Inorganic Oxygen-halogen Salt Patents (Class 149/42)
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Patent number: 4128442Abstract: A non-aqueous slurry explosive composition comprising an oxidizing salt component, a fuel component, methanol and a metal nitrate or perchlorate soluble in the methanol. Such compositions are highly sensitive and useful in the form of small diameter cartridges.Type: GrantFiled: February 21, 1978Date of Patent: December 5, 1978Assignee: AECI LimitedInventor: Kenneth N. Barlow
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Patent number: 4116131Abstract: A case bonded end burning solid propellant rocket motor utilizing a propellant having sufficiently low modulus to avoid chamber buckling on cooling from cure and sufficiently high elongation to sustain the stresses induced without cracking, the propellant being zone cured within the motor case at high pressures equal to or approaching the pressure at which the motor will operate during combustion. A solid propellant motor having a burning time long enough that its spacecraft would be limited to a maximum acceleration of less than 1 g is provided by one version of the case bonded end burning solid propellant motor of the invention.Type: GrantFiled: May 13, 1970Date of Patent: September 26, 1978Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: John I. Shafer, Harold E. Marsh, Jr.
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Patent number: 4115165Abstract: A sensitizing agent for explosive compositions is provided which comprises particulate aluminum coated with a finely divided hydrophobic fumed silica. Upon incorporation of the hydrophobic material coated aluminum into an aqueous gel explosive composition, relatively large air bubbles, as compared to the size of the individual particles of aluminum, form adjacent the surface of the aluminum. The resulting sensitizing complex includes a relatively large air bubble in close proximity to particulate aluminum, thereby providing a combination which imparts greater sensitivity to the explosive composition.Type: GrantFiled: June 23, 1977Date of Patent: September 19, 1978Assignee: Atlas Powder CompanyInventor: Oldrich Machacek
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Patent number: 4115166Abstract: This patent describes a solid oxidizer for solid rocket propellants comprising small ammonium perchlorate particles containing thereon a coating agent which is applied during the process of grinding larger ammonium perchlorate particles under an inert liquid medium.Type: GrantFiled: January 12, 1970Date of Patent: September 19, 1978Assignee: Aerojet-General CorporationInventors: Edwin L. Lista, Richard B. Hartupee, Ralph K. Manfred, Paul L. O'Neil
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Patent number: 4104092Abstract: Gelled explosive compositions, sensitized with water-in-oil explosive emulsions, are provided which do not require high explosive sensitizing agents and which contain oxidizing salts, water, gelling agents, and, optionally, bulking agents and fuels, as well as from about 1 to about 80 percent by weight of a water-in-oil explosive emulsion sensitizer which can be of the cap sensitive or cap insensitive variety.Type: GrantFiled: July 18, 1977Date of Patent: August 1, 1978Assignee: Atlas Powder CompanyInventor: John J. Mullay
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Patent number: 4098626Abstract: Salicylate esters have been found to be suitable blocking agents for polyisocyanates, enabling preparation of hydroxy terminated polybutadiene based polyurethane bound propellant grains having extended pot life. Unblocking occurs readily at normal propellant cure temperatures, allowing normal cure rates.Type: GrantFiled: November 15, 1976Date of Patent: July 4, 1978Assignee: Thiokol CorporationInventors: William Hardin Graham, Inella Gatlin Shepard
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Patent number: 4096003Abstract: A water gel explosive composition and process for preparing the same is provided which comprises an oxidizer, water, a gelling agent, and a crosslinker, and wherein the improvement comprises including therein from about 1 to about 10 weight percent of at least one amine nitrate sensitizer selected from the group comprising lower alkyl and alkanol amine nitrates and from about 1 to about 10 weight percent of an aluminum sensitizer having a surface area per unit weight of from about 3 to about 9 square meters per gram, said weight percentages based upon the total weight of the explosive composition.Type: GrantFiled: June 10, 1977Date of Patent: June 20, 1978Assignee: Atlas Powder CompanyInventor: Oldrich Machacek
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Patent number: 4090893Abstract: A new combination of bonding agents when employed in hydroxy-terminated pbutadiene propellant compositions yields greatly improved high temperature aging characteristics and greatly improved low temperature physical properties for the compositions. The combination or bonding agent system consists of MT4 (reaction product of 2.0 moles of tris 1(2 methylaziridinyl)phosphine oxide, 0.7 mole adipic acid, and 0.3 mole tartaric acid); HX752 (bis isophthaloyl 1(2 methyl)aziridine); and BIDE (butyliminodiethanol) in a weight percent range of the propellant composition of 0.10% to 0.20%, 0.10% to 0.20% and 0.02% to 0.05% respectively.Type: GrantFiled: October 11, 1977Date of Patent: May 23, 1978Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Marjorie T. Cucksee, Henry C. Allen
