Gas-generating compositions and methods for their use are provided. Metal complexes are used as gas-generating compositions. These complexes are comprised of a metal cation template, a neutral ligand containing hydrogen and nitrogen, and sufficient oxidizing anion to balance the charge of the comple
Gas-generating compositions and methods for their use are provided. Metal complexes are used as gas-generating compositions. These complexes are comprised of a metal cation template, a neutral ligand containing hydrogen and nitrogen, and sufficient oxidizing anion to balance the charge of the complex. The complexes are formulated such that when the complex combusts, nitrogen gas and water vapor is produced. Specific examples of such complexes include metal nitrite amine, metal nitrate amine, and metal perchlorate amine complexes, as well as hydrazine complexes. A binder and co-oxidizer can be combined with the metal complexes to improve crush strength of the gas-generating compositions and to permit efficient combustion of the binder. Such gas-generating compositions are adaptable for use in gas-generating devices, such as automobile air bags.
대표청구항▼
1. A gas-generating composition, comprising: at least one metal complex comprising a metal cation, an ammonia ligand, and an oxidizing anion; andat least one of cupric oxide and strontium nitrate. 2. The gas-generating composition of claim 1, wherein the gas-generating composition comprises from abo
1. A gas-generating composition, comprising: at least one metal complex comprising a metal cation, an ammonia ligand, and an oxidizing anion; andat least one of cupric oxide and strontium nitrate. 2. The gas-generating composition of claim 1, wherein the gas-generating composition comprises from about 48.5% by weight to less than about 100% by weight of the at least one metal complex. 3. The gas-generating composition of claim 1, wherein the metal cation is a cation selected from the group consisting of chromium, cobalt, copper, iridium, magnesium, manganese, nickel, palladium, platinum, rhodium, ruthenium, tin, titanium, and zinc. 4. The gas-generating composition of claim 1, wherein the oxidizing anion is an anion selected from the group consisting of nitrate, nitrite, chlorate, perchlorate, peroxide, and superoxide. 5. The gas-generating composition of claim 1, wherein the at least one metal complex is selected from the group consisting of a metal nitrite ammine, a metal nitrate ammine, and a metal perchlorate ammine. 6. The gas-generating composition of claim 1, wherein the at least one metal complex comprises hexaamminecobalt(III) nitrate. 7. The gas-generating composition of claim 1, wherein the gas-generating composition comprises cupric oxide and strontium nitrate. 8. The gas-generating composition of claim 1, further comprising a silicon oxide. 9. The gas-generating composition of claim 1, further comprising an alkaline earth oxide. 10. The gas-generating composition of claim 1, further comprising another metal oxide. 11. The gas-generating composition of claim 1, further comprising a binder. 12. The gas-generating composition of claim 1, further comprising a secondary fuel. 13. A gas-generating composition, comprising: at least one metal ammine complex comprising a metal cation coordinated with ammonia and an oxidizing anion; andat least one of cupric oxide and strontium nitrate. 14. The gas-generating composition of claim 13, wherein the at least one metal ammine complex comprises hexaamminecobalt(III) nitrate. 15. The gas-generating composition of claim 13, wherein the gas-generating composition comprises at least about 48.5% by weight of the at least one metal ammine complex. 16. A gas-generating composition comprising hexaamminecobalt(III) nitrate, cupric oxide, and strontium nitrate. 17. The gas-generating composition of claim 16, wherein the gas-generating composition comprises at least about 48.5% by weight of the at least one metal ammine complex. 18. A gas-generating composition, comprising: at least one metal complex consisting of a metal cation, an ammonia ligand, and an oxidizing anion; andat least one of cupric oxide and strontium nitrate.
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