CN111433172A - Non-ammonium nitrate based propellants - Google Patents
Non-ammonium nitrate based propellants Download PDFInfo
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- CN111433172A CN111433172A CN201980006212.1A CN201980006212A CN111433172A CN 111433172 A CN111433172 A CN 111433172A CN 201980006212 A CN201980006212 A CN 201980006212A CN 111433172 A CN111433172 A CN 111433172A
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- Prior art keywords
- airbag
- formulation
- gas
- gas generant
- accordance
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- 239000003380 propellant Substances 0.000 title description 22
- 239000000203 mixture Substances 0.000 claims abstract description 66
- 238000009472 formulation Methods 0.000 claims abstract description 64
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 83
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Chemical compound [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 claims description 22
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 14
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 14
- IDCPFAYURAQKDZ-UHFFFAOYSA-N 1-nitroguanidine Chemical compound NC(=N)N[N+]([O-])=O IDCPFAYURAQKDZ-UHFFFAOYSA-N 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 229910001487 potassium perchlorate Inorganic materials 0.000 claims description 10
- 239000002826 coolant Substances 0.000 claims description 8
- KQAGKTURZUKUCH-UHFFFAOYSA-L strontium oxalate Chemical compound [Sr+2].[O-]C(=O)C([O-])=O KQAGKTURZUKUCH-UHFFFAOYSA-L 0.000 claims description 8
- 239000005995 Aluminium silicate Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 235000012211 aluminium silicate Nutrition 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000005751 Copper oxide Substances 0.000 claims description 4
- 229910000431 copper oxide Inorganic materials 0.000 claims description 4
- 239000003607 modifier Substances 0.000 claims description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 13
- 239000000446 fuel Substances 0.000 description 8
- 239000004615 ingredient Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 6
- 239000000945 filler Substances 0.000 description 5
- NDEMNVPZDAFUKN-UHFFFAOYSA-N guanidine;nitric acid Chemical group NC(N)=N.O[N+]([O-])=O.O[N+]([O-])=O NDEMNVPZDAFUKN-UHFFFAOYSA-N 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004449 solid propellant Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000005382 thermal cycling Methods 0.000 description 2
- ULRPISSMEBPJLN-UHFFFAOYSA-N 2h-tetrazol-5-amine Chemical compound NC1=NN=NN1 ULRPISSMEBPJLN-UHFFFAOYSA-N 0.000 description 1
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 description 1
- CUCSOENEIFDWBK-UHFFFAOYSA-N [N+](=O)([O-])NC(=N)N.[N+](=O)([O-])[O-].[K+] Chemical compound [N+](=O)([O-])NC(=N)N.[N+](=O)([O-])[O-].[K+] CUCSOENEIFDWBK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XKLJHFLUAHKGGU-UHFFFAOYSA-N nitrous amide Chemical compound ON=N XKLJHFLUAHKGGU-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/02—Compositions containing an inorganic nitrogen-oxygen salt the salt being an alkali metal or an alkaline earth metal nitrate
- C06B31/12—Compositions containing an inorganic nitrogen-oxygen salt the salt being an alkali metal or an alkaline earth metal nitrate with a nitrated organic compound
-
- 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
Abstract
The present disclosure relates to an airbag gas generant formulation optimized for a hybrid airbag inflator, and an airbag inflator, an airbag module including the airbag, and a method of inflating an airbag using the airbag gas generant.
Description
This application claims priority and benefit to U.S. provisional application 62/618,269 entitled "airbag propellant" filed on 2018, 1, 17, and incorporated herein by reference in its entirety.
Background
With the use of ammonium nitrate based propellants in automotive airbag gas generators, whether they be used in pyrotechnic gas generators or hybrid gas generators, has become unacceptable, there is a great need for a propellant that is a replacement or does not contain ammonium nitrate. Even though in hybrid gas generators the propellant is stored in a high pressure inert gas atmosphere, making it difficult for moisture to soak in, ammonium nitrate based propellants are still considered unacceptable.