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Patent number: 4080227Abstract: The disclosure relates to thermosetting molding compounds and more particularly to a pyrotechnic filled thermosetting compound comprising a blend of unfilled diallyl phthalate molding powder and a pyrotechnic mixture.Type: GrantFiled: June 6, 1977Date of Patent: March 21, 1978Assignee: The United States of America as represented by the United States Department of EnergyInventors: Lawrence W. Hartzel, George E. Kettling
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Patent number: 4062709Abstract: A fluorocarbon bound rocket propellant grain provided with a compatible burn inhibitor on selected areas, particularly the outer surface, which is inexpensive and simple to apply.Type: GrantFiled: September 25, 1968Date of Patent: December 13, 1977Inventors: Victor F. Castaneda, Homer L. Davis
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Patent number: 4057442Abstract: A method for safe, relatively air-pollution free disposal of pyrotechnic compositions is disclosed. High percentage recoveries of the inorganic oxidizer and metallic fuel are achieved, resulting in significant cost benefits, while using a minimum of energy.Type: GrantFiled: March 29, 1976Date of Patent: November 8, 1977Assignee: Thiokol CorporationInventors: Graham C. Shaw, Emil A. Lawton, Leon L. Jones
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Patent number: 4033264Abstract: Processes whereby water based explosive compositions comprising inorganic oxygen releasing salt material and a synthetic polymeric gelling agent may be converted to a cartridged form and wherein the cartridge container is based on paper are described. The preparation of gelled water bearing systems, especially water based explosive compositions comprising inorganic oxygen releasing salt material, containing gelling agents derived from synthetic polymeric material and a redox system is also described.Type: GrantFiled: April 16, 1975Date of Patent: July 5, 1977Assignee: ICI Australia LimitedInventors: Frederick Bolza, Lubos Vojtech Sadek, Richard Fox
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Patent number: 4026738Abstract: A foamed or aerated water gel explosive composition devoid of any self-explosive sensitizer is provided which is sensitive to detonation in charge diameters greater than 5.1 cm. The explosive composition retains sensitivity for long periods. The migration or collapse of air or gas entrained in the composition is substantially prevented by incorporating a blend of a foaming surfactant and a stabilizing surfactant in chosen proportions.Type: GrantFiled: April 19, 1976Date of Patent: May 31, 1977Assignee: Canadian Industries, Ltd.Inventor: Jean Paul Richard
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Patent number: 4023994Abstract: 1. A solid composite type propellant composition comprising as a base propellant an oxidizer, a metallic fuel and fuel binder and between 0.1 and 10% by weight of a ferrocene plasticizer that is selected from the group consisting of mono- and di-substituted ferrocenes wherein the substituents are selected from the group consisting of --R, --COR, --CO.sub.2 R, --CH(OH)R, and --CH(R'CO.sub.2)R wherein R and R' are selected from the group consisting of alkyl, cycloalkyl, alkenyl and cycloalkenyl radicals, the carbon chains of which may be interrupted by oxygen.Type: GrantFiled: September 9, 1963Date of Patent: May 17, 1977Assignee: Thiokol CorporationInventor: William F. Arendale
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Patent number: 4011117Abstract: A method for effecting the cure of poly(glycidyl 2,2-dinitro-2-fluoroethoxide) by utilizing tris (B-isocyanoethyl) nitromethane as a curing agent.Type: GrantFiled: May 23, 1974Date of Patent: March 8, 1977Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: George A. Lo, Milton B. Frankel
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Patent number: 4001059Abstract: 1. A compound selected from the group consisting of 1,2,3-tris(difluoroamino)-cyanopropane, 1-cyano-2,3,5,6-tetrakis(difluoramino)hexane, 1-cyano-2,3,6,7-tetrakis(difluoramino)heptane, and mixtures of 1-cyano-bis(difluoramino)pentenes.5. Mixtures of 1-cyano-bis(difluoramino)pentenes.Type: GrantFiled: May 24, 1963Date of Patent: January 4, 1977Assignee: Rohm and Haas CompanyInventor: Robert C. Petry
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Patent number: 3977924Abstract: Cooled gas generating solid propellant, includes sodium azide or lithium de as a nitrogen gas source, a fluorocarbon binder material, a combustion catalyst, and alkaline metal acid salt coolant.Type: GrantFiled: April 1, 1974Date of Patent: August 31, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventors: Charles R. McCulloch, Gerald L. MacKenzie
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Patent number: 3968139Abstract: 1. Compounds of the general formula ##EQU1## in which R.sup.2 is selected from the group consisting of ##EQU2## 6. A process for the preparation of compounds of the general formula in which R.sup.2 is as defined in claim 1, which comprises nitrating, with a mixture of sulfuric and nitric acids, diols of the general formula ##EQU3## in which R.sup.2 is as defined in claim 1.Type: GrantFiled: October 30, 1962Date of Patent: July 6, 1976Assignee: Rohm and Haas CompanyInventor: Samuel Franklin Reed, Jr.
