Gas generating compositions
First Claim
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1. A combustible gas generating composition consisting essentially of:
- a fuel as a first component, an oxidant as a second component, and a coolant as a third component, and optionally other ingredients for burn rate enhancement, lubricity, or physical strength, wherein;
the first component is selected from the group consisting of calcium cyanamide, sodium hydrogen cyanamide, and mixtures thereof, said first component comprising from about 27 percent to about 35 percent by weight of the total combined weight of said first, second and third components; and
the second component comprises sodium nitrate, said second component comprising from about 43 percent to about 55 percent by weight of the total combined weight of said first, second, and third components; and
the third component is selected from the group consisting of hydrated aluminum oxide, aluminum oxide, calcium hydroxide, and mixtures thereof, said third component comprising from about 10 percent to about 30 percent by weight of the total combined weight of said first, second, and third components.
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Abstract
Gas generating compositions comprising a cyanamide compound and an oxidant therefor. The compositions produce non-toxic, low temperature gases which are especially useful for inflating vehicle passive restraint crash bags.
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Citations
21 Claims
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1. A combustible gas generating composition consisting essentially of:
a fuel as a first component, an oxidant as a second component, and a coolant as a third component, and optionally other ingredients for burn rate enhancement, lubricity, or physical strength, wherein; the first component is selected from the group consisting of calcium cyanamide, sodium hydrogen cyanamide, and mixtures thereof, said first component comprising from about 27 percent to about 35 percent by weight of the total combined weight of said first, second and third components; and the second component comprises sodium nitrate, said second component comprising from about 43 percent to about 55 percent by weight of the total combined weight of said first, second, and third components; and the third component is selected from the group consisting of hydrated aluminum oxide, aluminum oxide, calcium hydroxide, and mixtures thereof, said third component comprising from about 10 percent to about 30 percent by weight of the total combined weight of said first, second, and third components. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A combustible gas generating composition consisting essentially of a fuel as a first component, an oxidant as a second component, and a coolant as a third component, and optionally other ingredients for burn rate enhancement, lubricity, or physical strength, wherein:
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(a) the first component is selected from the group consisting of calcium cyanamide, sodium hydrogen cyanamide, and mixtures thereof, said first component comprising about 31 percent by weight of the total combined weight of the first, second and third components; (b) the second component comprises sodium nitrate, said second component comprising about 50 percent by weight of the total combined weight of the first, second, and third components; and (c) the third component is selected from the group consisting of hydrated aluminum oxide, aluminum oxide, calcium hydroxide, and mixtures thereof, said third component comprising about 19 percent by weight of the total weight of the first, second, and third components. - View Dependent Claims (9, 10, 11, 12)
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13. A combustible gas generating composition consisting essentially of:
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a first component selected from the group consisting of calcium cyanamide, sodium hydrogen cyanamide, and mixtures thereof; a second component selected from the group consisting of alkali metal and alkaline earth metal nitrates, nitrites, chlorates, and perchlorates in a quantity sufficiently near a stoichiometric ratio relative to the first component to generate the non-toxic gases upon combustion; and a third component selected from the group consisting of hydrated aluminum oxide, aluminum oxide, calcium hydroxide, and mixtures thereof; and
optionallyother ingredients for burn rate enhancement, lubricity, or physical strength. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A combustible gas generating composition consisting essentially of:
a first component, a second component, and a third component, wherein; the first component is sodium hydrogen cyanamide; the second component is an oxidant selected from the group consisting of; ammonium, alkali metal, alkaline earth metal, magnesium and aluminum nitrates, nitrites, chlorates, perchlorates, and manganates;
iron, nickel and copper oxides;
alkaline earth metal peroxides and mixtures thereof; andthe third component is a compound selected from the group consisting of hydrated aluminum oxide, aluminum oxide, calcium hydroxide, and mixtures thereof; and
optionallyother ingredients for burn rate enhancement, lubricity, or physical strength. - View Dependent Claims (20, 21)
Specification