JP2009137820A - Gelatinous transfer charge for inflator - Google Patents

Gelatinous transfer charge for inflator Download PDF

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Publication number
JP2009137820A
JP2009137820A JP2007319125A JP2007319125A JP2009137820A JP 2009137820 A JP2009137820 A JP 2009137820A JP 2007319125 A JP2007319125 A JP 2007319125A JP 2007319125 A JP2007319125 A JP 2007319125A JP 2009137820 A JP2009137820 A JP 2009137820A
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JP
Japan
Prior art keywords
inflator
gel
mass
silicone oil
transfer agent
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.)
Pending
Application number
JP2007319125A
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Japanese (ja)
Inventor
Masaharu Kobayashi
Nobuyuki Oji
信之 大路
正治 小林
Original Assignee
Daicel Chem Ind Ltd
ダイセル化学工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daicel Chem Ind Ltd, ダイセル化学工業株式会社 filed Critical Daicel Chem Ind Ltd
Priority to JP2007319125A priority Critical patent/JP2009137820A/en
Publication of JP2009137820A publication Critical patent/JP2009137820A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B31/00Compositions containing an inorganic nitrogen-oxygen salt
    • C06B31/28Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
    • C06B31/285Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate with fuel oil, e.g. ANFO-compositions
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00Compositions or products which are defined by structure or arrangement of component of product
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00Compositions or products which are defined by structure or arrangement of component of product
    • C06B45/04Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive
    • C06B45/06Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component
    • C06B45/10Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component the organic component containing a resin
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06DMEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART)
    • C06D5/00Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets
    • C06D5/06Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets by reaction of two or more solids

Abstract

PROBLEM TO BE SOLVED: To provide a gel-like transfer agent for an inflator used for an inflator for an air bag device.
A gel-type transfer agent for an inflator having a silicone oil content of 5 to 35% by mass and an ammonium nitrate content of 65 to 95% by mass. Compared with B / KNO 3 which is a general-purpose charge transfer agent, the ignitability of the gas generating agent is good and the cost can be reduced.
[Selection figure] None

Description

  The present invention relates to a gel-like charge transfer for an inflator used for an inflator for an airbag device.

B / KNO 3 is widely used as a transfer agent for inflators. B / KNO 3 is excellent in that the combustion temperature is high and the ignitability of the gas generating agent is good. However, since it burns vigorously and burns out instantly, it is not sufficient for a gas generating agent with low ignitability. Further, B / KNO 3 is not sufficient in that it is expensive and has low gas generation efficiency.

Further, when B / KNO 3 is used, there is a problem that abnormal noise is generated during operation. This problem can be solved by using a rubber-like explosive, but rubber-like explosives are easily affected by the environmental temperature, and operation reliability over a wide temperature range (−40 ° C. to 105 ° C.). This is not satisfactory.
US2005 / 0235863 JP 2000-86376 A JP 2002-12493 A

  An object of the present invention is to provide a gel-type transfer agent for an inflator that can solve problems such as price and ignitability with respect to a gas generating agent.

  The invention according to claim 1 provides a gel-like transfer agent for an inflator containing silicone oil and ammonium nitrate.

  The invention of claim 2 provides a gel-type transfer agent for an inflator having a silicone oil content of 5 to 35% by mass and an ammonium nitrate content of 65 to 95% by mass.

Since the gel-like charge transfer agent for an inflator of the present invention has a larger combustion heat than B / KNO 3 which is a general-purpose transfer charge, it has good ignitability with respect to a gas generating agent having low ignitability. In addition, since the gas generation efficiency is high, the generated gas can be used for the inflation of the airbag, so that the gas generated from the gas generating agent can be supplemented.

  The silicone oil used in the present invention is a known one (for example, see [0016] to [0019] in Patent Document 1), and either a straight silicone oil or a modified silicone oil can be used. Polydimethylsiloxane) is preferred.

The silicone oil preferably has a viscosity in the range of 100 to 20,000 cm 2 / s, more preferably 500 to 15,000 cm 2 / s, and even more preferably 1000 to 15,000 cm in order to make the transfer agent gel. It is in the range of 2 / s. The viscosity is measured at 25 ° C. according to the method described in JIS K2283.

