66 results about "5-Aminotetrazole" patented technology

A CMP composition containing 5-aminotetrazole, e.g., in combination with oxidizing agent, chelating agent, abrasive and solvent. Such CMP composition advantageously is devoid of BTA, and is useful for polishing surfaces of copper elements on semiconductor substrates, without the occurrence of dishing or other adverse planarization deficiencies in the polished copper, even in the presence of substantial levels of copper ions, e.g., Cu<2+>, in the bulk CMP composition at the copper/CMP composition interface during CMP processing.

The present invention is an electrically controlled propellant comprising a binder, an oxidizer, and a cross-linking agent. The boric acid (the cross-linking agent) has been found to function as a cross-linking agent for the high molecular binder used to make the propellant, thereby improving the composition's ability to withstand combustion without melting. The present invention also may include 5-aminotetrazole (5-ATZ) as a stability-enhancing additive. The binder of the present invention may include polyvinylalcohol (PVA) and/or the co-polymer of polyvinylalcohol/polyvinylamine nitrate (PVA/PVAN).

A fire suppressing gas generator composition which has a low burn temperature which provides an adjustable mass flow rate, which provides high inert gas yields upon combustion, which generates flame suppressing gasses during composition, which provides exhaust gas with low particulate content, and which is suitable for use in pellet form. The gas generator composition of the invention generally comprises a high nitrogen content solid, preferably 5-amino tetrazole, and potassium perchlorate or other oxidizer salt in an amount sufficient to allow flameless deflagration of the high nitrogen contant solid. The composition of the invention also preferably comprises a flame inhibitor precursor such as perbrominated aromatic compound, an elastomeric binder, a powder pressing modifier or enhancer such as mica, and an electrostatic charge suppressant such as graphite.

A gas generant composition is provided that contains a transitional metal salt of 5-aminotetrazole and phase stabilized ammonium nitrate. A gas generator incorporating the gas generant composition is also provided. The gas generator may be contained within a gas generating system such as an airbag inflator or seat belt assembly, or more broadly within a vehicle occupant protection system.

A gas generator 10 includes a composition that contains a metal chlorate such as potassium chlorate as an oxidizer, a carboxylic acid such as DL-tartaric acid as a primary fuel, a secondary oxidizer such as strontium nitrate, and if desired, a secondary fuel such as 5-aminotetrazole. Gas generating systems 180 such as vehicle occupant protection systems 180, containing the gas generator 10, are also provided.

The invention discloses a silver-amino tetrazole metal organic framework, a preparation method of the silver-amino tetrazole metal organic framework as well as application of the silver-amino tetrazole metal organic framework in organic dyestuff light degradation. The preparation method comprises the following steps: by utilizing a simple solvent diffusion method, reacting a metal silver salt and an organic amine, thereby preparing a stable metal solution; and enabling the metal solution to react with an organic solution of 5-amino tetrazole, thereby preparing the silver-amino tetrazole metal organic framework with the light degradation performance. The silver-amino tetrazole metal organic framework is simple in preparation process, is high in organic dyestuff photocatalytic degradation efficiency and is a potential light degradation organic pollutant material.

The present invention relates to a gas generator which is a core component of an inflator used for expanding an airbag for alleviating the impact on a passenger occuring during a vehicle collision, and provides the gas generator capable of generating a high combustion rate and a large quantity of gas. The present invention provides a gas generator having a combustion rate of 20 mm/sec or higher, a generated gas amount of 33 moles/kg or higher and a combustion temperature of 2300 K or lower by using: copper diamine dinitrate (CDD) as a principal oxidizing agent; basic copper nitrate (BCN) as an auxiliary oxidizing agent; guanidine nitrate (GN) as a principal fuel; 5-aminotetrazole (5-AT) as a combustion-rate-increasing fuel; metal oxide and a combustible catalyst as catalysts; and an additive. Also, the internal pressure of the inflator manufactured by using the gas generator is reduced to 100 bar, and thus the inflator is manufactured so as to weigh 250g which is a remarkable reduction in comparison with 440g of existing product A and 330g of existing product B.

