WO2008076441A1 - Composition d'autocompression/de surpression - Google Patents
Composition d'autocompression/de surpression Download PDFInfo
- Publication number
- WO2008076441A1 WO2008076441A1 PCT/US2007/025892 US2007025892W WO2008076441A1 WO 2008076441 A1 WO2008076441 A1 WO 2008076441A1 US 2007025892 W US2007025892 W US 2007025892W WO 2008076441 A1 WO2008076441 A1 WO 2008076441A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- composition
- aminotetrazole
- azoles
- salts
- additive
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06D—MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART)
- C06D5/00—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets
- C06D5/06—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets by reaction of two or more solids
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C9/00—Chemical contact igniters; Chemical lighters
Definitions
- the present invention relates generally to gas generating systems, and to autoignition and booster compositions employed in gas generator devices for automotive restraint systems, for example.
- the present invention relates to autoignition compositions that upon ignition provide the flame front and pressure front necessary to safely ignite gas generant compositions in combustible communication therewith.
- gas generators are typically provided with an autoignition composition that in the event of a fire ignites responsive to a desired threshold temperature. As a result, the gas generant is ignited prior to melting for example, thereby safely igniting the main gas generant composition to inhibit or prevent the likelihood of an explosive event once the gas generant begins to combust.
- compositions are provided to serve correspondingly discrete functions. These compositions often include a primary gas generating composition that when combusted is employed to provide sufficient quantities of gaseous products to operate the associated restraint device, such as an airbag or seatbelt pretensioner.
- a booster composition is utilized to elevate the pressure and heat within the gas generator prior to combustion of the primary gas generant, thereby creating favorable conditions within the inflator for acceptable combustion of the primary gas generant.
- the auto-ignition composition employed to provide safe combustion of the other compositions in the event of a fire.
- the auto-ignition composition is designed to ignite at temperatures below the melting point of the primary gas generant for example, thereby ensuring the controlled combustion of the primary gas generant, as opposed to an explosive reaction perhaps.
- compositions containing cellulose acetate butyrate (CAB), nitroguanidine (NQ), and potassium perchlorate (KP) as gas generant compositions are known. These compositions provide relatively large amounts of gas and relatively small amounts of solids upon combustion. However, the ignition temperature is over 500 degrees Celsius. Seatbelt pretensioners utilizing this composition disassemble when subjected to DOT and BAM rapid heating tests. Even so, this composition is desirable given the relatively cheap costs and also because of the large amounts of gas produced. It would therefore be an improvement in the art to stabilize the ignition and combustion of a CAB composition to make it useful in smaller micro gas generators used in seatbelt devices, for example.
- CAB cellulose acetate butyrate
- NQ nitroguanidine
- KP potassium perchlorate
- gas generating systems including an autoignition/booster composition containing a first oxidizer selected from metal perchlorates, such as potassium perchlorate, at about 10- 90 weight percent of the composition, and a fuel component of CAB and NQ that when taken together are provided at about 10-90 weight percent of the composition.
- a first additive of molybdenum trioxide is provided at about 0.1-3 wt% of the total composition.
- any compound that would liberate molybdenum trioxide in the same relative molar/weight amounts during combustion may also be provided as the first additive.
- a second additive of 5- aminotetrazole is provided at about 0.1-5 wt% of the total composition.
- any azole-based fuel including metal salts of azole compounds, and azole compounds such as aminotetrazole, tetrazole, 5-nitrotetrazole, 5-nitroaminotetrazole, and bitetrazole, may be included in the same weight percent range, or, in the same molar- effective amounts.
- triazole-based compounds including 1 ,2,4-triazole- 5-one or 3-nitro-l,2,4-triazole-5-one and metal salts of these compounds may also.be employed either singularly or in conjunction with the tetrazole-based compounds in the same weight percent range, or in the same molar-effective amounts.
- guanidine nitrate, aminoguanidine nitrate, triaminoguanidine nitrate, nitroguanidine, dicyandiamide, triazalone, nitrotriazalone, and mixtures thereof may also be employed either singularly or in conjunction with tetrazole-based and/or triazole-based compounds in the same weight percent range of about 0.1-5 weight percent when taken as a whole, or in the same molar-effective amounts as the azole- based second additive.
- a gas generator and a vehicle occupant protection system incorporating the autoignition system are also included.
- a seat belt device as known in the art may also contain a composition as described above may also be included.
- FIG. 1 is a cross-sectional side view showing the general structure of an inflator in accordance with the present invention.
- FIG. 2 is a schematic representation of an exemplary vehicle occupant restraint system containing a gas generant composition in accordance with the present invention.
- a primary fuel component is provided containing cellulose acetate butyrate (CAB) and nitroguanidine (NQ).
- the primary fuel component is provided at about 10-90 wt% of the gas generant composition.
- Each fuel constituent of the primary fuel component may generally be provided at about 5-95 wt% relative to the weight of the primary fuel component.
- a first additive selected from molybdenum trioxide, molybdic acid, ammonium molybdate, sodium molybdate, phosphomolybdic acid, ammonium phosphomolybdate, and sodium phosphomolybdate, is provided at about 0.1-3 weight percent (wt%).
- a second additive is selected from one or more secondary fuels including tetrazoles such as 5-aminotetrazole; metal salts of azoles such as potassium 5- aminotetrazole; nonmetal salts of azoles such as diammonium salt of 5,5 '-bis- IH- tetrazole: nitrate salts of azoles such as 5-aminotetrazole; nitramine derivatives of azoles such as 5-aminotetrazole; metal salts of nitramine derivatives of azoles such as dipotassium 5-aminotetrazole; metal salts of nitramine derivatives of azoles such as dipotassium 5-aminotetrazole; nonmetal salts of nitramine derivatives of azoles such as monoammonium 5-aminotetrazole; triazole-based compounds including 1 ,2,4- triazole-5
- An oxidizer component is selected from metal perchlorates, such as potassium perchlorate at about 10-90 wt% of the composition.
- compositions of the present invention are formed from constituents as provided by known suppliers such as Aldrich or Fisher Chemical companies.
- the compositions may be provided in granulated form and dry-mixed and compacted in a known manner, or otherwise mixed as known in the art.
- the compositions may be employed in gas generators typically found in airbag devices or occupant protection systems, or in safety belt devices, or in gas generating systems such as a vehicle occupant protection system, all manufactured as known in the art, or as appreciated by one of ordinary skill.
- an exemplary inflator or gas generating system 10 incorporates a dual chamber design to tailor containing an autoignition/booster composition 12 formed as described herein, may be manufactured as known in the art.
- U.S. Patent Nos. 6,422,601, 6,805,377, 6,659,500, 6,749,219, and 6,752,421 exemplify typical airbag inflator designs and are each incorporated herein by reference in their entirety.
- Airbag system 200 includes at least one airbag 202 and an inflator 10 containing a gas generant composition 12 in accordance with the present invention, coupled to airbag 202 so as to enable fluid communication with an interior of the airbag.
- Airbag system 200 may also include (or be in communication with) a crash event sensor 210.
- Crash event sensor 210 includes a known crash sensor algorithm that signals actuation of airbag system 200 via, for example, activation of airbag inflator 10 in the event of a collision.
- FIG. 2 shows a schematic diagram of one exemplary embodiment of such a restraint system.
- Safety belt assembly 150 includes a safety belt housing 152 and a safety belt 100 extending from housing 152.
- a safety belt retractor mechanism 154 (for example, a spring-loaded mechanism) may be coupled to an end portion of the belt.
- a safety belt pretensioner 156 containing gas generating/auto ignition composition 12 may be coupled to belt retractor mechanism 154 to actuate the retractor mechanism in the event of a collision.
- Typical seat belt retractor mechanisms which may be used in conjunction with the safety belt embodiments of the present invention are described in U.S. Pat. Nos. 5,743,480, 5,553,803, 5,667,161, 5,451,008, 4,558,832 and 4,597,546, incorporated herein by reference.
- Illustrative examples of typical pretensioners with which the safety belt embodiments of the present invention may be combined are described in U.S. Pat. Nos. 6,505,790 and 6,419,177, incorporated herein by reference.