  The content of the silicone oil is preferably 3 to 30% by mass, more preferably 5 to 25% by mass, and still more preferably 5 to 20% by mass.

  As the ammonium nitrate used in the present invention, in addition to normal ammonium nitrate, ammonium nitrate may be used by a known method (for example, JP 2002-2002) using an inorganic potassium salt such as potassium nitrate or potassium perchlorate or an organic potassium salt such as potassium oxalate. -338241, JP-T-2006-520212, JP-A-10-259085) can be used.

  As for content of ammonium nitrate, 70-97 mass% is preferable, More preferably, it is 75-95 mass%, More preferably, it is 80-95 mass%.

  In addition to the silicone oil and ammonium nitrate described above, the gel-type transfer agent for an inflator of the present invention can be made into a three-component system further containing a nitrogen-containing compound. By containing a nitrogen-containing compound, the gas generation efficiency (mol / 100 g; represents the number of moles of generated gas per 100 g of the gas generating agent) is increased, and the initial pressure during ignition is increased. It is preferable because ignitability is also improved.

  When a nitrogen-containing compound is contained, 30% by mass or less is preferable in the total amount of ammonium nitrate and the nitrogen-containing compound.

  Examples of the nitrogen-containing compound include those selected from tetrazole derivatives, guanidine, guanidine carbonate, nitroguanidine, dicyandiamide, nitroaminoguanidine and nitroaminoguanidine nitrate.

  Tetrazole derivatives include tetrazole, 5-aminotetrazole, 5,5′-bi-1H-tetrazole, 5-nitroaminotetrazole, zinc salt of 5-aminotetrazole, copper salt of 5-aminotetrazole, bitetrazole, bitetrazole potassium Examples thereof include salts, bitetrazole sodium salt, bitetrazole magnesium salt, bitetrazole calcium salt, bitetrazole diammonium salt, bitetrazole copper salt and bitetrazole melamine salt.

  The gel-type transfer agent for an inflator of the present invention can be obtained by mixing a predetermined amount of silicone oil and ammonium nitrate, and optionally a predetermined amount of a nitrogen-containing compound.

  The inflator transfer powder of the present invention includes various inflators having a known gas generating agent, for example, an inflator for a driver's seat airbag, an inflator for a passenger seat airbag, an inflator for a side airbag, and an inflator for an inflatable curtain. It can be applied to inflators for knee bolsters, inflators for inflatable seat belts, inflators for tubular systems, and inflators for pretensioners.

Examples and Comparative Examples Each component shown in Table 1 was mixed to obtain a gel-type transfer charge for an inflator of an example and a transfer charge of a comparative example. These explosives were subjected to the following tests. The results are shown in Table 1.

(1) Combustion temperature (K)
This is a simulation value based on a thermochemical equilibrium calculation program.

(2) Heat of combustion (cal / g)
This is a simulation value based on a thermochemical equilibrium calculation program.

(3) Generated gas efficiency (mol / 100g)
This is a simulation value based on a thermochemical equilibrium calculation program.

(4) Friction sensitivity (N), drop sensitivity (cm)
Friction sensitivity (N) and drop sensitivity (cm) were measured based on the explosives performance test method of JIS K4810-1979.

Ammonium nitrate: Trade name K-320 (manufactured by Sumitomo Chemical)
Silicone oil (1): Trade name TSF451-30M (made by Momentive Performance Materials Japan), viscosity 3000cm 2 / s
Silicone oil (2): Trade name KF-96 (manufactured by Shin-Etsu Chemical Co., Ltd.), viscosity 5000 cm 2 / s
Silicone oil (3): Product name KF-96H (manufactured by Shin-Etsu Chemical Co., Ltd.), viscosity 10,000 cm 2 / s

Claims (2)

  1.   Gel-shaped transfer agent for inflators containing silicone oil and ammonium nitrate.
  2. A gel-like transfer agent for an inflator having a silicone oil content of 5 to 35 mass% and an ammonium nitrate content of 65 to 95 mass%.


