Pyrotechnic compositions for gas generant apllications
First Claim
1. A pyrotechnic composition comprising:
- about 45 to about 90 weight percent cobalt III nitrate complex with ligands selected from the group consisting of ammonia and water and about 10 to about 55 weight percent of a combination of;
a) a copper complex of ethylenediamine dinitrate and b) basic copper nitrate;
wherein the composition includes the cobalt III nitrate complex in a greater relative amount than either the copper complex of ethylenediamine dinitrate or the basic copper nitrate;
the copper complex of ethylenediamine dinitrate is present in a relative amount of at least about 2 weight percent and the basic copper nitrate is present in a relative amount of at least 1.5 times the relative amount of the copper complex of ethylenediamine dinitrate.
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Accused Products
Abstract
Pyrotechnic compositions which include about 45 to about 90 weight percent of a fuel material of cobalt III nitrate complex with ammonia or water ligands, and about 10 to about 55 weight percent of a combination of a combination of a burn rate catalyst of copper bis ethylenediamine dinitrate and an oxidizer of basic copper nitrate are provided to result in relatively high gas outputs and burn rates. The compositions desirably include the cobalt III nitrate complex in a greater relative amount than either the copper complex of ethylenediamine dinitrate or the basic copper nitrate; the copper complex of ethylenediamine dinitrate is present in a relative amount of at least about 2 weight percent and the basic copper nitrate is present in a relative amount of at least 1.5 times the relative amount of the copper complex of ethylenediamine dinitrate. Also provided are corresponding or associated gas generating devices and inflatable vehicle occupant safety restraint systems.
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Citations
20 Claims
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1. A pyrotechnic composition comprising:
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about 45 to about 90 weight percent cobalt III nitrate complex with ligands selected from the group consisting of ammonia and water and about 10 to about 55 weight percent of a combination of;
a) a copper complex of ethylenediamine dinitrate and b) basic copper nitrate;
wherein the composition includes the cobalt III nitrate complex in a greater relative amount than either the copper complex of ethylenediamine dinitrate or the basic copper nitrate;
the copper complex of ethylenediamine dinitrate is present in a relative amount of at least about 2 weight percent and the basic copper nitrate is present in a relative amount of at least 1.5 times the relative amount of the copper complex of ethylenediamine dinitrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A pyrotechnic composition comprising:
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about 45 to about 90 weight percent hexammine cobalt III nitrate;
about 2 to about 20 weight percent copper bis ethylenediamine dinitrate; and
basic copper nitrate in a relative amount of at least about 1.5 times that of the copper bis ethylenediamine dinitrate, wherein the composition provides a burn rate of in excess of 0.35 ips at 1000 psi and a gas output of at least about 3.0 moles per 100 grams of the composition. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification