Component Base Contains An Inorganic Explosive Or Inorganic Thermic Salt Patents (Class 149/7)
  • Patent number: 4163681
    Abstract: This patent describes a novel desensitized explosive wherein a normally sitive solid explosive material is coated with an effective desensitizing amount of a phlegmatizing agent which contains functional groups reactive with one or more ingredients conventionally used in forming a thermally stable, crosslinked solid composite explosive. The present invention also includes thermally stable, crosslinked solid composite explosive in which said desensitized explosives are an integral part. Still further this invention includes the method of coating the as-received explosive material with said phlegmatizing agent, preferably in a drying vessel at elevated temperatures.
    Type: Grant
    Filed: April 15, 1970
    Date of Patent: August 7, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Julius Rothenstein, Samuel Goldhagen
  • Patent number: 4124418
    Abstract: Ammonium perchlorate particles having strongly adherent wettable coatings are made by treating the particles with stong amines that displace ammonia to form amine perchlorates at the particle surfaces. Silanylamines are preferred since after amination of the perchlorate the silane groups can be hydrolyzed to siloxanes having good wettability by liquid polymeric propellant binders. The coated perchlorate can be used to produce solid propellants having improved mechanical properties and burning characteristics.
    Type: Grant
    Filed: April 19, 1973
    Date of Patent: November 7, 1978
    Assignee: Thiokol Corporation
    Inventors: Russell Reed, Jr., Robert E. Meyer, Graham C. Shaw, Richard P. Cornia
  • Patent number: 4115166
    Abstract: 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: Grant
    Filed: January 12, 1970
    Date of Patent: September 19, 1978
    Assignee: Aerojet-General Corporation
    Inventors: Edwin L. Lista, Richard B. Hartupee, Ralph K. Manfred, Paul L. O'Neil
  • Patent number: 4111728
    Abstract: A smokeless gas generator composition with an oxygenated binder such as a polyester or a polyether allows higher binder content with less solid oxidizer additives such as guanidine nitrate or ammonium nitrate and allows the composition to be cast.
    Type: Grant
    Filed: February 11, 1977
    Date of Patent: September 5, 1978
    Inventor: Jawaharlal Ramnarace
  • Patent number: 4097317
    Abstract: Increasing the stability of composite energetic compositions containing ctalline high-energy nitrates or nitrites by the inclusion of saligenin into the composition.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: June 27, 1978
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Joel M. Schnur, Richard S. Miller, James P. Sheridan, A. D. Britt
  • Patent number: 4076562
    Abstract: Explosive compositions, sensitive to a number six blasting cap, comprise a liquid, highly combustible fuel and supported air entrapment material in an amount such that from about one to about 95 volume percent of the total explosive mixture is air.
    Type: Grant
    Filed: November 5, 1976
    Date of Patent: February 28, 1978
    Inventor: Richard Wells Forsythe
  • Patent number: 4038115
    Abstract: Mechanical properties of composite modified double-base propellant are improved by coating fillers for the propellant with a crosslinked, binder insoluble coating having reactive surface isocyanate groups. The reactive isocyanate groups become chemically bound to the nitrocellulose binder of the propellant during propellant cure. Failure of the propellant at the binder-filler interface under conditions of stress is substantially reduced.
    Type: Grant
    Filed: October 7, 1969
    Date of Patent: July 26, 1977
    Assignee: Hercules Incorporated
    Inventor: Henry C. Dehm
  • Patent number: 4019933
    Abstract: The reaction products formed from tri-functional aziridinylphosphine oxides r their derivatives reacted with monofunctional carboxylic acids, the tri-aziridinyl derivatives of triazine, the tri-aziridinyl derivatives of benzenetriacyl, the aziridine compound N-phenethylaziridine, and selected alkyl diaziridine compounds are representive of the aziridine compounds which are utilized in isocyanate curable composite propellant compositions to extend usable pot life required for mixing and processing of the specified compositions. The compositions are comprised of a binder of hydroxy terminated liquid polymer systems, (e.g. hydroxy terminated polybutadiene and the like) selected plasticizers, optional metal fuel, and the inorganic oxidizer, ammonium perchlorate, that is substantially of very fine particle size (less than 20 microns).
    Type: Grant
    Filed: July 27, 1973
    Date of Patent: April 26, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Marjorie T. Cuksee, Henry C. Allen
  • Patent number: 3998676
    Abstract: Aluminum particles are coated with a composition containing 84 .+-. 3 wei percent desensitizing wax, 2 .+-. 0.5 weight percent lecithin and 14 .+-. 1 weight percent nitrocellulose prior to being mixed with other ingredients of an explosive composition in a bomb manufacturing process in order to eliminate the possibility of dust explosions occurring during the bomb manufacturing process.
