Extrudable gas generant

Inactive Publication Date: 2006-12-28
AUTOLIV ASP INC
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014] A general object of the invention is to

Problems solved by technology

The prior art generally fails to provide gas generant compositions that facilitate or otherwise permit the inclusion of one or more perchlorate additives while simultaneously inhibiting the formation or otherwise reducing the amounts or levels of undesirable effluents such as carbon monoxide, ammonia, nitrogen dioxide and nitric oxi

Method used

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  • Extrudable gas generant
  • Extrudable gas generant

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Example

[0080] Comparative Example 3, Comparative Example 4, and Example 1 were prepared by slurry mixing the guanidine nitrate, the copper-containing compounds and the aluminum oxide. The resulting slurry was spray dried to form a powder precursor. The powder precursor was dry blended with the guar gum and, for Example 1, the ammonium perchlorate. The dry blend mixture was wetted with water, dried and granulated. The resulting granulated mixture was then appropriately tableted using common tableting processing.

[0081] The burn rate data, as shown in TABLE 1 above, was obtained by first pressing samples of the respective gas generant compositions into the shape or form of a 0.5 inch diameter cylinder. Typically, enough composition was used to result in a cylinder length of 0.5 inch. The cylinders were then each coated on all surfaces except the top surface with a krylon ignition inhibitor to help ensure a linear burn in the test apparatus. In each case, the so-coated cylinders were placed i...

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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.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation-in-part of U.S. applications, Ser. No. 10 / 899,452, filed on 26 Jul. 2004 and Ser. No. 10 / 899,451, also filed on 26 Jul. 2004 and which in turn is a continuation-in-part of U.S. application, Ser. No. 10 / 627,433, filed on 25 Jul. 2003. These co-pending parent applications are hereby incorporated by reference herein in their entirety and are made a part hereof, including but not limited to those portions which specifically appear hereinafter.BACKGROUND OF THE INVENTION [0002] This invention relates generally to materials for use in gas generation such as for forming an inflation gas such as for inflating inflatable devices such as airbag cushions included in automobile inflatable restraint systems and, more particularly, to extrudable, perchlorate-containing gas generant compositions which produce or result in gaseous effluents having reduced levels of various undesirable constituents and which are conduc...

Claims

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Application Information

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IPC IPC(8): C06B45/10
CPCC06D5/06C06B45/10
InventorMENDENHALL, IVAN V.TAYLOR, ROBERT D.
OwnerAUTOLIV ASP INC