- Safety belt assembly 150 may also include (or be in communication with) a crash event sensor 158 (for example, an inertia sensor or an accelerometer) including a known crash sensor algorithm that signals actuation of belt pretensioner 156 via, for example, activation of a pyrotechnic igniter (not shown) incorporated into the pretensioner.
- a crash event sensor 158 for example, an inertia sensor or an accelerometer
- U.S. Pat. Nos. 6,505,790 and 6,419,177 previously incorporated herein by reference, provide illustrative examples of pretensioners actuated in such a manner.
- safety belt assembly 150 airbag system 200, and more broadly, vehicle occupant protection system 180 exemplify but do not limit vehicle occupant protection systems contemplated in accordance with the present invention.
- vehicle occupant protection system 180 exemplify but do not limit vehicle occupant protection systems contemplated in accordance with the present invention.
- the preceding is merely a detailed description of various embodiments of this invention and that numerous changes to the disclosed embodiments can be made in accordance with the disclosure herein without departing from the scope of the invention. The preceding description, therefore, is not meant to limit the scope of the invention. Rather, the scope of the invention is to be determined only by the appended claims and their equivalents.
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112007002820T DE112007002820T5 (de) | 2006-12-15 | 2007-12-17 | Selbstzündungs-/Booster-Zusammensetzung |
JP2009541423A JP2010513186A (ja) | 2006-12-15 | 2007-12-17 | 自己発火/ブースター組成物 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US87530006P | 2006-12-15 | 2006-12-15 | |
US60/875,300 | 2006-12-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008076441A1 true WO2008076441A1 (fr) | 2008-06-26 |
Family
ID=39536638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/025892 WO2008076441A1 (fr) | 2006-12-15 | 2007-12-17 | Composition d'autocompression/de surpression |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080149232A1 (fr) |
JP (1) | JP2010513186A (fr) |
DE (1) | DE112007002820T5 (fr) |
WO (1) | WO2008076441A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2483050C2 (ru) * | 2011-07-26 | 2013-05-27 | Федеральное государственное унитарное предприятие "Российский Федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики" - ФГУП "РФЯЦ-ВНИИЭФ" | Пиротехнический состав |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112006001782T5 (de) * | 2005-06-30 | 2008-05-29 | Automotive Systems Laboratory, Inc., Armada | Selbstzündungszusammensetzungen |
US20070034307A1 (en) * | 2005-07-29 | 2007-02-15 | Hordos Deborah L | Autoignition/booster composition |
US9162933B1 (en) | 2007-04-24 | 2015-10-20 | Tk Holding Inc. | Auto-ignition composition |
US9556078B1 (en) | 2008-04-07 | 2017-01-31 | Tk Holdings Inc. | Gas generator |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5380380A (en) * | 1994-02-09 | 1995-01-10 | Automotive Systems Laboratory, Inc. | Ignition compositions for inflator gas generators |
US5854442A (en) * | 1995-03-31 | 1998-12-29 | Atlantic Research Corporation | Gas generator compositions |
US20030024618A1 (en) * | 2000-02-04 | 2003-02-06 | Jianzhou Wu | Gas-generating agent composition comprising triazine derivative |
US20040232679A1 (en) * | 2001-08-09 | 2004-11-25 | Dairi Kubo | Gas generator |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
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GB644073A (en) * | 1947-10-10 | 1950-10-04 | Ici Ltd | Improvements in and relating to solid gas-generating charges |
