EP0864553A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Gas generating agent and transfer charge for use in airbag gas generator, and gas generator comprising said gas generating agent and transfer charge
Assignee: Kobe Steel Ltd
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Filing: 1996-11-29
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Granted: —
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Expires: 2016-11-29
Abstract
Abstract The present invention provides an enhancer and /or a gas generating agent made of a mixture including a fuel ingredient, an oxidizing agent and a combustion catalyst, which has a spontaneous firing function, wherein said fuel ingredient is a nitrogen atom-contained organic compound consisting of at least one kind selected from the group consisting of azodicarbonamide, carbohydrazide, dicyandiamide, aminotetrazole, aminoguanidine, triaminoguanidine nitrate, nitroguanidine, triazole, tetrazole, azobitetrazole, bitetrazole, and salts of those compounds, nitrate is contained as said oxidizing agent by at least 50 % by weight, said combustion catalyst contains substance selected from the following groups of 1 ○ to 3 ○ . 1 ○ at least one kind selected from the group consisting of zirconium, hafnium, molybdenum, tungsten, manganese, nickel, iron and oxides and sulfides of those elements; 2 ○ at least one kind selected from the group consisting of carbon and phosphorus; and 3 ○ a mixture of the above members 1 ○ and 2 ○ . Also, the present invention provides a gas generator for an air bag comprising above enhancer and above gas generating agent.
Inventors
- 👤 Takeshi Sensor Technology Co. Ltd. KANDA
- 👤 Nobuaki Sensor Technology Co. Ltd. KOKOTE
- 👤 Takashi Sensor Technology Co. Ltd. SASO
- 👤 Koji Sensor Technology Co. Ltd. TANAKA
- 👤 Akihiko Sensor Technology Co. Ltd. KUROIWA
- 👤 Yuji Himeji Factory of Nippon Kayaku K.K. ITO
- 👤 Ayumu Himeji Factory of Nippon Kayaku KK KIMURA
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 16:18
CPC Classifications
C; C06; C06D; C06D5/00; C06B; C06B23/00; C06B23/007; B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/26; C06C; C06C9/00; C06D5/06; Y; Y10; Y10S; Y10S149/00; Y10S149/11
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
156 words
An enhancer and /or a gas generating agent
made of a mixture including a fuel ingredient, an
oxidizing agent and a combustion catalyst, which
has a spontaneous firing function, wherein said fuel ingredient is a nitrogen atom-contained
organic compound consisting of at least
one kind selected from the group consisting of
azodicarbonamide, carbohydrazide, dicyandiamide,
aminotetrazole, aminoguanidine, triaminoguanidine
nitrate, nitroguanidine, triazole, tetrazole,
azobitetrazole, bitetrazole, and salts of those
compounds, nitrate is contained as said oxidizing agent by
at least 50 % by weight of, said combustion catalyst contains substance
selected from the following groups of 1 ○ to 3 ○ . 1 ○ at least one kind selected from the group
consisting of zirconium, hafnium, molybdenum,
tungsten, manganese, nickel, iron and oxides and
sulfides of those elements; 2 ○ at least one kind selected from the group
consisting of carbon and phosphorus; and 3 ○ a mixture of the above members 1 ○ and 2 ○ .
Claim 2
Dependent Claim
149 words
An enhancer made of a mixture including a
fuel ingredient, an oxidizing agent and a combustion
catalyst, which has a spontaneous firing function,
wherein said fuel ingredient is a nitrogen atom-contained
organic compound consisting of at least
one kind selected from the group consisting of
azodicarbonamide, carbohydrazide, dicyandiamide,
aminotetrazole, aminoguanidine, triaminoguanidine
nitrate, nitroguanidine, triazole, tetrazole,
azobitetrazole, bitetrazole, and salts of those
compounds, nitrate is contained as said oxidizing agent by
at least 50 % by weight, said combustion catalyst contains substance
selected from the following groups of 1 ○ to 3 ○ . 1 ○ at least one kind selected from the group
consisting of zirconium, hafnium, molybdenum,
tungsten, manganese, nickel, iron and oxides and
sulfides of those elements; 2 ○ at least one kind selected from the group
consisting of carbon and phosphorus; and 3 ○ a mixture of the above members 1 ○ and 2 ○ .
