Extrudable gas generant
First Claim
1. An extrudable gas generant composition comprising:
- at least one non-azide, organic, nitrogen-containing fuel;
at least one copper-containing compound selected from the group consisting of basic copper nitrate, cupric oxide, a copper diammine dinitrate-ammonium nitrate mixture wherein ammonium nitrate is present in the mixture in a range of about 3 to about 90 weight percent, copper diammine bitetrazole, a copper-nitrate complex resulting from reaction of 5-aminotetrazole with basic copper nitrate, and combinations thereof;
a perchlorate additive comprising at least one perchlorate material selected from the group consisting of alkali metal perchlorates and ammonium perchlorate, the perchlorate additive present in a relative amount effective to result in a gaseous effluent, when the gas generant composition is combusted, having a reduced content of at least one species selected from the group consisting of carbon monoxide, ammonia, nitrogen dioxide and nitric oxide, as compared to a same gas generant composition free of the perchlorate additive; and
a polymeric binder material effective to render the gas generant composition extrudable.
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Accused Products
Abstract
Extrudable gas generant compositions which, upon combustion, produce or result in an improved effluent and related methods for generating inflation gas for use in an inflatable restraint system are provided. Such extrudable gas generant compositions include a non-azide, organic, nitrogen-containing fuel, at least one copper-containing compound, a perchlorate additive and a polymeric binder material. The at least one copper-containing compound may be selected from basic copper nitrate, cupric oxide, a copper dianunine-ammonium-nitrate mixture wherein the ammonium nitrate is present in the mixture in a range of about 3 to about 90 weight percent, and/or a copper-nitrate complex resulting from reaction of 5-aminotetrazole with basic copper nitrate. The perchlorate additive is present in an amount effective to result in a gaseous effluent, when the gas generant composition is combusted, having a reduced content of at least one species selected from carbon monoxide, ammonia, nitrogen dioxide and nitric oxide, as compared to a same gas generant free from the perchlorate additive. The polymeric binder material is effective to render the gas generant composition extrudable.
40 Citations
21 Claims
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1. An extrudable gas generant composition comprising:
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at least one non-azide, organic, nitrogen-containing fuel;
at least one copper-containing compound selected from the group consisting of basic copper nitrate, cupric oxide, a copper diammine dinitrate-ammonium nitrate mixture wherein ammonium nitrate is present in the mixture in a range of about 3 to about 90 weight percent, copper diammine bitetrazole, a copper-nitrate complex resulting from reaction of 5-aminotetrazole with basic copper nitrate, and combinations thereof;
a perchlorate additive comprising at least one perchlorate material selected from the group consisting of alkali metal perchlorates and ammonium perchlorate, the perchlorate additive present in a relative amount effective to result in a gaseous effluent, when the gas generant composition is combusted, having a reduced content of at least one species selected from the group consisting of carbon monoxide, ammonia, nitrogen dioxide and nitric oxide, as compared to a same gas generant composition free of the perchlorate additive; and
a polymeric binder material effective to render the gas generant composition extrudable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An extrudable gas generant composition comprising:
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at least one non-azide, organic, nitrogen-containing fuel present in a relative amount of 5 to 60 composition weight percent;
at least one copper-containing compound selected from the group consisting of basic copper nitrate, cupric oxide, copper diammine dinitrate-ammonium nitrate mixture wherein ammonium nitrate is present in the mixture in a range of about 3 to about 90 weight percent, copper diammine bitetrazole, a copper-nitrate complex resulting from reaction of 5-aminotetrazole with basic copper nitrate, and combinations thereof, the at least one copper-containing compound present in a relative amount of 10 to 80 composition weight percent;
a perchlorate additive comprising at least one perchlorate material selected from the group consisting of alkali metal perchlorates and ammonium perchlorate, the perchlorate additive, present in a relative amount of 1 to 10 composition weight percent, effective to result in a gaseous effluent, when the gas generant composition is combusted, having a reduced content of at least one species selected from the group consisting of carbon monoxide, ammonia, nitrogen dioxide and nitric oxide, as compared to a same gas generant composition free of the perchlorate additive; and
a polymeric binder material present in a relative amount of 1 to 20 composition weight percent and effective to render the gas generant composition extrudable, the polymeric binder material selected from the group of cellulosic materials, natural gums, polyacrylates, polyacrylamides, polyurethanes, polybutadienes, polystyrenes, polyvinyl alcohols, polyvinyl acetates, silicones and combinations of two or more thereof. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An extrudable gas generant composition comprising:
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5 to 60 composition weight percent guanidine nitrate;
10 to 80 composition weight percent of a combination of at least one copper-containing compound selected from the group consisting of basic copper nitrate, cupric oxide, a copper diammine dinitrate-ammonium nitrate mixture wherein the ammonium nitrate is present in the mixture in a range of about 3 to about 90 weight percent, copper diammine bitetrazole, a copper-nitrate complex resulting from reaction of 5-aminotetrazole with basic copper nitrate, and combinations thereof;
1 to 10 composition weight percent of a perchlorate additive comprising at least one perchlorate material selected from the group consisting of alkali metal perchlorates and ammonium perchlorate; and
1 to 20 composition weight percent of polymeric binder material effective to render the gas generant composition extrudable, wherein the polymeric binder material is selected from the group consisting of cellulosic materials, natural gums, polyacrylates, polyacrylamides, polyurethanes, polybutadienes, polystyrenes, polyvinyl alcohols, polyvinyl acetates, silicones and combinations of two or more thereof.
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Specification