Abstract: An improved thermally stable, storage stable gas generating composition characterized by both an increased burning rate and a decreased pressure exponent for producing a clean, nontoxic, substantially ash- and solids-free gas for inflating inflatable structures such as vehicle airbags is provided. Optimum combustion efficiencies and operating pressures are achieved in the improved gas generating composition by adding an effective amount of a copper or copper compound catalyst to a gas generating composition that is preferably a eutectic mixture or solid solution of ammonium nitrate, at least one highly oxygenated fuel, potassium or cesium perchlorate or nitrate and an optional binder.

Abstract: The invention relates to a process to manufacture an object using at least one granular material (16) having a large particle size, for example greater than or equal to 0.1 mm, such process being characterised by the following stages: the granular material or materials are placed in a mould (2) at the same dimensions as the object to be made and incorporating at least one evacuation opening (6), said opening being of a size that is less than the particle size of the material, a liquid-phase binder (21) is poured into the mould, the binder is mixed between the grains of material and the excess binder is drained off through the evacuation opening using suction means (11). Application in the manufacture of igniting tubes or propellant charges for artillery ammunition.

Abstract: A gas generating apparatus for outputting a gas is provided. In one embodiment, the apparatus is an inflator having a propellant for supplying inflation gas(es) to an inflatable located in a vehicle. A confining member is located adjacent to the propellant. A number of spaced holes are provided in the confining member, either before or after activation of the propellant. Inflation gas is received through the spaced holes for subsequent passage to the inflatable. In that regard, the inflation gas first passes through a chamber defined in a timing member that has metering orifices. Such orifices regulate the flow of the inflation gas to the inflatable. The confining member is able to withstand significant pressures without rupturing. Each of the confining member and the timing member is preferably made of a non-metallic material. The propellant includes a fuel-rich material and an oxidizer material, preferably ammonium nitrate.

Abstract: An inflator apparatus for inflating an inflatable device and a method are provided wherein a combination of a dissociative gas source material and at least one unreactive dissociation reaction modifier is stored at least partially in liquefied form with the reaction modifier effective to moderate at least one of the temperature and concentration of the at least one gas source material upon the dissociation of at least a portion of the at least one gas source material.

Abstract: A family of water-based gas-generating liquid compositions is described. A composition of the present invention includes: hydrogen peroxide; hydrazinium mononitrate; and water. Compositions of the present invention may be mixed with fuels to make monopropellants or used in bipropellant or hybrid systems. Alternative uses of the present invention include breathable gas generation.

Abstract: An anhydrous 5-aminotetrazole or “5-AT” based gas generating composition for use in passive restraint devices, such as air bags and a method of preparing the same that is devoid of metal oxides. The gas generating composition includes 5-AT with a blend of oxidizers such as potassium perchlorate and potassium nitrate. This gas generating composition is devoid of metal oxides, such as copper oxide or iron oxide, which form an insoluble slag when ignited. After ignition, the combustion products of the gas generating composition can be filtered with a filter assembly that includes a ceramic blanket. The ceramic blanket preferably includes an aluminum oxide and a silicon oxide.

Abstract: A family of water-based, gas-generating liquid compositions is described. A composition of the present invention includes: hydrogen peroxide, hydroxylammonium nitrate, and water. Compositions of the present invention may be mixed with fuels to make monopropellants or used in bipropellant or hybrid systems. Alternate uses of the present invention include breathable gas generation or use as an oxygen source in welding.

Abstract: A compound has the structure of 3,3-bis(difluoroamino)-1,5-dinitratopentane and is useful in energetic materials.

Abstract: A pyrotechnical object is made by compressing a pyrotechnical mass, and introducing into the mass an ignition and combustion accelerator in the form of a propellant powder. The propellant powder could be mixed with the mass prior to compression. Alternatively, the propellant powder could be pressed into an ignition surface of the mass after the pressing. The propellant powder may comprise basic cellulose and/or nitro-cellulose.

Abstract: This substantially water-free method for preparing high density igniter granules involves uniformly coating fuel and oxidizer particulates dispersed in a non-solvent with a thermoplastic elastomer solution to produce coated igniter granules exhibiting substantially uniform size and shape distributions. The coated igniter granules are especially useful for waterless extrusion into igniters for automobile gas generating inflation devices, solid propellant rocket motors, and thrust decoys.

Abstract: A low-smoke producing pyrotechnic composition including a high-nitrogen content, low-carbon content energetic material, an oxidant and a colorant is disclosed together with the use of selected metal salts of a high-nitrogen content, low-carbon content energetic material as the colorant.

Abstract: A propellent charge powder for barrel-type weapons having a plasticizer on the basis of nitramine and nitrocellulose, nitramine and energetic and non-energetic plastic binders, or nitrocellulose or an explosive, and wherein the plasticizer is a mixture of at least two chemically different dinitro diaza compounds. The plasticizer facilitates the production and use of the propellent charge powder possessing a low temperature coefficient.