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Patent number: 3957550Abstract: A flame-explosion couple is disclosed which upon ignition burns for a period of time in a relatively stable manner and thereafter explodes to produce fragments which continue to burn for a further period of time. The composition may comprise from 40 to 89 percent by weight of a volatile liquid fuel, from 10 to 50 percent by weight of a secondary explosive or strong metal salt oxidizer and from 0.5 to 5 percent by weight of an explosive primer. It is usually desirable to incorporate a gellant in the composition to give it a jellylike consistency of a desired viscosity. The composition may optionally contain combustible metal powders and combustible polymers.Type: GrantFiled: September 13, 1966Date of Patent: May 18, 1976Assignee: Thiokol CorporationInventors: Stanley Tannenbaum, Clyde J. Poulin
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Patent number: 3954531Abstract: Composite-modified double base propellants containing aluminum as a metal el having ferric fluoride added as a combustion catalyst, a thermal stabilizer and an aid in reducing exhaust plume interference with a radar guidance system.Type: GrantFiled: June 14, 1973Date of Patent: May 4, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventor: Theodore F. Comfort
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Patent number: 3951706Abstract: 7. A process for preparing a solid propellant composition having a plateau-burning rate comprising the steps ofA. mixing at room temperature the following ingredients until a viscous binder results:Ingredients Percent by weight ______________________________________ High energy plasticizer selected from 15 to 85 the group consisting of pentaerythritol trinitrate, diethylene glycol dinitrate, trimethylolethane trinitrate and mixtures thereof Ingredients Percent by weight ______________________________________ Plastisol nitrocellulose 10 to 50 Ethyl centralite .4 to 5; ______________________________________B. blending into said binder, until a homogeneous pourable mixture result a cured propellant composition which has been milled to an average particle size of about 30 mesh, said composition consisting essentially of the following ingredientsIngredients Percent by weight ______________________________________ Nitrocellulose 13.5 to 27.5 Nitroglycerin 10.5 to 22.5 Additives .Type: GrantFiled: July 3, 1962Date of Patent: April 20, 1976Inventor: Judson B. Eldridge
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Patent number: 3951705Abstract: A blue-burning pyrotechnic tracer mix which provides a smoke trail even ar the blue flame is no longer visible to thus extend the visible range of the projectile in which the mixture is employed, the pyrotechnic mixture comprising by weight percent: 6-10% potassium perchlorate, 11-18% magnesium, 10-20% cupric chloride anhydrous, 35-45% barium nitrate, 12-18% hexachlorobenzene, 5-10% sulfur.Type: GrantFiled: May 14, 1975Date of Patent: April 20, 1976Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Dennis J. Mancinelli, Walter J. Puchalski
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Patent number: 3940297Abstract: A stable, gelled, water-bearing explosive composition and a process for making same. The composition comprises at least one water-soluble inorganic oxygen releasing salt; at least one fuel; water; and at least one gum selected from the group consisting of galactomannans and xanthans crosslinked in situ with a crosslinking agent comprising a redox system which system comprises at least one arsenious compound.Type: GrantFiled: November 5, 1973Date of Patent: February 24, 1976Assignee: ICI Australia LimitedInventor: Frederick Bolza
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Patent number: 3936330Abstract: Disclosed is a pyrotechnic composition and a method for the inflation of passive restraint systems, i.e., crash bags. The method utilizes gases produced by the ignition and burning of a pyrotechnic composition containing an alkali metal azide, a metal halide and an inorganic perchlorate.Type: GrantFiled: August 8, 1973Date of Patent: February 3, 1976Assignee: The Dow Chemical CompanyInventors: Thomas E. Dergazarian, George A. Lane
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Patent number: 3933543Abstract: A gas-generating composition comprising an oxidizer, a non-metal, preferably organic, fuel component, and a metal fuel staple component of a particular size.Type: GrantFiled: January 15, 1964Date of Patent: January 20, 1976Assignee: Atlantic Research CorporationInventor: Dale A. Madden
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Patent number: 3932240Abstract: Solid rocket propellants which utilize hydroxy terminated polybutadiene as he binder and a reactive burn-rate catalyst selected from 4, 4-diferrocenyl-1-pentanol and 3, 3-diferrocenylbutyl isocyanate are disclosed. The burn-rate catalysts are chemically bound to the binder to prevent migration.Type: GrantFiled: June 4, 1973Date of Patent: January 13, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventors: John D. Braun, Arnold Nielsen, M. Frank Pickett, Ronald Henry, William P. Norris