The invention provides a chlorine-containing pyrotechnic composition which comprises a binder, an oxidator, a pyrotechnic fuel, and a colourant comprising a metal salt of 5-aminotetrazole. The invention further relates to a firework article comprising such a pyrotechnic composition. In addition, the invention provides a method for preparing said colourant.

Described are methods for preparing salts of 5-nitrotetrazolate by reacting 5-aminotetrazole, an acid, and sodium nitrite in water in a batch reaction at an elevated temperature. As examples, the acid is nitric acid, sulfuric acid, perchloric acid, or hydrochloric acid, and the elevated temperature is at or above 65° C.

The invention relates to a method for testing the particle size and the particle size distribution of 5-aminotetrazole, wherein the particle size and the particle size distribution of an organic synthesis intermediate 5-aminotetrazole are tested by a wet laser diffraction method. According to the method, 5-AT particle size test is performed by using a trichloromethane solution containing 0.2-0.4%of sodium dodecylbenzenesulfonate and 0.1-0.2% of ethylphenyl polyethylene glycol as a dispersion system at an ultrasonic dispersion time of 5-10 min. According to the present invention, the relativestandard deviation of the multiple median particle size measurement results is not more than 6%, the precision of the method is good, and the wet laser diffraction method for testing the particle sizeof 5-AT has good applicability and can be used for the test of the particle size of 5-AT so as to be used for the quality control of the product.

The invention discloses a method for preparing green primary explosive Cu(NH3)4ATZ.2H2O. The preparation method comprises that 5-aminotetrazole as an initial raw material is oxidized into sodium 5,5'-azotetrazolate by a basic oxidation method, ammonium hydroxide is added into the sodium 5,5'-azotetrazolate as a base solution at an appropriate temperature, a copper sulphate solution is fast added into the solution, the mixed solution undergoes a combination reaction, the reaction product is subjected to temperature keeping, cooling and suction filtration, and the filter residue is washed by water, then is dehydrated by ethanol and then is dried so that Cu(NH3)4ATZ.2H2O is obtained. The preparation method has simple and safe processes and short synthesis time, adopts low-toxicity or toxicity-less raw materials and has a low cost. After explosion decomposition of Cu(NH3)4ATZ.2H2O, a small amount of black residue is obtained and the gas product mainly comprises nitrogen so that environmental pollution is avoided. Cu(NH3)4ATZ as a dehydrated product of Cu(NH3)4ATZ.2H2O has good explosion performances and is a green primary explosive.

Described are methods for preparing salts of 5-nitrotetrazolate that include reacting aqueous solutions of 5-aminotetrazole, an acid, and sodium nitrite in a continuous flow system at an elevated temperature.

The invention provides a gas generator ignition agent and a preparation method thereof, and a gas generator for a vehicle safety airbag. The gas generator ignition agent contains a fuel, an oxidant, abinder and an additive, wherein the additive is an oxazole-based energy-containing ionic compound. According to the present invention, by adding 5-aminotetrazole nitrate to a boron/potassium nitrateignition agent, on the basis of the ensuring of the combustion heat and the combustion temperature of the agent, the high-temperature and high-pressure gas amount can be increased, the output pressureof the ignition agent can be increased, and the output performance of the ignition pipe can be increased, such that the pressure starting time of the gas generator is advanced to less than 2 ms, andthe pressure value at 10 ms is increased by about 20 Kpa so as to improve the gas generating performance of the gas generator.

