Nonazide gas generating compositions with reduced toxicity upon combustion
First Claim
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1. A nonazide gas generating composition that forms gases upon combustion useful for inflating a vehicle occupant safety restraint device comprising:
- a nonazide fuel;
an oxidizer; and
a heat absorbing additive comprising a powdered glass compound having a softening point in excess of approximately 590°
C. (1094°
F.) for absorbing heat upon combustion of said fuel so as to reduce the combustion temperature thereof;
provided that the heat absorbing additive is selected from the group consisting of PYREX, VYCOR compounds, alkaline earth aluminosilicate, aluminosilicate, baria alumina borosilicate, and barium alumino borosilicate.
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Abstract
Nonazide gas generating compositions are formed from a nonazide fuel, an oxidizer, and a heat absorbing additive in the form of a glass compound. The additive effects a reduction in the combustion temperature of the gas generant, thereby resulting in inflating gases having a reduced content of toxic gases such as NOx and CO. The gas generants are therefore nontoxic and useful for inflating a vehicle occupant restraint system.
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Citations
6 Claims
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1. A nonazide gas generating composition that forms gases upon combustion useful for inflating a vehicle occupant safety restraint device comprising:
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a nonazide fuel; an oxidizer; and a heat absorbing additive comprising a powdered glass compound having a softening point in excess of approximately 590°
C. (1094°
F.) for absorbing heat upon combustion of said fuel so as to reduce the combustion temperature thereof;
provided that the heat absorbing additive is selected from the group consisting of PYREX, VYCOR compounds, alkaline earth aluminosilicate, aluminosilicate, baria alumina borosilicate, and barium alumino borosilicate. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification