EP0950040A2 - Reduction non catalytique selective (sncr) des effluents gazeux toxiques des gonfleurs d'air bags - Google Patents
Reduction non catalytique selective (sncr) des effluents gazeux toxiques des gonfleurs d'air bagsInfo
- Publication number
- EP0950040A2 EP0950040A2 EP97937077A EP97937077A EP0950040A2 EP 0950040 A2 EP0950040 A2 EP 0950040A2 EP 97937077 A EP97937077 A EP 97937077A EP 97937077 A EP97937077 A EP 97937077A EP 0950040 A2 EP0950040 A2 EP 0950040A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ammonium
- selective non
- gas
- gas generant
- catalytic reducing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
- C06B23/02—Compositions characterised by non-explosive or non-thermic constituents for neutralising poisonous gases from explosives produced during blasting
-
- 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
-
- 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
Definitions
- the present invention relates generally to inflatable occupant safety restraints in motor vehicles, and more particularly to reducing the toxicity of effluent gases produced by nonazide gas generating compositions.
- the present invention comprises a nonazide gas generant composition, and a separate NO x reducing agent (SNCR) chemical that liberates NH 2 radical upon thermal decomposition and/or reaction with 0 2 .
- NO x gases generated from the combustion of the gas generant such as NO and N0 2 , selectively react with the NH 2 radicals, or NH 3 and 0 2 , thereby producing a harmless gas of N 2 .
- a corresponding reduction in CO is an incidental benefit with the use of some of the reducing agents, such as (NH 4 ) 2 S0 4 .
- the chemistry of the SNCR chemical is noninvasive and will not interfere with the expected performance or stability of a gas generant combustion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT (S .
- N0 2 is generated by NO, a reduction in NO necessarily causes an overall N0 X reduction within the inflator gas.
- the critical parameters for the successful implementation of SNCR in any system are the reaction temperature, NH 2 radical/NO ratio, mixing, residence time, and initial NO level.
- the presence of oxygen (0 2 ) is critical when the SNCR chemical is ammonia or an ammonium compounds.
- the SNCR chemical is a noninvasive composition whereby the normal combustion reaction of the gas generant is not interrupted or significantly altered.
- the present invention is illustrated by the following examples. EXAMPLE 1
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Air Bags (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US69595496A | 1996-08-12 | 1996-08-12 | |
US695954 | 1996-08-12 | ||
PCT/US1997/013501 WO1998006682A2 (fr) | 1996-08-12 | 1997-07-31 | Reduction non catalytique selective (sncr) des effluents gazeux toxiques des gonfleurs d'air bags |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0950040A2 true EP0950040A2 (fr) | 1999-10-20 |
EP0950040A4 EP0950040A4 (fr) | 1999-12-22 |
Family
ID=24795123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97937077A Withdrawn EP0950040A4 (fr) | 1996-08-12 | 1997-07-31 | Reduction non catalytique selective (sncr) des effluents gazeux toxiques des gonfleurs d'air bags |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0950040A4 (fr) |
JP (1) | JP3426250B2 (fr) |
KR (1) | KR19990037956A (fr) |
AU (1) | AU3967997A (fr) |
CA (1) | CA2261969A1 (fr) |
WO (1) | WO1998006682A2 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6332404B1 (en) | 1996-04-15 | 2001-12-25 | Autoliv Asp, Inc. | Airbag inflation gas generation via a dissociating material and the moderation thereof |