Brief summary
One aspect of the present disclosure relates to a gas generant formulation. The gas generant may be used as a gas generant formulation for an airbag. A number of gas generant formulations are disclosed herein, it being understood that "formulation" or "the formulation" may refer to any one or more of the gas generant formulations or airbag gas generant formulations herein, unless otherwise indicated. That is any non-ammonium nitrate based propellant of the present disclosure.
The airbag gas generant formulation (e.g., as claimed) may be optimized for an airbag inflator, particularly a hybrid airbag inflator. One aspect is an airbag gas generant formulation comprising the following ingredients: 40 to 50 wt% strontium nitrate, 35 to 45 wt% nitroguanidine, 3 to 7 wt% potassium perchlorate, 3 to 6 wt% polyvinyl alcohol and 2 to 6 wt% strontium oxalate. In this case, the components can be adjusted to 100 wt% without any other components. Alternatively, in any aspect of the present disclosure, when the sum of the ingredients does not reach 100 wt%, the ingredients may be adjusted to 100 wt% using a filler.
Unless otherwise indicated, wt% refers to "weight percent," which is the weight of one chemical relative to the weight of the total airbag gas generant formulation. When the wt% is less than 100%, any filler known to one of ordinary skill in the art may be added. For example, the filler may be an inert filler such as clay, chalk, etc. Inert fillers refer to chemicals or ingredients that do not react with other ingredients in the formulation in the environment in which the formulation is typically found. Such an environment may be, for example, in an airbag inflator, in a warehouse, or in an automobile. Each of these locations may be subject to conditions to which the airbag inflator, automobile or warehouse is expected to be subjected, including for example, extremely cold to very hot conditions to which the automobile is subjected in sunlight and in a desert.
The gas generant formulations and airbag gas generant formulations of the present disclosure have a number of desirable properties. One aspect relates to a formulation having at least one property selected from the group consisting of: a gas yield greater than 1.57 grams per cubic centimeter (g/cc); and the constant volume flame temperature is 2700-2800K; the total oxygen balance of the formulation is-2% to + 2%. In a preferred aspect, the formulation comprises two of these properties. In another preferred aspect, the formulation comprises all of these properties.
One aspect relates to an airbag gas generant formulation comprising: 48.2 wt% of strontium nitrate, 36.8 wt% of nitroguanidine, 5 wt% of potassium perchlorate, 5 wt% of strontium oxalate and 5 wt% of polyvinyl alcohol.
Another aspect relates to any one of the formulations of the present disclosure, wherein the formulation further comprises 1 wt% to 5 wt% of copper oxide as a burn rate modifier. For example, an airbag gas generant formulation may include: 44.1% by weight of strontium nitrate, 39.9% by weight of nitroguanidine, 5% by weight of potassium perchlorate, 4% by weight of strontium oxalate, 4% by weight of polyvinyl alcohol and 3% by weight of copper oxide.
In another aspect, the airbag gas generant formulation may further comprise 2 to 6 wt% kaolin clay. Kaolin can be used for slagging and as a coolant. In another aspect, the airbag gas generant formulation may further comprise 2 to 6 weight percent alumina. The alumina can be used for slagging and as a coolant. In another aspect, the airbag gas generant formulation may further comprise 2 to 6 weight percent silica. The silica can be used for slagging and as a coolant. In another aspect, the airbag gas generant formulation may further comprise 2 to 6 wt% of at least one component, which may be one, two or all three of the following: kaolin, alumina and silica.
Vehicles may include various airbags that may deploy during a vehicle collision to absorb energy from a vehicle occupant during the collision. The airbag may be a component of an airbag assembly that includes an airbag inflator in communication with the airbag for inflating the airbag from an uninflated position to an inflated position.
One aspect relates to an airbag inflator that includes an airbag gas generant formulation described in the present disclosure.
Another aspect relates to an airbag module or airbag that includes an airbag gas generant formulation described in the present disclosure.
