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    • 1. 发明授权
    • Low temperature autoignition composition
    • 低温自燃组成
    • US06749702B1
    • 2004-06-15
    • US09010822
    • 1998-01-22
    • Gregory D. KnowltonChristopher P. Ludwig
    • Gregory D. KnowltonChristopher P. Ludwig
    • C06B3308
    • C06B33/00C06C9/00
    • The present invention relates to a low temperature autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. The low temperature autoignition compositions of the invention include a mixture of an oxidizer and a powdered metal, wherein the oxidizer includes silver nitrate or a comelt or mixture comprising silver nitrate and at least one of an alkali metal nitrate, an alkaline earth metal nitrate, a complex salt nitrate, a dried, hydrated nitrate, an alkali metal chlorate, an alkali metal perchlorate, an alkaline earth metal chlorate, an alkaline earth metal perchlorate, ammonium perchlorate, sodium nitrite, potassium nitrite, silver nitrite, a complex salt nitrite, a solid organic nitrate, a solid organic nitrite, or a solid organic amine, and where the metal fuel and oxidizer are present in amounts sufficient to provide an autoignition composition having an autoignition temperature of no more than about 232° C. The present invention also relates to a method for initiating a gas generator or pyrotechnic composition in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. In the method of the invention, the gas generator or pyrotechnic composition is placed in thermal contact with a low temperature autoignition composition of the invention.
    • 本发明涉及一种低温自燃组合物,用于在暴露于火焰或高温环境的气体发生器或烟火设备中安全地启动主要烟火充电的燃烧。 本发明的低温自燃组合物包括氧化剂和粉末金属的混合物,其中氧化剂包括硝酸银或包含硝酸银的熔融或混合物,以及碱金属硝酸盐,碱土金属硝酸盐, 复合硝酸盐,干燥的水合硝酸盐,碱金属氯酸盐,碱金属高氯酸盐,碱土金属氯酸盐,碱土金属高氯酸盐,高氯酸铵,亚硝酸钠,亚硝酸钾,亚硝酸银,亚硝酸盐盐, 固体有机硝酸盐,固体有机亚硝酸盐或固体有机胺,并且其中金属燃料和氧化剂以足以提供自燃温度不超过约232℃的自燃组合物的量存在。本发明还涉及 涉及在暴露于火焰或高温度的气体发生器或烟火装置中启动气体发生器或烟火组合物的方法 e环境。 在本发明的方法中,气体发生器或烟火组合物与本发明的低温自燃组合物热接触。
    • 3. 发明授权
    • Vehicle airbag inflator and related method
    • 车辆气囊充气机及相关方法
    • US5551725A
    • 1996-09-03
    • US402103
    • 1995-03-10
    • Christopher P. Ludwig
    • Christopher P. Ludwig
    • B60R21/26B60R21/264C06D5/06B60R21/16
    • B60R21/264B60R21/2644C06D5/06
    • A vehicle airbag inflator is provided which comprises a contained volume, a gas producing source for producing a main gas in the contained volume, an initiating system for causing the conversion of the gas producing source to the main gas, wherein the main gas comprises a working gas, and at least one exhaust orifice for providing an exhaust path for the working gas from the contained volume and for controlling the flow of the working gas as it is exhausted from the contained volume. The at least one exhaust orifice includes a contained volume closure for selectively creating a fluid-tight seal in the contained volume. The working gas creates a pressure-volume quantity in the contained volume (PV.sub.CV (t)). The working gas has associated with it a pressure-volume quantity for the cumulative amount of the working gas (PV.sub.cum (t)), and it also has associated with it a total pressure-volume quantity (PV.sub.total) when the gas producing source is fully converted to the main gas. The pressure-volume quantity in the contained volume (PV.sub.CV (t)) reaches a peak (PV.sub.peak) during the conversion of the gas producing source to the main gas that is at least about one half of the total pressure-volume quantity (PV.sub.total).
    • 提供了一种车载气囊充气机,其包括容纳容积,用于在容纳体积中产生主气体的气体产生源,用于使气体产生源转化为主气体的起动系统,其中主气体包括工作 气体和至少一个排气孔,用于从所容纳的体积提供用于工作气体的排气路径,并且用于当从所容纳的容积中排出时控制工作气体的流动。 所述至少一个排气孔包括容纳的容积封闭件,用于选择性地在容纳的容积中产生流体密封。 工作气体在容纳体积(PVCV(t))中产生压力体积量。 工作气体与工作气体的累积量(PVcum(t))相关联,并且当气体产生源完全与其相关联时,总压力体积量(PVtotal)与之相关联 转为主气。 在将气体产生源转化为至少约总压力体积量(PVtotal)的一半的主气体的转化期间,所含容积(PVCV(t))中的压力 - 体积量达到峰值(PVpeak) 。
    • 4. 发明授权
    • Gas generant composition with coolant
    • 气体发生剂组成与冷却剂
    • US06605233B2
    • 2003-08-12
    • US09798640
    • 2001-03-02
    • Gregory D. KnowltonChristopher P. Ludwig
    • Gregory D. KnowltonChristopher P. Ludwig
    • H01J3520
    • C06D5/06C06B23/04
    • A low-solids gas generating composition and a method of producing a gas. The gas is produced by combusting a mixture of a fuel selected from the group consisting of guanidine nitrate, nitroguanidine, cellulose, cellulose acetate, hexamine, 5 amino-tetrazole, 5 nitro-uracil, guanidine salt of 5 nitro-uracil, and mixtures thereof, an oxidizer selected from the group consisting of ceric ammonium nitrate, strontium nitrate, basic copper nitrate, a mixture of ammonium perchlorate and at least one alkali metal salt, and mixtures thereof, and a cupric oxalate hemi-hydrate coolant. The oxidizer-fuel mixture is within about 4 percent of stoichiometric balance, and the low-solids gas generating composition produces no more than about 0.082 cubic centimeters of solids per gram of gas generating composition on combustion.
    • 一种低固体产气组合物和一种生产气体的方法。 通过燃烧选自硝酸胍,硝基胍,纤维素,乙酸纤维素,六胺,5氨基四唑,5硝基尿嘧啶,5硝基尿嘧啶的胍盐和其混合物的混合物的混合物来生产气体 ,选自硝酸铈铵,硝酸锶,碱式硝酸铜,高氯酸铵和至少一种碱金属盐的混合物及其混合物的氧化剂和草酸二乙酯半水合物冷却剂。 氧化剂 - 燃料混合物在化学计量平衡的约4%以内,低固体气体产生组合物在燃烧时产生不大于约0.082立方厘米固体/克燃气产生组合物。
    • 5. 发明授权
    • Gas generating compositions
    • 气体发生组合物
    • US06235132B1
    • 2001-05-22
    • US09114196
    • 1998-07-13
    • Gregory D. KnowltonChristopher P. Ludwig
    • Gregory D. KnowltonChristopher P. Ludwig
    • C06B3100
    • B60R21/264B60R21/2644C06D5/06
    • A pyrotechnic material comprising at least one fuel and an oxidizer of ceric ammonium nitrate or a mixture of ceric ammonium nitrate and one or more other oxidizers, and, optionally, sub-micron (i.e., having an average particle size of less than about 1 &mgr;m) fumed silica for use as a low-solids gas generating composition. When the oxidizer-fuel mixture is within about 4 percent of stoichiometric balance, the pyrotechnic material provides a low solids gas generant less than about 30 percent solids on combustion, and may be formed as pressed pellets, grains, or granules for use in automotive passive restraint systems.
    • 一种烟火材料,其包含至少一种硝酸铈铵的燃料和氧化剂或硝酸铈铵和一种或多种其它氧化剂的混合物,以及任选的亚微米(即平均粒度小于约1um) )热解法二氧化硅用作低固体产气组合物。 当氧化剂 - 燃料混合物在化学计量平衡的约4%以内时,烟火材料在燃烧时提供小于约30%固体的低固体气体发生剂,并且可以形成为用于汽车被动的压制颗粒,颗粒或颗粒 约束系统。
    • 6. 发明授权
    • Gas generating compositions
    • 气体发生组合物
    • US5780768A
    • 1998-07-14
    • US706198
    • 1996-08-30
    • Gregory D. KnowltonChristopher P. LudwigDaniel Haun
    • Gregory D. KnowltonChristopher P. LudwigDaniel Haun
    • B60R21/26B60R21/264C06D5/06C06B42/08C06B29/16C06B31/00C06B31/12
    • B60R21/264B60R21/2644C06D5/06
    • A low-solids gas generating composition, comprising a mixture of a fuel selected for the group consisting of guanidine nitrate, nitroguanidine, cellulose, cellulose acetate, hexamine, and mixtures thereof, and an oxidizer selected from the group consisting of ceric ammonium nitrate, lithium nitrate, lithium perchlorate, sodium perchlorate, phase stabilized ammonium nitrate, a combination of ammonium nitrate with potassium nitrate, potassium perchlorate, or mixtures thereof, such that the combination is a solid solution, a mixture of ammonium perchlorate and at least one alkali metal salt, and mixtures thereof, where the fuel is not nitroguanidine when the oxidizer includes ammonium nitrate. The combination of ammonium nitrate with other salts in solid solution is intended to phase stabilize the ammonium nitrate. The oxidizer-fuel mixture is within about 4 percent of stoichiometric balance. Useful alkali metal salts include lithium carbonate, lithium nitrate, sodium nitrate, potassium nitrate, and mixtures thereof. The preferred oxidizers for the gas generating composition of the invention are ceric ammonium nitrate, lithium nitrate, lithium perchlorate, sodium perchlorate, a mixture of ammonium perchlorate and at least one alkali metal salt, and mixtures thereof. The preferred fuels are guanidine nitrate, nitroguanidine, and mixtures thereof. In addition, the gas generating composition may include an energizing agent, such as RDX or HMX. The gas generating composition of the invention may further comprise sub-micron fumed silica to reduce moisture contamination and serve as a processing and powder flow aid and/or a binder, and may be in the form of pressed pellets, grains, or granules.
