Nitrated Pentaerythritol Patents (Class 149/93)
  • Patent number: 4221616
    Abstract: A slurry explosive composition comprising at least one inorganic oxidizing salt, an aqueous liquid phase, fuel material and a sensitizing agent which agent comprises a combination of hydrophobic particles of high explosive material and gas bubbles.
    Type: Grant
    Filed: January 15, 1979
    Date of Patent: September 9, 1980
    Assignee: ICI Australia Limited
    Inventor: Colin D. McLean
  • Patent number: 4214929
    Abstract: At least one combustion modifier is incorporated in liquid propellants by ssolving the modifier in at least one solvent such as alkoxypolyethylene glycol ether or a bis(alkoxypolyethylene glycol) formal to form a solution and mixing the resulting solution with the energetic component of the liquid propellant. Similar solutions of combustion modifier are also suitable for use as casting liquids in cast double-base propellants.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: July 29, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Albert T. Camp, Kurt F. Mueller, George W. Nauflett
  • Patent number: 4196026
    Abstract: An improved explosive composition is disclosed and comprises a major portion of an explosive having a detonation velocity between about 1500 and 10,000 meters per second and a minor amount of a donor additive comprising an organic compound or mixture of organic compounds capable of releasing low molecular weight free radicals or ions under mechanical or electrical shock conditions and which is not an explosive, or an inorganic compound or mixture of inorganic compounds capable of releasing low molecular weight free radicals or ions under mechanical or electrical shock conditions and selected from ammonium or alkali metal persulfates.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: April 1, 1980
    Inventors: Franklin E. Walker, Richard J. Wasley
  • Patent number: 4142927
    Abstract: An improved explosive composition is disclosed and comprises a major portion of an explosive having a detonation velocity between about 1500 and 10,000 meters per second and a minor amount of a getter additive comprising a compound or mixture of compounds capable of capturing or deactivating free radicals or ions under mechanical or electrical shock conditions and which is not an explosive. Exemplary getter additives are isocyanates, olefins and iodine.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: March 6, 1979
    Inventors: Franklin E. Walker, Richard J. Wasley
  • Patent number: 4132574
    Abstract: A cap-sensitive slurry explosive capable of propagating a high order detonation in thin layers and which has a high degree of safety for a cap-sensitive explosive. The slurry consists of a super-fine grained explosive, suspended in an energetic, but non-self-explosive liquid matrix and contains no liquid explosive ingredient. The slurry resists dispersion in a variety of liquids including water and crude oil. In the preferred embodiments the slurries include penetaerythritol tetranitrate (PETN) in super fine particles, having an average particle size of about 6.5 microns.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: January 2, 1979
    Inventor: Charles D. Forrest
  • Patent number: 4118414
    Abstract: Tris(difluoramino)methoxypentaerythrityl nitrates and perfluoroguanidine adducts of pentaerythrityl nitrates, useful as propellant ingredients, are disclosed.
    Type: Grant
    Filed: March 28, 1966
    Date of Patent: October 3, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventors: Melvin Goldstein, William E. Tyler, III
  • Patent number: 4092188
    Abstract: Nitramine propellants absent a pressure exponent shift in the burning rate curves are prepared by matching the burning rate of a selected nitramine or combination of nitramines within 10% of burning rate of a plasticized active binder so as to smooth out the break point appearance in the burning rate curve.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: May 30, 1978
    Inventors: Alan M. Acting Administrator of the National Aeronautics and Space Administration, with respect to an invention of Lovelace, Norman S. Cohen, Leon D. Strand
  • Patent number: 4088518
    Abstract: The specification describes heat-stable pressure-moulded composite explosives which comprise at least one crystalline explosive having a high rate of detonation and, as a synthetic binder therefor, a cross-linked silicone resin. These composite explosives are produced by coating the crystalline explosive in the presence of water with a thermosetting polysiloxane prepolymer, then drying and cross-linking the moulding powder obtained, and finally cold-compressing the cross-linked moulding powder to form a shaped composite explosive.These explosives have exceptional mechanical strength at elevated temperatures which enables them to be used in all types of explosive charge. The process used provides increased safety and results in a lower cost price.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: May 9, 1978
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Jean-Paul A. Kehren, Robert A. Dusset
  • Patent number: 4025591
    Abstract: An article of manufacture and a method of producing same is disclosed, wherein the article is a solid explosive composition comprised of a major portion of particulate explosive material bound together by a minor portion of a cured anaerobic binding material.
    Type: Grant
    Filed: November 10, 1975
    Date of Patent: May 24, 1977
    Assignee: Jet Research Center, Inc.
