Gas generant compositions methods of production of the same and devices made therefrom
First Claim
1. A gas generating composition comprising:
- a fuel source comprising a compound having a fuel portion and a fuel oxidizing portion;
a fuel oxidizer; and
,a dodecahydrododecoborate salt catalyst of the oxidation of said fuel portion by said fuel oxidizing portion and said fuel oxidizer to produce gaseous reaction products.
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Accused Products
Abstract
Gas generant compositions are disclosed that generally include an a fuel source including a compound having a fuel portion and a fuel oxidizing portion, a fuel oxidizer, and a borohydride catalyst of the oxidation of said fuel portion by said fuel oxidizing portion and said fuel oxidizer to produce gaseous reaction products. In preferred compositions the fuel source is comprised of the elements nitrogen, carbon, hydrogen and water and combusted to produce N2, CO2 and H2 O as the primary reaction products. Preferably, the fuel oxidizer is a metal nitrate, and particularly potassium nitrate, because the potassium will generally be included in solid products and not in the form of a potentially harmful gas. It is also preferred that the combustion reaction be catalyzed using borohydrides. Potassium borohydrides, such as K2 B12 H12 and K2 B10 H10, are particularly preferred. In addition, binding materials, and dry lubricants or processing aids are included, when compositions are used in pellet or tablet form. The compositions detailed in this invention react at relatively high rates and they produce large quantities of gas within fractions of seconds. In addition, these compositions produce only small amounts of slag which are readily filterable. The gases produced are then available to perform a work function in automotive safety restraint systems such as seat belt pretensioners and automobile air bag inflators, as well as in other inflatable device applications, such as lifesaving buoying devices, life rafts and aircraft slides.
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Citations
19 Claims
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1. A gas generating composition comprising:
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a fuel source comprising a compound having a fuel portion and a fuel oxidizing portion; a fuel oxidizer; and
,a dodecahydrododecoborate salt catalyst of the oxidation of said fuel portion by said fuel oxidizing portion and said fuel oxidizer to produce gaseous reaction products. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A gas generating composition comprising:
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an initiating charge; a pickup charge; and
,an output charge consisting essentially of; a fuel source comprising a compound having a fuel portion and a fuel oxidizing portion; a fuel oxidizer; and
,a dodecahydrododecaborate salt catalyst of the oxidation of said fuel portion by said fuel oxidizing portion and said fuel oxidizer to produce gaseous reaction products. - View Dependent Claims (15, 16)
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17. A method of producing a gas generant composition comprising:
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providing ingredients for a gas generant composition consisting essentially of a fuel source comprising a compound having a fuel portion and a fuel oxidizing portion, a fuel oxidizer, and a dodecahydrododecaborate salt catalyst for the oxidation of said fuel portion by said fuel oxidizing portion and said fuel oxidizer to produce gaseous reaction products; and
,mixing the ingredients to produce the gas generant composition.
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18. A method of inflating an inflatable device comprising:
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providing in an inflatable device an effective amount of a gas generant composition to inflate the device upon ignition of the composition which consists essentially of a fuel source comprising a compound having a fuel portion and a fuel oxidizing portion, a fuel oxidizer, and a dodecahydrododecaborate salt catalyst of the oxidation of said fuel portion by said fuel oxidizing portion and said fuel oxidizer to produce gaseous reaction products; and igniting the composition. - View Dependent Claims (19)
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Specification