    • 一种低固体产气组合物,其包含选自硝酸胍,硝基胍,纤维素,醋酸纤维素,六胺及其混合物的燃料的混合物,以及选自硝酸铈铵,锂 硝酸盐,高氯酸锂,高氯酸钠,相稳定的硝酸铵,硝酸铵与硝酸钾的组合,高氯酸钾或其混合物,使得该组合是固溶体,高氯酸铵和至少一种碱金属盐的混合物 ,及其混合物,其中当氧化剂包括硝酸铵时燃料不是硝基胍。 硝酸铵与固体溶液中的其他盐的组合旨在使硝酸铵相稳定化。 氧化剂 - 燃料混合物在化学计量平衡的约4%以内。 有用的碱金属盐包括碳酸锂,硝酸锂,硝酸钠,硝酸钾及其混合物。 用于本发明的气体发生组合物的优选氧化剂是硝酸铈铵,硝酸锂,高氯酸锂,高氯酸钠,高氯酸铵和至少一种碱金属盐的混合物,及其混合物。 优选的燃料是硝酸胍,硝基胍及其混合物。 此外,气体发生组合物可以包括赋能剂,例如RDX或HMX。 本发明的气体发生组合物还可以包含亚微米热解法二氧化硅以减少水分污染并用作加工和粉末流动助剂和/或粘合剂,并且可以是压制颗粒,颗粒或颗粒的形式。
    • 7. 发明授权
    • Low solids gas generant having a low flame temperature
    • 具有低火焰温度的低固体气体发生剂
    • US06589375B2
    • 2003-07-08
    • US09798547
    • 2001-03-02
    • Gregory D. KnowltonChristopher P. LudwigThomas M. DeppertDan McFaddenJames DupontChristian Salafia
    • Gregory D. KnowltonChristopher P. LudwigThomas M. DeppertDan McFaddenJames DupontChristian Salafia
    • C06B3100
    • C06B23/04C06B23/009C06D5/06
    • A low-solids gas generating composition and a method of generating a gas with low solids by preparing and combusting the low-solids gas generating composition. The compositions of the invention include a mixture of a basic copper nitrate oxidizer and a fuel selected for the group consisting of 5-nitro-uracil, guanidine 5-nitro-uracil salt, ammonium 5-nitro-uracil salt, aminoguanidine 5-nitro-uracil salt, hydrazine 5-nitro-uracil salt, triamino 5-nitro-uracil salt, guanidine 5-nitro-barbituric acid salt, ammonium 5-nitro-barbituric acid salt, hydrazine 5-nitro-barbituric acid salt, aminoguanidine 5-nitro-barbituric acid salt, triaminoguanidine 5-nitro-barbituric acid salt, and mixtures thereof, wherein the oxidizer-fuel mixture is within about 4 percent of stoichiometric balance, and produces no more than about 0.06 cubic centimeters of solids per gram of gas generating composition on combustion. The compositions of the invention may further include at least one of cupric oxalate hemi-hydrate, sub-micron fumed silica, and graphite.
