Cool burning gas generating material for a vehicle occupant protection apparatus
View Patent ↗A gas generating material ( 140 ) for use in a vehicle occupant protection apparatus ( 10 ) comprises about 5% to about 20% by weight of the gas generating material, of a binder, 0 to about 50%, by weight of the gas generating material, of an energetic fuel, and an amount of oxidizer effective to oxygen balance the gas generating material. More than 50% by weight of the oxidizer is basic copper nitrate. The binder comprises at least about 20% by volume of the gas generating material.
1. An extruded solid composite gas generating material for use in a vehicle occupant protection apparatus comprising:
about 5% to about 20% by weight of the gas generating material, of a mixture of cellulose acetate butyrate and butyl nitratoethylnitramine
0 to about 50%, by weight of the gas generating material, of an energetic fuel with a low heat of heat of combustion; and
an amount of oxidizer effective to oxygen balance the gas generating material;
wherein more than 50% by weight of the oxidizer is basic copper nitrate.
2. The gas generating material of claim 1 wherein the energetic fuel comprises guanidine nitrate, hexamine cobalt (III) nitrate, or mixtures thereof.
3. The gas generating material of claim 2 wherein the energetic fuel comprises about 20% to about 40% by weight of the gas generating material.
4. The gas generating material of claim 3 wherein the oxidizer further comprises a mixture of sodium nitrate and ammonium perchlorate.