    Inventor: Daniel O. Pendergast
  • Patent number: 4018636
    Abstract: Explosive compositions utilizing binders which are soluble in water or wh hydrolyze under dilute acidic or basic conditions to yield non-toxic products are disclosed. The use of such binders permits one to readily remove the compositions from obsolete warheads or the like. The explosive filler can be reclaimed.
    Type: Grant
    Filed: April 20, 1976
    Date of Patent: April 19, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Paul L. O'Neill, Juan L. Hooper
  • Patent number: 4014720
    Abstract: Flexible, self-supporting explosive compositions composed essentially ently of a particulate high explosive RDX, HMX and/or PETN and a high viscosity nitrocellulose binder plasticized with triethyleneglycol dinitrate.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: March 29, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Franklin B. Wells
  • Patent number: 4014719
    Abstract: Flexible, self-supporting explosive compositions composed essentially ently of a particulate high explosive RDX, HMX and/or PETN and a nitrostarch binder plasticized with trimethylolethane trinitrate and/or triethyleneglycol dinitrate.
    Type: Grant
    Filed: October 23, 1975
    Date of Patent: March 29, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Franklin B. Wells
  • Patent number: 4012246
    Abstract: A cap-sensitive slurry explosive capable of propagating a high order detonation in thin layers and which has a high degree of safety for a cap-sensitive explosive. The slurry consists of a superfine grained explosive, suspended in an energetic, but non-self-explosive liquid matrix and contains no liquid explosive ingredient. The slurry resists dispersion in a variety of liquids including water and crude oil. In the preferred embodiments the slurries include penetaerythritol tetranitrate (PETN) in super fine particles, having an average particle size of 6.5 microns.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: March 15, 1977
    Assignee: Teledyne McCormick Selph, an operating division of Teledyne Industries, Inc.
    Inventor: Charles D. Forrest
  • Patent number: 4009060
    Abstract: The present invention relates to a primer composition formed of TNT, DNT (2,4-dinitrotoluene) and fine particle size PETN (pentaerythritol tetranitrate) for use with explosive charges. This composition is extruded in melt condition into primer cartridges. Any topping-off operations are eliminated since practically no shrinkage occurs as the melt cools to form a solid casting in the cartridge.
    Type: Grant
    Filed: September 12, 1975
    Date of Patent: February 22, 1977
    Assignee: Atlas Powder Company
    Inventor: Harold F. Bluhm
  • Patent number: 3998597
    Abstract: An apparatus to allow manufacture of fine particle PETN (penetaerythritol tetranitrate) having a sensitivity to propagate in thin layers in slurry and having a particle size which presents advantages in safety of handling and ability to obtain higher solids loading in slurries and flexible explosive binder systems due to a lower surface area, and a wider particle size distribution, compared to previous PETN of similar sensitivity to propagation in thin layers, i.e., as the major explosive ingredient in flexible sheet explosive formulations, and to propagation as a high velocity detonation in small core loads, i.e., 1 grain/ft., in mild detonating fuse, confined detonating fuse, and the like.
    Type: Grant
    Filed: February 25, 1974
    Date of Patent: December 21, 1976
    Assignee: Teledyne McCormick Selph
    Inventor: Charles D. Forrest
  • Patent number: 3951706
    Abstract: 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: Grant
    Filed: July 3, 1962
    Date of Patent: April 20, 1976
    Inventor: Judson B. Eldridge
  • Patent number: 3943017
    Abstract: This invention relates to self-supporting, water-resistant explosive comptions composed essentially entirely of explosively active ingredients and methods for making same. The compositions consist essentially of a particulate high explosive and a high viscosity nitrocellulose binder plasticized with TMETN (trimethylolethane trinitrate) without the use of other plasticizers.
    Type: Grant
    Filed: March 26, 1974
    Date of Patent: March 9, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Franklin B. Wells
  • Patent number: 3943209
    Abstract: A method for producing high density and high energy solid propellants conting of a solid inorganic oxidizing salt, a binder and a granular organic explosive comprising, the suspension of said ingredients in an organic solvent with agitation at ambient temperature to form a colloid, extruding the colloid, and raising the temperature to cure the grain, and the mixing of said propellant ingredients under vacuum, raising the temperature until a bulk viscosity of approximately 60,000 to 70,000 centipoises is reached, pouring said ingredients into a mold under vacuum, and curing the grains until the charge solidifies.
    Type: Grant
    Filed: January 11, 1968
    Date of Patent: March 9, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Arthur LoPresti, Robert P. Baumann