    • 一种低固体产气组合物和通过制备和燃烧低固体产气组合物产生具有低固含量的气体的方法。 本发明的组合物包括碱式硝酸铜氧化剂和选自5-硝基 - 尿嘧啶,5-硝基 - 尿嘧啶盐,5-硝基 - 尿嘧啶铵,5-硝基 - 尿嘧啶-5-氨基胍, 尿嘧啶盐,肼5-硝基 - 尿嘧啶盐,三氨基5-硝基 - 尿嘧啶盐,胍-5-硝基 - 巴比妥酸盐,5-硝基 - 巴比妥酸盐,肼5-硝基 - 巴比妥酸盐,氨基胍5-硝基 - 巴比妥酸盐,三氨基胍-5-硝基 - 巴比妥酸盐及其混合物,其中氧化剂 - 燃料混合物在化学计量平衡的约4%内,并且每克产生气体的组合物产生不超过约0.06立方厘米固体 燃烧。 本发明的组合物还可以包括草酸二水合半合金,亚微米热解法二氧化硅和石墨中的至少一种。
    • 8. 发明授权
    • Method of safety initiating combustion of a gas generant composition
using autoignition composition
    • 使用自燃组合物开始燃烧气体发生剂组合物的安全性方法
    • US06101947A
    • 2000-08-15
    • US10823
    • 1998-01-22
    • Gregory D. KnowltonChristopher P. Ludwig
    • Gregory D. KnowltonChristopher P. Ludwig
    • C06B33/00C06C9/00C06B45/12
    • C06C9/00C06B33/00
    • The present invention relates to a low temperature autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. The low temperature autoignition compositions of the invention include a mixture of an oxidizer and a powdered metal, wherein the oxidizer includes silver nitrate or a comelt or mixture comprising silver nitrate and at least one of an alkali metal nitrate, an alkaline earth metal nitrate, a complex salt nitrate, a dried, hydrated nitrate, an alkali metal chlorate, an alkali metal perchlorate, an alkaline earth metal chlorate, an alkaline earth metal perchlorate, ammonium perchlorate, sodium nitrite, potassium nitrite, silver nitrite, a complex salt nitrite, a solid organic nitrate, a solid organic nitrite, or a solid organic amine, and where the metal fuel and oxidizer are present in amounts sufficient to provide an autoignition composition having an autoignition temperature of no more than about 232.degree. C. The present invention also relates to a method for initiating a gas generator or pyrotechnic composition in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. In the method of the invention, the gas generator or pyrotechnic composition is placed in thermal contact with a low temperature autoignition composition of the invention.
    • 本发明涉及一种低温自燃组合物,用于在暴露于火焰或高温环境的气体发生器或烟火设备中安全地启动主要烟火充电的燃烧。 本发明的低温自燃组合物包括氧化剂和粉末金属的混合物,其中氧化剂包括硝酸银或包含硝酸银的熔融或混合物,以及碱金属硝酸盐,碱土金属硝酸盐, 复合硝酸盐,干燥的水合硝酸盐,碱金属氯酸盐,碱金属高氯酸盐,碱土金属氯酸盐,碱土金属高氯酸盐,高氯酸铵,亚硝酸钠,亚硝酸钾,亚硝酸银,亚硝酸盐盐, 固体有机硝酸盐,固体有机亚硝酸盐或固体有机胺,其中金属燃料和氧化剂以足以提供自燃温度不超过约232℃的自燃组合物的量存在。本发明还涉及 涉及在暴露于火焰或高温下的气体发生器或烟火装置中启动气体发生器或烟火组合物的方法 ure环境。 在本发明的方法中,气体发生器或烟火组合物与本发明的低温自燃组合物热接触。
    • 9. 发明授权
    • Autoignition composition
    • 自燃组成
    • US5959242A
    • 1999-09-28
    • US645945
    • 1996-05-14
    • Gregory D. KnowltonChristopher P. Ludwig
    • Gregory D. KnowltonChristopher P. Ludwig
    • C06B33/00C06C9/00C06B33/08
    • C06B33/00C06C9/00
    • The present invention relates to an autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. The autoignition compositions of the invention include a mixture of an oxidizer composition and a powdered metal, wherein the oxidizer composition includes at least one of an alkali metal or an alkaline earth metal nitrate, a complex salt nitrate, such as Ce(NH.sub.4).sub.2 (NO.sub.3).sub.6 or ZrO(NO.sub.3).sub.2, a dried, hydrated nitrate, such as Ca(NO.sub.3).sub.2.4H.sub.2 O or Cu(NO.sub.3).sub.2.2.5 H.sub.2 O, silver nitrate, an alkali or alkaline earth chlorate, an alkali or alkaline earth metal perchlorate, ammonium perchlorate, a nitrite of sodium, potassium, or silver, or a solid organic nitrate, nitrite, or amine, such as guanidine nitrate, nitroguanidine and 5-aminotetrazole, respectively. The present invention also relates to a method for initiating a gas generator or pyrotechnic composition in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. In the method of the invention, the gas generator or pyrotechnic composition is placed in thermal contact with an autoignition composition of the invention.
