Gas-producing mixtures
First Claim
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1. Gas-producing composition for gas generators, wherein said gas producing composition comprises:
- a fuel;
an oxidant;
a combustion moderator; and
an additive capable of reducing nitrogen oxides and/or carbon monoxide, the additive selected from the group consisting of urea, urea derivatives, ferrocene, ferrocene derivatives, or sulphur.
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Abstract
The subject of the present invention is gas-producing agents for gas generators which contain, as nitrogen-containing compound (fuel), a compound from the group tetrazole, triazole, triazine, cyanic acid, urea, their derivatives or salts thereof, as oxidants, compounds from the group of the peroxides, nitrates, chlorates or perchlorates, and also combustion moderators which are capable of influencing, by heterogeneous or homogeneous catalysis, the combustion and its rate, as well as, optionally, additions capable of affecting the proportion of the toxic gases.
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Citations
55 Claims
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1. Gas-producing composition for gas generators, wherein said gas producing composition comprises:
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a fuel;
an oxidant;
a combustion moderator; and
an additive capable of reducing nitrogen oxides and/or carbon monoxide, the additive selected from the group consisting of urea, urea derivatives, ferrocene, ferrocene derivatives, or sulphur. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Gas-producing composition for gas generators, wherein said gas producing composition comprises:
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a fuel;
an oxidant including a combination of zinc peroxide, potassium perchlorate, and at least one nitrate; and
an additive capable of reducing nitrogen oxides and/or carbon monoxide, the additive selected from the group consisting of urea, urea derivatives, ferrocene, ferrocene derivatives, sulphur, or metal sulphides. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for reducing nitrogen oxides and/or carbon monoxide in gas mixtures from pyrotechnic reactions, comprising:
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carrying out a pyrotechnic reaction of a gas generating substance to generate a gas mixture, the gas generating substance including a fuel, an oxidizer, and an additive capable of reducing nitrogen oxides and/or carbon monoxide, the additive selected from the group consisting of urea, urea derivatives, ferrocene, ferrocene derivatives, or sulphur;
vaporizing the additive by heat released in the pyrotechnic reaction; and
converting nitrogen oxides and/or carbon monoxide in the gas mixture to non-toxic compounds in a gas phase reaction by reaction with the vaporized additive. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A method for reducing nitrogen oxides and/or carbon monoxide in gas mixtures from pyrotechnic reactions, comprising:
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carrying out a pyrotechnic reaction of a gas generating substance to generate a gas mixture, the gas generating substance including a fuel, an oxidant including a combination of zinc peroxide, potassium perchlorate, and at least one nitrate, a combustion moderator, and an additive capable of reducing nitrogen oxides and/or carbon monoxide, the additive selected from the group consisting of urea, urea derivatives, ferrocene, ferrocene derivatives, sulphur, or metal sulphides;
vaporizing the additive by heat released in the pyrotechnic reaction; and
converting nitrogen oxides and/or carbon monoxide in the gas mixture to non-toxic compounds in a gas phase reaction by reaction with the vaporized additive. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. Gas-producing composition for gas generators, wherein said gas-producing composition comprises:
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a) as fuel, at least one nitrogen-containing compound selected from the group consisting of tetrazole, triazole, triazine, cyanic acid, urea, and their derivatives or their salts;
b) as oxidant, a combination of zinc peroxide, potassium perchlorate and at least one nitrate. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 50, 51, 52, 53, 55)
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46. Gas-producing composition for gas generators comprising nitrogen-containing compounds, wherein said gas-producing composition comprises:
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a) as nitrogen-containing compound, a combination of aminotetrazole and calcium, magnesium or zinc salts, of aminotetrazole;
b) as oxidant, at least three compounds selected from the group consisting of peroxides, nitrates, chlorates and perchlorates; and
c) combustion moderators which are capable of influencing combustion and its rate by heterogeneous or homogeneous catalysis selected from the group consisting of zinc oxide and carbonates of zinc and calcium. - View Dependent Claims (49, 54)
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47. Gas-producing composition for gas generators, comprising nitrogen-containing compounds, wherein said gas-producing composition comprises:
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a) as nitrogen-containing compound (fuel), urea, its salts, its derivatives and their salts, biuret, guanidine, nitroguanidine, guanidine nitrate, aminoguanidine, aminoguanidine nitrate, thiourea, triaminoguanidine nitrate, aminoguanidine hydrogen carbonate, azodicarbonamide, dicyanodiamidine nitrate, dicyanodiamidine sulphate, tetracene and/or semicarbazide nitrate, urethanes, ureides, and their derivatives;
b) as oxidants, at least two compounds from the group of peroxides, nitrates, chlorates or perchlorates;
c) combustion moderators selected from the group consisting of zinc oxide and carbonates of zinc and calcium, the combustion moderator being capable of influencing the combustion and its rate by heterogeneous or homogeneous catalysis. - View Dependent Claims (48)
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Specification