Another aspect relates to a method of inflating an airbag. The method comprises the following steps: igniting an airbag gas generant of any of the airbag gas generant formulations described in this disclosure to produce a gas; and inflating the balloon with the gas.
Detailed Description
The present disclosure describes non-ammonium nitrate based propellants that are optimized as alternatives to and improvements over ammonium nitrate based hybrid gas generator propellants.
The hybrid gas generator includes a stored gas and a pyrotechnic material. In some hybrid gas generator designs, the reservoir that stores the gas contains both the high pressure gas and the pyrotechnic material. In hybrid gas generators, pyrotechnic materials are used to generate gas and heat stored gas. Ammonium nitrate based propellants are effective because of their high gas yield and relatively high combustion temperature, as compared to those required for pyrotechnic gas generators. The formulation of the ammonium nitrate based propellant blends is near stoichiometric and therefore does not produce unacceptable levels of carbon monoxide or nitrogen oxides and their oxygen balance is near zero. In this type of hybrid gas generator, the stored gas is inert. Some hybrid gasifier designs use a highly negative oxygen balance formula that produces carbon monoxide (CO) and hydrogen (H)2) Oxygen needs to be added to the stored gas to combust CO and H separately2Is CO2And H2And O. Such formulations are described in us patent 7,942,990. The formulations described herein do not require the inclusion of oxygen in the stored gas.
Ammonium nitrate based propellants have a high gas yield relative to the volume of the solid propellant. For example, the ammonium nitrate based propellants described in U.S. Pat. Nos. 5,850,053 and 6,136,113 have a theoretical density of 1.66g/cc and a gas yield of 1.57g gas per cubic centimeter (cc) of solid propellant. The constant pressure flame temperature for these formulations was 2240K, and the constant volume flame temperature was 2700K. For alternative propellants to be operated in the same hybrid gas generator, it is preferred to have the same or equal gas production rate per solid volume and flame temperature.
Due to the foregoing limitations of having a high volumetric gas production rate per solid gas generant and the absence of ammonium nitrate in the propellant, metal-containing oxidizers and high density fuels are very attractive. This type of propellant has a low gas production rate per unit weight, but due to its high solid density, produces the same amount of gas per solid volume as ammonium nitrate based propellants. It is also desirable to use common or least costly ingredients for gas generants. For pyrotechnic gas generators, the fuel of choice today is Guanidine Nitrate (GN). Example 1 shows GN with different oxidizers, as shown in this example, no 1.57g gas per cubic centimeter of solid propellant can be generated when GN is used as a fuel.
The following chemical components recited in the claims are well known to those of ordinary skill in the art. They comprise at least strontium nitrate (Sr (NO)3)2) (ii) a Potassium perchlorate (KClO)4) (ii) a Polyvinyl alcohol; strontium oxalate (SrC)2O4) (ii) a Copper oxide (CuO); kaolin; alumina (Al)2O3) (ii) a And silicon dioxide (SiO)2). Nitroguanidine ((NH)2)2CNNO2Or NO2NHC(＝NH)NH2) Is commercially available and is also well known, it exists in two tautomeric forms, namely nitroimine (left) or nitrosamine (right).
In solution and solid state, the nitroimine form predominates (resonance stabilization).
Reference merging
All publications, patent applications, and patents mentioned anywhere in this disclosure are herein incorporated by reference in their entirety to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference. In case of conflict, the present application, including all definitions herein, will control.
Examples
EXAMPLE 1 various formulation experiments
Table 1 lists some of the fuels that have been used or are intended for use in airbag gas generants. To meet the criteria of producing 1.57 grams of gas per cc of solid volume, a low density component (such as guanidine nitrate) may generally be rejected as a candidate component. Furthermore, fuels with high oxygen demand, such as 5-aminotetrazole, can be overruled because of the low gas yield of such metal-containing oxidant systems.