    • 本发明涉及一种用于在暴露于火焰或高温环境的气体发生器或烟火装置中安全地起动主要烟火炸药燃烧的自燃组合物。 本发明的自燃组合物包括氧化剂组合物和粉末金属的混合物,其中氧化剂组合物包括碱金属或碱土金属硝酸盐,络合盐硝酸盐,例如Ce(NH 4)2( NO 3)6或ZrO(NO 3)2,干燥的水合硝酸盐如Ca(NO 3)2·4H 2 O或Cu(NO 3)2·2H 2 O,硝酸银,碱金属或碱土金属氯酸盐,碱金属或碱土金属 高氯酸铵,高氯酸铵,钠,钾或银的亚硝酸盐,或固体有机硝酸盐,亚硝酸盐或胺,如硝酸胍,硝基胍和5-氨基四唑。 本发明还涉及在暴露于火焰或高温环境的气体发生器或烟火装置中启动气体发生器或烟火组合物的方法。 在本发明的方法中,气体发生器或烟火组合物与本发明的自燃组合物热接触。
    • 10. 发明授权
    • Gas generating compositions
    • 气体发生组合物
    • US06860951B2
    • 2005-03-01
    • US09798548
    • 2001-03-02
    • Gregory D. KnowltonChristopher P. LudwigDaniel V. Haun
    • Gregory D. KnowltonChristopher P. LudwigDaniel V. Haun
    • B60R21/26B60R21/264C06D5/06C06B31/02C06B29/22
    • C06D5/06B60R21/264B60R21/2644
    • A low-solids gas generating composition, which is a mixture of a fuel selected for the group consisting of cellulose, cellulose acetate, hexamine, and mixtures thereof, and an oxidizer selected from the group consisting of ceric ammonium nitrate, lithium nitrate, lithium perchlorate, sodium perchlorate, phase stabilized ammonium nitrate, a combination of ammonium nitrate with potassium nitrate, potassium perchlorate, or mixtures thereof, such that the combination is a solid solution, a mixture of ammonium perchlorate and at least one alkali metal salt, and mixtures thereof. The combination of ammonium nitrate with other salts in solid solution is intended to phase stabilize the ammonium nitrate. The oxidizer-fuel mixture is within about 4 percent of stoichiometric balance. Useful alkali metal salts include lithium carbonate, lithium nitrate, sodium nitrate, potassium nitrate, and mixtures thereof. The preferred oxidizers for the gas generating composition of the invention are ceric ammonium nitrate, lithium nitrate, lithium perchlorate, sodium perchlorate, a mixture of ammonium perchlorate and at least one alkali metal salt, and mixtures thereof. In addition, the gas generating composition may include an energizing agent, such as RDX or HMX. The gas generating composition of the invention may further comprise sub-micron fumed silica to reduce moisture contamination and serve as a processing and powder flow aid and/or a binder, and may be in the form of pressed pellets, grains, or granules.
    • 一种低固体产气组合物,其是选自纤维素,乙酸纤维素,六胺及其混合物的燃料的混合物,以及选自硝酸铈铵,硝酸锂,高氯酸锂的氧化剂 ,高氯酸钠,相稳定的硝酸铵,硝酸铵与硝酸钾的组合,高氯酸钾或其混合物,使得该组合是固溶体,高氯酸铵和至少一种碱金属盐的混合物,及其混合物 。 硝酸铵与固体溶液中的其他盐的组合旨在使硝酸铵相稳定化。 氧化剂 - 燃料混合物在化学计量平衡的约4%以内。 有用的碱金属盐包括碳酸锂,硝酸锂,硝酸钠,硝酸钾及其混合物。 用于本发明的气体发生组合物的优选氧化剂是硝酸铈铵,硝酸锂,高氯酸锂,高氯酸钠,高氯酸铵和至少一种碱金属盐的混合物,及其混合物。 此外,气体发生组合物可以包括赋能剂,例如RDX或HMX。 本发明的气体发生组合物还可以包含亚微米热解法二氧化硅以减少水分污染并用作加工和粉末流动助剂和/或粘合剂,并且可以是压制颗粒,颗粒或颗粒的形式。