    Type: Grant
    Filed: July 29, 1974
    Date of Patent: December 21, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Richard A. Plauson, deceased, by Mary E. Plauson, legal representative, William McBride
  • Patent number: 3985592
    Abstract: 1. A surface-inhibited propellent charge comprising a charge of propellent composition having bonded to at least part of its surface an inhibiting layer comprising silicone rubber supported on biaxially-stretchable glass fabric.
    Type: Grant
    Filed: June 11, 1968
    Date of Patent: October 12, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Clarence Bertram Hackett, James Jack, Richard Paton Reynolds
  • Patent number: 3984264
    Abstract: This patent describes high energy propellant ingredients in particulate f containing thereon a crosslinked siloxane polymer envelope or coating from an organic hydrolyzable silane having a functionality greater than 2. This patent also describes a method of providing a cross-linked siloxane polymer coating on finely divided high energy propellant ingredients by suspending the finely divided ingredients in an inert solvent, introducing therein a hydrolyzable organic silane having a functionality greater than 2 and subsequently isolating the polymer coated product in a dry free-flowing particulate form after stripping of the solvent.
    Type: Grant
    Filed: April 1, 1969
    Date of Patent: October 5, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Bernard B. Lampert
  • Patent number: 3974004
    Abstract: Trioctylphosphine oxide and tributylphosphine oxide are representative of e phosphine oxide compounds which are utilized in isocyanate curable composite propellant compositions to extend usable pot life required for mixing and processing of the specified compositions. The compositions are comprised of a binder of hydroxy terminated liquid polymer systems, (e.g. hydroxy terminated polybutadiene and the like) optional selected plasticizers, optional metal fuel, and the inorganic oxidizer, ammonium perchlorate, that is substantially of very fine particle size (less than 20 microns).
    Type: Grant
    Filed: February 4, 1974
    Date of Patent: August 10, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Marjorie T. Cucksee, Henry C. Allen
  • Patent number: 3956038
    Abstract: Pyrotechnic compositions having a decreased susceptibility to external influences are obtained by suspending pyrotechnic particles in a dilute solution of a coating polymer and adding a second polymer which is more soluble in the solvent, so that microdroplets of the coating polymer are formed, completely enclosing the pyrotechnic particles. The coated particles are hardened by exposure to air, optionally in the presence of a hardening catalyst.
    Type: Grant
    Filed: March 14, 1974
    Date of Patent: May 11, 1976
    Assignee: Etat Francais
    Inventors: Jean Rene Duguet, Marie Louise Sanmartin
  • Patent number: 3954526
    Abstract: Sub-micron particle size ammonium perchlorate particles are made by mixing a solution of ammonium perchlorate in a volatile liquid with a second less volatile liquid which is miscible with the first liquid and is a non-solvent for ammonium perchlorate. The resulting mixture is heated to vaporize the volatile liquid and form a suspension of fine ammonium perchlorate particles in the second liquid. A particle coating agent soluble in the second liquid is used to limit particle growth. The particles are coated with the coating agent and may be recovered from the suspension by vaporization of the second liquid to form a powder, or by partial evaporization of the second liquid to form a concentrated slurry or paste in which the ammonium perchlorate is the disperse phase. The ultra-fine particles formed are suitable for use in propellant formulations.
    Type: Grant
    Filed: February 22, 1971
    Date of Patent: May 4, 1976
    Assignee: Thiokol Corporation
    Inventors: Grafton F. Mangum, Rudy E. Rogers, Edward J. Schreck
  • Patent number: 3953257
    Abstract: A method for preparing aziridine coated ammonium perchlorate (AP) of weight edian diameters (WMD) ranging from about 0.25 to about 5.0 micrometers is disclosed. The method employs either an unlined stainless steel or a polyurethane lined vibro-energy grinding mill wherein a high purity aziridine compound is used as the grinding aid and the coating agent for the AP. The coated AP product extends the pot-life for hydroxyterminated polybutadiene (HTPB) propellant formulations.
    Type: Grant
    Filed: September 7, 1973
    Date of Patent: April 27, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Orval E. Ayers, Hiram W. H. Dykes, Bernard J. Alley
  • Patent number: 3931374
    Abstract: The fuel block contains an energizing metallic powder, each particle of wh is surface coated with discrete particles of a polyfluoroethylene compound, preferably polytetrafluoroethylene, capable of reacting with the associated metal particle at a temperature below the combustion temperature of the block. The fuel block may be formed from hybrid propergols.
    Type: Grant
    Filed: October 9, 1970
    Date of Patent: January 6, 1976
    Assignee: Office National d'Etudes et de Recherches Aerospatiales (O.N.E.R.A.)
    Inventors: Helene Denise Moutet nee Layrisse, Maurice J. Pugibet, Jean-Jacques Scherchen