Azide-free gas generant composition with easily filterable combustion products
First Claim
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1. A pyrotechnic, combustion filterable slag-particles forming gas generating mixture useful for inflating an automobile or aircraft safety crash bag, said pyrotechnic mixture comprising at least one material of each of the following functional groups of materials:
- a. A fuel selected from the group of azole compounds consisting of triazole aminotetrazole, tetrazole, bitetrazole and metal salts of these compounds,b. An oxygen containing oxidizer compound selected from the group consisting of alkali metal, alkaline earth metal, lanthanide and ammonium nitrates and perchlorates or from the group consisting of alkali metal and alkaline earth metal chlorates and peroxides,c. A high temperature slag forming material selected from the group consisting of alkaline earth metal oxides, hydroxides, cabonates, and oxalates,d. A low-temperature slag forming material which is sufficient in amount during combustion to cause the solid combustion particles to coalesce into easily filterable slag or clinkers but not so much as to make a low viscosity liquid, selected from the group consisting of silicon dioxide, boric oxide and vanadium pentoxide or from the group consisting of alkali metal silicates, borates, and carbonates or from the group consisting of naturally occurring clays and talcs.
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Abstract
A gas generant composition devoid of azides which yields solid combustion products which are easily filtered rendering the gases useful for inflating automobile occupant restraint bags.
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Citations
15 Claims
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1. A pyrotechnic, combustion filterable slag-particles forming gas generating mixture useful for inflating an automobile or aircraft safety crash bag, said pyrotechnic mixture comprising at least one material of each of the following functional groups of materials:
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a. A fuel selected from the group of azole compounds consisting of triazole aminotetrazole, tetrazole, bitetrazole and metal salts of these compounds, b. An oxygen containing oxidizer compound selected from the group consisting of alkali metal, alkaline earth metal, lanthanide and ammonium nitrates and perchlorates or from the group consisting of alkali metal and alkaline earth metal chlorates and peroxides, c. A high temperature slag forming material selected from the group consisting of alkaline earth metal oxides, hydroxides, cabonates, and oxalates, d. A low-temperature slag forming material which is sufficient in amount during combustion to cause the solid combustion particles to coalesce into easily filterable slag or clinkers but not so much as to make a low viscosity liquid, selected from the group consisting of silicon dioxide, boric oxide and vanadium pentoxide or from the group consisting of alkali metal silicates, borates, and carbonates or from the group consisting of naturally occurring clays and talcs. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A slag forming gas generating composition for an inflatable occupant restraint system comprising a mixture of:
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(a) about 22 to about 36 percent by weight of 5-aminotetrazole, (b) about 38 to about 62 percent by weight of strontium nitrate, and (c) about 2 to about 18 percent by weight of silicon dioxide.
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9. A slag forming gas generating composition for an inflatable occupant restraint system comprising a mixture of:
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(a) about 22 to about 36 percent by weight of 5-aminotetrazole, (b) about 38 to about 62 percent by weight of strontium nitrate, and (c) about 2 to about 18 percent by weight of clay.
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10. A slag forming gas generating composition for an inflatable occupant restraint system comprising a mixture of:
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(a) about 22 to about 36 percent by weight of 5-aminotetrazole, (b) about 38 to about 62 percent by weight of strontium nitrate, and (c) about 2 to about 18 percent by weight of boric acid.
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11. A slag forming gas generating composition for an inflatable occupant restraint system comprising a mixture of:
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(a) about 22 to about 30 percent by weight of 5-aminotetrazole, (b) about 10 to about 40 percent by weight of iron oxide, (c) about 30 to about 50 percent by weight of sodium nitrate, and (d) about 2 to about 20 percent by weight of silicon dioxide.
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12. A slag forming gas generating composition for an inflatable occupant restraint system comprising a mixture of:
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(a) about 22 to about 36 percent by weight of 5-aminotetrazole, (b) about 8 to about 62 percent by weight of strontium nitrate, (c) about 0 to about 42 percent by weight of sodium nitrate, and (d) about 2 to about 18 percent by weight of silicon dioxide.
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13. A slag forming gas generating composition for an inflatable occupant restraint system comprising a mixture of:
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(a) about 22 to about 36 percent by weight of 5-aminotetrazole, (b) about 30 to about 50 percent by weight of sodium nitrate, (c) about 8 to about 30 percent by weight of magnesium carbonate, and (d) about 2 to about 20 percent by weight of silicon dioxide.
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14. A slag forming gas generating composition for an inflatable occupant restraint system comprising a mixture of:
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(a) about 22 to about 36 percent by weight of 5-aminotetrazole, (b) about 30 to about 50 percent by weight of sodium nitrate, (c) about 8 to about 30 percent by weight of magnesium hydroxide, and (d) about 2 to about 20 percent by weight of silicon dioxide.
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15. A slag forming gas generating composition for an inflatable occupant restraint system comprising a mixture of:
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(a) about 20 to about 34 percent by weight of 1,2, 4-triazole-5-one, (b) about 40 to about 78 percent by weight of strontium nitrate, and (c) about 2 to about 20 percent by weight of silicon dioxide.
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Specification