JP2007319125A 2007-12-11 2007-12-11 Gelatinous transfer charge for inflator Pending JP2009137820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007319125A JP2009137820A (en) 2007-12-11 2007-12-11 Gelatinous transfer charge for inflator

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2007319125A JP2009137820A (en) 2007-12-11 2007-12-11 Gelatinous transfer charge for inflator
US12/326,454 US20090145528A1 (en) 2007-12-11 2008-12-02 Gelatinous enhancer for inflator
EP08021221.0A EP2077258B1 (en) 2007-12-11 2008-12-05 Gelatinous enhancer for inflator

Publications (1)

Publication Number Publication Date
JP2009137820A true JP2009137820A (en) 2009-06-25

Family

ID=40491008

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007319125A Pending JP2009137820A (en) 2007-12-11 2007-12-11 Gelatinous transfer charge for inflator

Country Status (3)

Country Link
US (1) US20090145528A1 (en)
EP (1) EP2077258B1 (en)
JP (1) JP2009137820A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2954309B1 (en) * 2009-12-21 2012-03-23 Eurenco France Malleable solid explosive and its obtaining

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999744A (en) * 1955-05-06 1961-09-12 Hercules Powder Co Ltd Plastic explosive compositions
JPH11292678A (en) * 1998-04-15 1999-10-26 Daicel Chem Ind Ltd Gas generating agent composition for air bag
WO1999057083A1 (en) * 1998-04-30 1999-11-11 Daicel Chemical Industries, Ltd. Enhancer composition for inflator
JP2003529515A (en) * 1999-09-16 2003-10-07 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 Gas generating agent containing silicone fuel
JP2007519602A (en) * 2004-01-29 2007-07-19 オートモーティブ システムズ ラボラトリィ、 インク. Gas generator and spontaneous ignition booster composition
JP2007523036A (en) * 2004-01-28 2007-08-16 オートモーティブ システムズ ラボラトリィ、 インク. Spontaneous ignition pyrotechnic booster composition

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113894A (en) * 1962-06-27 1963-12-10 Atlantic Res Corp Thixotropic heterogeneous monopropellant compositions
US3196059A (en) * 1963-09-24 1965-07-20 Atlantic Res Corp Thixotropic propellant compositions
DE2027709C3 (en) * 1970-06-05 1978-10-19 Dynamit Nobel Ag, 5210 Troisdorf
JP3641343B2 (en) 1997-03-21 2005-04-20 ダイセル化学工業株式会社 Gas generator composition for low residue airbag
JP3982066B2 (en) 1998-06-26 2007-09-26 株式会社Ihi How to install inner shell roof of double shell tank
JP4800469B2 (en) 1999-10-08 2011-10-26 ダイセル化学工業株式会社 Gas generant composition
JP5019550B2 (en) 2001-05-14 2012-09-05 日本プラスト株式会社 Double salt of ammonium nitrate, process for producing the same, and gas generating agent using the same
US6872265B2 (en) 2003-01-30 2005-03-29 Autoliv Asp, Inc. Phase-stabilized ammonium nitrate
US6960268B2 (en) * 2003-05-23 2005-11-01 Autoliv Asp, Inc. Gas generating propellant compositions adapted for co-extrusion with a plastic sheath
US20050235863A1 (en) 2004-01-28 2005-10-27 Stevens Bruce A Auto igniting pyrotechnic booster

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999744A (en) * 1955-05-06 1961-09-12 Hercules Powder Co Ltd Plastic explosive compositions
JPH11292678A (en) * 1998-04-15 1999-10-26 Daicel Chem Ind Ltd Gas generating agent composition for air bag
WO1999057083A1 (en) * 1998-04-30 1999-11-11 Daicel Chemical Industries, Ltd. Enhancer composition for inflator
JP2003529515A (en) * 1999-09-16 2003-10-07 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 Gas generating agent containing silicone fuel
JP2007523036A (en) * 2004-01-28 2007-08-16 オートモーティブ システムズ ラボラトリィ、 インク. Spontaneous ignition pyrotechnic booster composition
JP2007519602A (en) * 2004-01-29 2007-07-19 オートモーティブ システムズ ラボラトリィ、 インク. Gas generator and spontaneous ignition booster composition

Also Published As

Publication number Publication date
US20090145528A1 (en) 2009-06-11
EP2077258A1 (en) 2009-07-08
EP2077258B1 (en) 2018-09-19

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