulation ingredients are amenable to water slurry mixing, spray drying and machine pressing into cylindrical pellets or wafers for insertion into a suitable gas generating device.
Huntsman Lewis R.
Taylor Robert D.
Autoliv Asp Inc.
Gowling Lafleur Henderson Llp
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