US7575648B1 (en) * | 1996-08-12 | 2009-08-18 | Automotive Systems Laboratory, Inc. | Selective non-catalytic reduction (SNCR) of toxic gaseous effluents |
CN1253538A (zh) * | 1997-05-02 | 2000-05-17 | 狄纳米特诺贝尔爆炸材料和系统技术股份有限公司 | 降低烟火反应的气体混合物中的有害气体 |
US6651565B1 (en) | 1998-04-20 | 2003-11-25 | Daicel Chemical Industries, Ltd. | Method of reducing NOx |
US6634302B1 (en) | 2000-02-02 | 2003-10-21 | Autoliv Asp, Inc. | Airbag inflation gas generation |
US6673173B1 (en) | 2000-02-02 | 2004-01-06 | Autoliv Asp. Inc. | Gas generation with reduced NOx formation |
JP2002302010A (ja) | 2001-04-04 | 2002-10-15 | Daicel Chem Ind Ltd | ハイブリッドインフレータの窒素酸化物の低減法 |
DE102004001625B4 (de) * | 2004-01-12 | 2014-02-13 | Trw Airbag Systems Gmbh | Verfahren zum Aufblasen eines Gassacks und Gassackmodul zur Verwendung in dem Verfahren |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0519485A1 (fr) * | 1991-06-21 | 1992-12-23 | Dynamit Nobel Aktiengesellschaft | Propellent pour générateurs de gaz |
WO1996026169A1 (fr) * | 1995-02-18 | 1996-08-29 | Dynamit Nobel Gmbh | Melanges generateurs de gaz |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3721102A (en) * | 1969-12-04 | 1973-03-20 | Rocket Research Corp | Cool working gas generator |
US3715131A (en) * | 1971-06-04 | 1973-02-06 | Hercules Inc | Chemical gas generating device for an automobile safety system |
US3785674A (en) * | 1971-06-14 | 1974-01-15 | Rocket Research Corp | Crash restraint nitrogen generating inflation system |
US3797854A (en) * | 1971-06-14 | 1974-03-19 | Rocket Research Corp | Crash restraint air generating inflation system |
US5682014A (en) * | 1993-08-02 | 1997-10-28 | Thiokol Corporation | Bitetrazoleamine gas generant compositions |
US5538567A (en) * | 1994-03-18 | 1996-07-23 | Olin Corporation | Gas generating propellant |
US5460668A (en) * | 1994-07-11 | 1995-10-24 | Automotive Systems Laboratory, Inc. | Nonazide gas generating compositions with reduced toxicity upon combustion |
-
1997
- 1997-07-31 EP EP97937077A patent/EP0950040A4/fr not_active Withdrawn
- 1997-07-31 AU AU39679/97A patent/AU3967997A/en not_active Abandoned
- 1997-07-31 JP JP50978998A patent/JP3426250B2/ja not_active Expired - Fee Related
- 1997-07-31 CA CA002261969A patent/CA2261969A1/fr not_active Abandoned
- 1997-07-31 WO PCT/US1997/013501 patent/WO1998006682A2/fr not_active Application Discontinuation
-
1999
- 1999-02-12 KR KR1019997001228A patent/KR19990037956A/ko not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0519485A1 (fr) * | 1991-06-21 | 1992-12-23 | Dynamit Nobel Aktiengesellschaft | Propellent pour générateurs de gaz |
WO1996026169A1 (fr) * | 1995-02-18 | 1996-08-29 | Dynamit Nobel Gmbh | Melanges generateurs de gaz |
Non-Patent Citations (1)
Title |
---|
See also references of WO9806682A2 * |
Also Published As
Publication number | Publication date |
---|---|
AU3967997A (en) | 1998-03-06 |
WO1998006682A2 (fr) | 1998-02-19 |
JP2000514395A (ja) | 2000-10-31 |
EP0950040A4 (fr) | 1999-12-22 |
JP3426250B2 (ja) | 2003-07-14 |
CA2261969A1 (fr) | 1998-02-19 |
WO1998006682A3 (fr) | 1998-07-09 |
KR19990037956A (ko) | 1999-05-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19990215 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KHANDHADIA, PARESH, S. Inventor name: MOQUIN, LARRY, A. Inventor name: BURNS, SEAN, P. |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 19991105 |
|
AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): DE FR GB |
|
RIC1 | Information provided on ipc code assigned before grant |
Free format text: 6C 06D 5/00 A, 6B 60R 21/00 B, 6C 06D 5/06 B |
|
17Q | First examination report despatched |
Effective date: 20010727 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20080201 |