Abstract: An oxidizer coated with inorganic particles is provided. A method for reducing the mechanical energy sensitivity of an oxidizer is also provided, which comprises coating the oxidizer with inorganic particles. Further, a combustible composition comprising the oxidizer coated with inorganic particles and a fuel as well as a gas generator comprising the oxidizer coated with inorganic particles and a fuel is provided.

Abstract: A family of water-based gas-generating liquid compositions is described. A composition of the present invention includes: a first compound which may be hydrazinium mononitrate or methylhydrazinium mononitrate; ammonium nitrate; and water. Compositions of the present invention may be mixed with fuels to make monopropellants or used in bipropellant or hybrid systems. Alternative uses of the present invention include breathable gas generation.

Abstract: A heat transfer delay for providing a delay time in propellant, pyrotechnic, and explosive devices, and a method of delaying production of a non-detonating thermal output with the heat transfer delay. A representative delay is in the form of a housing having a first heat source cavity, a second heat source cavity, and a heat transfer cavity connecting the first and second heat source cavities. A pyrotechnic heat source is placed in thermal contact with the first heat source cavity, and a non-detonating autoignition material is placed in thermal contact with the second heat source cavity.

Abstract: It has now been found that certain novel photostable agriculturally acceptable organic or inorganic salts of formula I are useful as insecticides: where R is alkoxycarbonyl, alkoxycarbonylamino, cycloalkylalkoxy, 2-alkyl-2H-tetrazol-5-yl, or 2-haloalkyl-2H-tetrazol-5-yl; R1 is trihaloalkyl, or trihaloalkoxy; n is 0, or 1; and, wherein said salts are derived from hydrochloric acid; hydrobromic acid; boric acid; phosphoric acid; maleic acid; fumaric acid; phthalic acid; salicylic acid optionally substituted with alkyl or halogen; D-glucuronic acid; the sulfonic acid R2SO3H where R2 is alkyl, haloalkyl, hydroxyalkyl, D-10-camphoryl, or phenyl optionally substituted with alkyl or halogen; the carboxylic acid R3CO2H where R3 is hydrogen, alkyl, trihaloalkyl, carboxyl, phenyl optionally substituted with alkyl or halogen, or pyridyl; the boronic acid R4B(OH)2 where R4 is alkyl or phenyl optionally substituted with alkyl or halogen; the phosphonic acid R5PO3H2 where R5 is alkyl, haloalkenyl, or phe

Abstract: Films, made of polyethylenes and filers, and articles made therefrom greater WVTR than previously available films based on conventional Zeigler-Natta based polyethylenes. The polyethylenes are produced in a metallocene-catalyzed production process. The films may be made by a cast film process, and may be made in widely varying filler content, generally polyethylene to filler ratios of 30/70 to 70/30. The metallocene based polyethylenes when combined with filler also permit the extrusion of thinner films leading to lighter weight and softer films. The m-polyethylenes utilized for making such films typically have a Composition Distribution Breadth Index above 50%, a Mw/Mn below 3, and a Mz/Mw below 2.

Abstract: Disclosed is a process for leaching low sulphur materials for recovery of metals contained in them. The process includes leaching a first low sulphur material containing metal values with a leaching agent produced by bacterial oxidation of a second material by bacterial action thereby liberating metal values from the first material by a substantially indirect bioleaching process.

Abstract: Compounds of the following structure are disclosed as effective insecticides: in which: A and B are independently lower alkyl; U is lower alkylidene, lower alkenylidene, or CH—Z, where Z is hydrogen, lower alkyl, lower cycloalkyl, or phenyl; R is phenyl or a dibenzocyclo(C5-8)alkyl, each optionally substituted, or where R3 and R4 are independently selected from phenyl, optionally substituted with, halogen, lower alkyl, lower haloalkyl, lower alkoxy, lower haloalkoxy, lower alkenyl, or phenyl; R1 is selected from a variety of substituents, including 3-R2, where R2 is where D, E, and G are hydrogen, hydroxy, halogen, cyano, hydroxy, lower alkyl, lower haloalkyl, lower alkoxy, nitro, lower haloalkylsuffonyloxy, lower alkylcarboxylato, lower alkylcarbonylamino, lower alkylcarbonyl, lower alkoxycarbonyl, arylcarbonylamino; D and E taken together may form the group —O(CH2)O—; J is hydrogen or lower alkyl; m is 2 or 3, n is 1, 2, or 3; and halog

Abstract: Absorbent garments including monolithic backing members are provided having controlled regional breathability with high WVTR regions and low WVTR regions. The zoned monolithic films can be made by selectively applying adhesive to the monolithic film.