US3558285A (en) * | 1969-10-01 | 1971-01-26 | Us Army | Propellant gas generator |
US3711115A (en) * | 1970-11-24 | 1973-01-16 | Allied Chem | Pyrotechnic gas generator |
US3862866A (en) * | 1971-08-02 | 1975-01-28 | Specialty Products Dev Corp | Gas generator composition and method |
US3785149A (en) * | 1972-06-08 | 1974-01-15 | Specialty Prod Dev Corp | Method for filling a bag with water vapor and carbon dioxide gas |
US3787010A (en) * | 1973-04-06 | 1974-01-22 | Us Army | Inflating apparatus |
DE3215925C2 (de) | 1982-04-29 | 1985-11-28 | Bayern-Chemie Gesellschaft für flugchemische Antriebe mbH, 8261 Aschau | Aufwickelvorrichtung mit Rückstrammer für Sicherheitsgurte |
CA1221074A (fr) | 1982-11-29 | 1987-04-28 | Takayuki Ando | Rappel de sangle |
JPH0624294A (ja) | 1992-07-08 | 1994-02-01 | Takata Kk | シートベルト装置のプリテンショナ |
US5553803A (en) | 1994-09-13 | 1996-09-10 | Takata Vehicle Safety Technology Gmbh | Belt tensioner for safety belts for motor vehicles |
DE4432594A1 (de) | 1994-09-13 | 1996-03-14 | Takata Europ Gmbh | Gurtstraffer bei Sicherheitsgurtanordnungen in Kraftfahrzeugen |
DE19503150A1 (de) | 1995-02-01 | 1996-08-08 | Takata Europ Gmbh | Einen Gurtstraffer aufweisende Sicherheitsgurtanordnung in Kraftfahrzeugen |
WO1999043633A1 (fr) * | 1998-02-25 | 1999-09-02 | Nippon Kayaku Kabushiki-Kaisha | Composition generatrice de gaz |
WO2000068043A1 (fr) | 1999-05-11 | 2000-11-16 | Automotive Systems Laboratory, Inc. | Dispositif de gonflage possedant deux chambres |
US6419177B2 (en) | 2000-02-04 | 2002-07-16 | Automotive Systems Laboratory, Inc. | Seat belt pretensioner |
JP2004501019A (ja) | 2000-05-02 | 2004-01-15 | オートモーティブ システムズ ラボラトリー インコーポレーテッド | インフレータ |
US6659500B2 (en) | 2000-05-11 | 2003-12-09 | Automotive Systems Laboratory, Inc. | Multi-chamber inflator |
US6505790B2 (en) | 2000-06-05 | 2003-01-14 | Automotive Systems Laboratory, Inc. | Pretensioner device |
US6591752B2 (en) * | 2001-02-12 | 2003-07-15 | Trw Inc. | Ignition material for an igniter |
US6749219B2 (en) | 2001-09-12 | 2004-06-15 | Automotive Systems Laboratory | Inflator |
JP4215163B2 (ja) | 2002-01-03 | 2009-01-28 | オートモーティブ システムズ ラボラトリー インコーポレーテッド | エアバッグインフレータ |
DE112006001782T5 (de) * | 2005-06-30 | 2008-05-29 | Automotive Systems Laboratory, Inc., Armada | Selbstzündungszusammensetzungen |
-
2007
- 2007-12-17 WO PCT/US2007/025892 patent/WO2008076441A1/fr active Application Filing
- 2007-12-17 US US12/002,701 patent/US20080149232A1/en not_active Abandoned
- 2007-12-17 DE DE112007002820T patent/DE112007002820T5/de not_active Withdrawn
- 2007-12-17 JP JP2009541423A patent/JP2010513186A/ja not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5380380A (en) * | 1994-02-09 | 1995-01-10 | Automotive Systems Laboratory, Inc. | Ignition compositions for inflator gas generators |
US5854442A (en) * | 1995-03-31 | 1998-12-29 | Atlantic Research Corporation | Gas generator compositions |
US20030024618A1 (en) * | 2000-02-04 | 2003-02-06 | Jianzhou Wu | Gas-generating agent composition comprising triazine derivative |
US20040232679A1 (en) * | 2001-08-09 | 2004-11-25 | Dairi Kubo | Gas generator |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2483050C2 (ru) * | 2011-07-26 | 2013-05-27 | Федеральное государственное унитарное предприятие "Российский Федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики" - ФГУП "РФЯЦ-ВНИИЭФ" | Пиротехнический состав |
Also Published As
Publication number | Publication date |
---|---|
US20080149232A1 (en) | 2008-06-26 |
DE112007002820T5 (de) | 2009-10-22 |
JP2010513186A (ja) | 2010-04-30 |
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