Claim 3
Dependent Claim
226 words
The enhancer and /or a gas generating agent
as set forth in any one of Claims 1 or 2, further
comprising a binder for binding and forming said
fuel ingredient, an oxidizing agent and a
combustion catalyst, said binder consisting of at least one kind
selected from groups of 4 ○ to 7 ○ : 4 ○ hydrotalcite-type compound expressed by the
following general formula : [M 2+ 1-x M 3+ x (OH) 2 ] x+ [A n- x/n ·mH 2 O] x- where M 2+ represents a bivalent metal such as Mg 2+ ,
Mn 2+ , Fe 2+ , Co 2+ , Ni 2+ , Cu 2+ and Zn 2+ ; M 3+ represents a trivalent metal such as Al 3+ ,
Fe 3+ , Cr 3+ , Co 3+ and In 3+ ; A n- represents an n-valence anion such as OH - ,
F - , Cl - , Br - , NO 3 - , CO 3 2- , SO 4 2- , Fe(CN) 6 3- , CH 3 COO - , oxalate ion and salicylate ion; and x: 0 < x ≦ 0.33. 5 ○ Acid clay or activated clay 6 ○ Natural zeolite or artificial zeolite 7 ○ A mixture of two or more kind selected
from the group consisting of the preceding 4 ○ to 6 ○ .
Claim 4
Dependent Claim
66 words
The enhancer and /or a gas generating agent
as set forth in Claim 3, wherein said hydrotalcite-type compound consisting of
at least one kind selected from the group
consisting of hydrotalcite expressed by a chemical
formula Mg 6 Al 2 (OH 16 CO 3 ·4H 2 O and pyroaurite
expressed by a chemical formula of Mg 6 Fe 2 (OH) 16 CO 3 ·4H 2 O.
Claim 5
Dependent Claim
33 words
The enhancer and /or a gas generating agent
as set forth in any one of Claims 3 or 4, wherein a contained amount of said hydrotalcite-type
compound is 2 to 30% by weight.
Claim 6
Dependent Claim
38 words
The enhancer and /or a gas generating agent
as set forth in any one of Claims 3 to 5, wherein a 50% average particle diameter of a reference
number of said hydrotalcite-type compound is 30 µm
or less.
Claim 7
Dependent Claim
28 words
The enhancer and /or a gas generating agent
as set forth in any one of Claims 1 to 6, wherein said oxidizing agents are nitrates of alkali
metals.
Claim 8
Dependent Claim
35 words
The enhancer and /or a gas generating agent
as set forth in Claim 7, wherein a 50% average particle diameter of a reference
number of said nitrate of alkali metal is 5 to 80 µm.
Claim 9
Dependent Claim
33 words
The enhancer and /or a gas generating agent
as set forth in any one of Claims 1 to 8, wherein a contained amount of said combustion catalyst
is 10% by weight or less.
Claim 10
Dependent Claim
33 words
The enhancer and /or a gas generating agent
as set forth in Claim 9, wherein a 50% average particle diameter of a reference
number of said combustion catalyst is 10 µm or
less.
Claim 11
Dependent Claim
18 words
The enhancer as set forth in any one of
Claims 2 to 10, wherein said enhancer is granulated.
Claim 12
Dependent Claim
30 words
The enhancer as set forth in Claim 11,
wherein said granules of the enhancer are subjected
to heat-treatment for 2 to 24 hours at 100 to 120 °C
after granulating.
Claim 13
Dependent Claim
31 words
The enhancer as set forth in any one of
Claims 2 to 12, wherein a spontaneous firing
temperature of said enhancer falls in the rang of
150 to 180 °C .
Claim 14
Dependent Claim
26 words
A gas generator for an air bag comprising
said enhancer and said gas generating agent as set
forth in any one of Claims 1 to 13.
Claim 15
Dependent Claim
21 words
A gas generator for an air bag comprising
said enhancer as set forth in any one of Claims 1
to 13.
Claim 16
Dependent Claim
33 words
The gas generator for an air bag as set
forth in any one of Claims 14 or 15, wherein an explosive composition is substantially
common to said enhancer and said gas generating
agent.
References Cited (Backward Citations)
No citation records indexed.
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