Gas generant compositions
First Claim
1. A method of producing high volumes of gas to an automotive airbag during a vehicular collision and also provide for generation of high volumes of gas during vehicular fire conditions, the method comprising providing an inflator unit comprising a housing, gas generant contained within said housing, means for igniting said gas generant during a vehicular collision, and means to vent gases generated by gas generant combustion to the airbag, said gas generant comprising between about 20 and about 40 wt % of fuel, said fuel comprising a tetrazole and/or triazole compound at between about 50 and about 85 wt % of said fuel and a water-soluble fuel at between about 15 and about 50 wt % of said fuel;
- between about 20 and about 80 wt % of oxidizer, at least about 20 wt % and up to 100% of said oxidizer being a transition metal oxide or mixture of transition metal oxides, the balance of said oxidizer being an alkali and/or alkaline earth metal nitrate, chlorate, perchlorate or mixture thereof; and
, any balance comprising additional gas generant-compatible components, said gas generant autoigniting at temperatures of between about 155°
C. and about 180°
C., whereby autoignition occurs in the absence of other autoignition material.
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Accused Products
Abstract
A gas generant composition contains as a fuel a mixture of a major portion of a triazole or tetrazole and a minor portion of a water soluble fuel; and an oxidizer component, at least 20 wt % of said oxidizer component being a transition metal oxide, such as CuO. Generant compositions in accordance with the invention autoignite in a range around 170° C., providing autoignition of the generant without the need for separate autoignition devices. Also, the generant compositions are useful as autoignition pyrotechnic in autoignition devices.
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Citations
2 Claims
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1. A method of producing high volumes of gas to an automotive airbag during a vehicular collision and also provide for generation of high volumes of gas during vehicular fire conditions, the method comprising providing an inflator unit comprising a housing, gas generant contained within said housing, means for igniting said gas generant during a vehicular collision, and means to vent gases generated by gas generant combustion to the airbag, said gas generant comprising between about 20 and about 40 wt % of fuel, said fuel comprising a tetrazole and/or triazole compound at between about 50 and about 85 wt % of said fuel and a water-soluble fuel at between about 15 and about 50 wt % of said fuel;
- between about 20 and about 80 wt % of oxidizer, at least about 20 wt % and up to 100% of said oxidizer being a transition metal oxide or mixture of transition metal oxides, the balance of said oxidizer being an alkali and/or alkaline earth metal nitrate, chlorate, perchlorate or mixture thereof; and
, any balance comprising additional gas generant-compatible components, said gas generant autoigniting at temperatures of between about 155°
C. and about 180°
C., whereby autoignition occurs in the absence of other autoignition material.
- between about 20 and about 80 wt % of oxidizer, at least about 20 wt % and up to 100% of said oxidizer being a transition metal oxide or mixture of transition metal oxides, the balance of said oxidizer being an alkali and/or alkaline earth metal nitrate, chlorate, perchlorate or mixture thereof; and
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2. In an automotive airbag inflator comprising a housing, electrically ignitable squib means for generating hot gases, ignition material for producing additional hot gases disposed within said housing for ignition upon exposure to hot gases generated by said squib means, and gas generant material for producing high volumes of gases disposed within said housing for ignition upon exposure to hot gases generated by said ignition material, a method for igniting said ignition material when said housing is exposed to abnormally high temperatures, The method comprising disposing in said housing an autoignition material in thermal communication with said housing and disposed so as to ignite said ignition material when said autoignition material ignites, said autoignition material comprising between about 20 and about 40 wt % of fuel, said fuel comprising a tetrazole and/or triazole compound at between about 50 and about 85 wt % of said fuel and a water-soluble fuel at between about 15 and about 50 wt % of said fuel;
- between about 20 and about 80 wt % of oxidizer, at least about 20 wt % and up to 100% of said oxidizer being a transition metal oxide or mixture of transition metal oxides, the balance of said oxidizer being an alkali and/or alkaline earth metal nitrate, chlorate, perchlorate or mixture thereof; and
, any balance comprising additional gas generant-compatible components.
- between about 20 and about 80 wt % of oxidizer, at least about 20 wt % and up to 100% of said oxidizer being a transition metal oxide or mixture of transition metal oxides, the balance of said oxidizer being an alkali and/or alkaline earth metal nitrate, chlorate, perchlorate or mixture thereof; and
Specification
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- Resources
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Current AssigneeAutoliv ASP Incorporated (Autoliv Incorporated)
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Original AssigneeMorton International Incorporated (Autoliv Incorporated)
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InventorsJordan, Michael P., Taylor, Robert D., Barnes, Michael W., Deppert, Thomas M., Hock, Christopher, Chandler, Virginia E.
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Primary Examiner(s)Nelson, Peter A.
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Application NumberUS08/310,019Time in Patent Office293 DaysField of Search102/289, 102/290, 86/1.1US Class Current102/289CPC Class CodesC06B 23/009 Wetting agents, hydrophobin...C06D 5/06 by reaction of two or more ...