The flame temperature of the composition tends to increase with increasing heat of formation of the fuel, and therefore propellants containing HMX and RDX tend to have higher flame temperatures; but both HMX and RDX propellants are sensitive and subject to export regulatory legislation. Therefore, candidate components like HMX and RDX are considered infeasible; they also require the addition of large amounts of coolant (material that lowers the flame temperature) to such formulations. Of the other two components listed in table 1, azo dn, although an ideal fuel, is not currently commercially available, and therefore nitroguanidine is the preferred fuel.
Table 2 lists oxidants that have been used or are intended for use in airbag gas generant formulations.
Example 2 determination of the results of the experiment
Example 2 lists the two component system in Table 2 with the oxygen balance of-1% for the oxidant in combination with nitroguanidine. For ease of comparison, the PSAN-GN formulation is also listed. The potassium nitrate-nitroguanidine formulation has a low gas yield and fails to meet the 1.57g/cc requirement. Formulations containing potassium perchlorate and ammonium perchlorate tend to have relatively high combustion temperatures. Strontium nitrate and BCN are the remaining oxidants to be considered.
The propellant for air bags must be cost competitive, and therefore it is preferred to use low bulk density (L BD) nitroguanidine in these formulations, which nitroguanidine is comprised of long fibers that have poor thermal cycling, L BD is ground as mentioned in the literature, patent 6,547,900 describes a method of breaking needle shaped nitroguanidine using a vibrating ball mill, it is preferred to grind the NQ minimally to break the needle bundles, and then add polyvinyl alcohol (PVA) as a binder to enable the NQ formulation to withstand thermal cycling and thermal aging conditions.
Although the combination of strontium nitrate and BCN with two oxidants formed from NQ and PVA can achieve the desired flame temperature, BCN and PVA heat age together poorly. Since PVA is the preferred binder, BCN is eliminated as a candidate ingredient. Typical alternative propellant formulations to ammonium nitrate formulations are strontium nitrate, nitroguanidine and polyvinyl alcohol as a binder, and a coolant to lower the combustion temperature. In examples 3 to 8, various combinations of strontium nitrate and NQ with PVA as a binder are shown. These combinations all meet the minimum gas production and flame temperature per solid propellant volume.
Due to Sr (NO)3)2The NQ formulation has a lower burn rate, so potassium perchlorate (KP) and copper (II) oxide (CuO), or a combination thereof, may be added to increase the burn rate. Examples 6 to 8 show the cases where KP and CuO are included in the formulations. These conditions also meet the requirements for gas yield and flame temperature for application in hybrid gas generators. Both potassium perchlorate and CuO are used as combustion rate catalysts.
Examples 3-8 other formulations and results of their experiments
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (13)
1. An airbag gas generant formulation optimized for a hybrid airbag inflator, the formulation comprising:
40 to 50 wt% strontium nitrate;
35 to 45 wt% nitroguanidine;
3 to 7 wt% potassium perchlorate;
3 to 6 wt% polyvinyl alcohol; and
2 to 6 wt% of strontium oxalate.
2. An airbag gas generant formulation in accordance with claim 1 having at least one property selected from the group consisting of:
a gas yield greater than 1.57 grams per cubic centimeter (g/cc);
the constant volume flame temperature is 2700-2800K; and
the total oxygen balance of the formulation is-2% to + 2%.
3. An airbag gas generant formulation in accordance with claim 1 wherein said formulation comprises:
48.2 wt% strontium nitrate;
36.8 wt% nitroguanidine;
5 wt% potassium perchlorate;
5 wt% strontium oxalate; and
5% by weight of polyvinyl alcohol.
4. An airbag gas generant formulation in accordance with claim 1 wherein said formulation further comprises:
1 to 5 wt% of copper oxide as a burn rate modifier.
5. An airbag gas generant formulation according to claim 4 wherein the formulation is:
44.1 wt% strontium nitrate;
39.9 wt% nitroguanidine;
5 wt% potassium perchlorate;
4 wt% strontium oxalate;
4 wt% polyvinyl alcohol; and
3 wt% copper oxide.