The invention discloses an environment-friendly gasoline additive. The gasoline addtive comprises the following components in parts by weight: 40-50 parts of solvent oil, 3-4 parts of 1,3,5,7-tetrakis(4-aminophenyl)adamantane, 1-2 parts of ascorbic acid, 3-5 parts of 5-aminotetrazole, 5-7 parts of an organic nano material, 1-3 parts of graphene, 2-4 parts of glycerol polyoxyethylene ether, 2-4 parts of PPG-1 trideceth-6, 2-5 parts of polyether amine and 1-2 parts of arylamine. The invention also discloses a preparation method of the environment-friendly gasoline additive. The preparation method comprises the following steps: sequentially adding each raw material into a reaction kettle according to a ratio, carrying out reflux condensation and stirring for 3-4 hours, and then carrying out standing for 5-8 hours. Compared with common gasoline or gasoline added with conventional gasoline additives in the prior art, the gasoline added with the gasoline additive disclosed by the invention has lower price and more complete combustion, is more beneficial to improving the lubricity, detergency and corrosion resistance, has a better reinforcing effect on the power of engines, and can effectively prolong the service life of the engine, reduce the exhaust of automobile tail gas, and reduce the pollution to the air and the environment.

The invention provides a preparation method of a temperature-resisting lead-free and barium-free primary explosive 5-nitramino tetrazole calcium. The method comprises the following steps of: mixing nitrosonitric acid and concentrated sulfuric acid by a ratio of 1:1, adding 5-amino tetrazole powder under a stirring condition, heating to 50-70 DEG C to react for 4-6 hours, cooling to room temperature and adding anhydrous Na2CO3 till pH value is neutral; extracting by absolute ethyl alcohol, spirally evaporating a filtrate, adding ethyl acetate to generate a white precipitate, filtering a solid product, and drying at 55-65 DEG C to obtain 5-nitramino tetrazole calcium; adding 5-nitramino tetrazole calcium and distilled water to a reaction bottle, stirring, adding solid powder Ca(OH)2 and heating to 75-85 DEG C to react for 1-2 hours, separating out white crystals, cooling to room temperature, filtering the solid product, washing by absolute ethyl alcohol, and drying at 55-65 DEG C to obtain CaNAT. In the synthesizing process, no toxic and harmful gases are generated, so that the primary explosive has very good thermal stability.

The invention relates to an ignition agent composition with reliable ignition performances and a preparation method thereof. The ignition agent composition comprises, by mass, 40% to 60% of strontiumnitrate, 25% to 40% of 5-aminotetrazole, 1% to 20% of potassium nitrate, 1% to 20% of mica powder, 0.5% to 10% of aluminum oxide, 0.1% to 10% of graphite and 0.1% to 10% of boron nitride. The ignitionagent composition does not stick to a mold in tabletting. The tablet can well retains the original gloss and shape, the phenomenon of ignition delay or large fluctuation of the ignition agent at thelow temperature of 40 DEG C is improved, the impact scope of the ignition agent working at -40 to 90 DEG C is wide, the fire is uniform while the gas generant is ignited, the consistency is good and the ignition performance is significantly improved.

The invention discloses a synthesis method of BNCP (cis-bis-(5-nitrotetrazolato)tetraminecobalt (III) perchlorate) as an initiating explosive. According to the method, NaNT (sodium 5-nitrotetrazolate) and CTCN (cobalt carbonatotetraamine nitrate) are prepared from 5-aminotetrazole and cobalt nitrate as raw materials, and BNCP is synthesized from NaNT and CTCN as raw materials. The yield of BNCP synthesized with the method can reach 60% or higher, and product purity is higher. The raw materials are simple and easily available, a synthesis route is simple, and industrial production is facilitated.

The invention discloses a method for preparing a 5-aminotetrazole compound. The method comprises the following steps: adding bis-substituted selenourea shown in the formula II in the description, ionic liquid loaded iodobenzene diacetate shown in the formula III in the description, sodium azide and alkali A into a solvent B, stirring at -10 to -80 DEG C and conducting cyclization reaction, and after the reaction is finished, conducting aftertreatment on the reaction liquid to prepare the 5-aminotetrazole compound shown in the formula I in the description. Compared with the conventional method, a green reagent, namely, ionic liquid loaded iodobenzene diacetate, is adopted, so that the use of heavy metal is avoided, the operation is simple and convenient, and the reaction yield is high.