6. An airbag gas generant formulation in accordance with claim 1 further comprising:
2 to 6 wt% kaolin is used for slagging and as a coolant.
7. An airbag gas generant formulation in accordance with claim 1 further comprising:
2 to 6 wt% alumina is used for slagging and as coolant.
8. An airbag gas generant formulation in accordance with claim 1 further comprising:
2 to 6 wt% silica is used for slagging and as coolant.
9. An airbag gas generant formulation in accordance with claim 1 further comprising:
2wt to 6 wt% of at least one selected from: kaolin, alumina and silica.
10. An airbag gas generant formulation in accordance with claim 1 which does not contain oxygen as a storage gas.
11. A gas generator for an airbag comprising the airbag gas generant formulation of claim 1, wherein the gas generator does not comprise oxygen as a storage gas.
12. A method of inflating an airbag comprising the steps of: igniting the airbag gas generant formulation of claim 1 to produce a gas; and inflating the balloon with the gas.
13. The method of claim 12, wherein the igniting step does not include igniting oxygen, which may be a stored gas.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201862618269P | 2018-01-17 | 2018-01-17 | |
| US62/618,269 | 2018-01-17 | ||
| PCT/US2019/013955 WO2019143784A1 (en) | 2018-01-17 | 2019-01-17 | Non-ammonium nitrate based generants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111433172A true CN111433172A (en) | 2020-07-17 |
Family
ID=65409484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980006212.1A Pending CN111433172A (en) | 2018-01-17 | 2019-01-17 | Non-ammonium nitrate based propellants |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20190218155A1 (en) |
| CN (1) | CN111433172A (en) |
| WO (1) | WO2019143784A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113087582A (en) * | 2021-03-31 | 2021-07-09 | 陕西庆华汽车安全***有限公司 | Production method of nitroguanidine-containing gas production medicine for safety airbag |
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| CN1195620A (en) * | 1997-03-24 | 1998-10-14 | 大赛璐化学工业株式会社 | Gas generating pellets, gas generator and air bag apparatus |
| CN1277598A (en) * | 1998-09-14 | 2000-12-20 | 大赛璐化学工业株式会社 | Gas-evolving composition |
| WO2001019757A2 (en) * | 1999-09-16 | 2001-03-22 | Automotive Systems Laboratory, Inc. | Gas generants containing silicone fuels |
| EP1932817A1 (en) * | 2006-12-12 | 2008-06-18 | Nitrochemie Wimmis AG | Nitratoethyl nitroamine propellant for automobile safety systems |
| CN101823927A (en) * | 2010-04-16 | 2010-09-08 | 陕西庆华汽车安全***有限公司 | Aerogenic composition of pretensioner of automobile safety belt and preparation method thereof |
| WO2016148014A1 (en) * | 2015-03-13 | 2016-09-22 | 株式会社ダイセル | Aerosol fire-extinguisher composition |
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| US5486248A (en) * | 1994-05-31 | 1996-01-23 | Morton International, Inc. | Extrudable gas generant for hybrid air bag inflation system |
| US5850053A (en) | 1995-03-31 | 1998-12-15 | Atlantic Research Corporation | Eutectic mixtures of ammonium nitrate, guanidine nitrate and potassium perchlorate |
| US6527886B1 (en) * | 1996-07-22 | 2003-03-04 | Daicel Chemical Industries, Ltd. | Gas generant for air bag |
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-
2019
- 2019-01-17 US US16/250,317 patent/US20190218155A1/en not_active Abandoned
- 2019-01-17 CN CN201980006212.1A patent/CN111433172A/en active Pending
- 2019-01-17 WO PCT/US2019/013955 patent/WO2019143784A1/en active Application Filing
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113087582A (en) * | 2021-03-31 | 2021-07-09 | 陕西庆华汽车安全***有限公司 | Production method of nitroguanidine-containing gas production medicine for safety airbag |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019143784A1 (en) | 2019-07-25 |
| US20190218155A1 (en) | 2019-07-18 |
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