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| Number | Title | Issue Date |
| 4776993 | Extrusion method for obtaining high strength composite propellants A method of manufacturing composite propellants which include compounding e propellant with an extended final mix cycle, partially curing the propellant mixture to a specified hardness, and extruding the propellant under certain conditions.... | 10/11/1988 |
| 4259471 | Polyphenylether-bridged polyphthalocyanine Polyphthalocyanine resins are obtained by heating, at a temperature from ut 240° C. to 305° C., one or more bisorthodinitriles of the general formula: ##STR1## wherein x is from 1 to 10 and the phenyl groups are attached at the meta or para p... | 03/31/1981 |
| 4238464 | Air revitalization materials Revitalization of air by circulation thereof through a quantity of a salt zirconium, titanium or boron and oxygen in the peroxide or higher positive valence state and by mixtures thereof with an alkali metal or alkaline earth hydroxide, oxide, peroxide, ... | 12/09/1980 |
| 4238601 | Perfluorinated aliphatic phenoxy bisorthodinitriles and polyphthalocyanines therefrom A bisorthodinitrile of the formula: ##STR1## wherein R' and R" are perfluorinated alkyls having from 1 to 4 carbon at, and the phenyl groups are attached at the para position. A polyphthalocyanine resin is prepared by heating one or more of these ... | 12/09/1980 |
| 4234712 | Polyphthalocyanine resins Polyphthalocyanine resins are obtained by heating one or more bisorthodiniles of the general formula: ##STR1## wherein R represents ##STR2## at temperature at or above the melting point thereof. The resins are useful in high-temperature st... | 11/18/1980 |
| 4226801 | Terminated bis(3,4-dicyanophenoxy) alkanes Terminated bis(3,4-dicyanophenoxy) alkanes, wherein the alkylene chain is om 2 to 30 carbon atoms in length, is prepared by the reaction of 4-nitrophthalonitrile with a terminated alkane diol at elevated temperatures. A polyphthalocyanine resin is obtaine... | 10/07/1980 |
| 4223123 | Aliphatic phenoxy polyphthalocyanine Polyphthalocyanine resins are obtained by heating, at a temperature from ut 260° C. to about 295° C., one or more bisorthodinitriles of the general formula: ##STR1## wherein R' is an alkyl radical with 1 to 6 carbon atoms, R" is hydrogen or a... | 09/16/1980 |
| 4209458 | Fluorinated phthalonitriles A fluorinated phthalonitrile of the general formula: ##STR1## wherein R' is F or CF3, R is (CF2)p, m is 1 or 2, n is 1 or , p is an integer from 3 to 30, x is 1, 2, or 3, y is 1, 2, or 3 and z is 0 or 1 is prepared by ... | 06/24/1980 |
| 4200669 | Laser spraying A method and apparatus for spraying a surface which comprises: introducing into a laser beam, a powder with a vapor pressure from 10-2 to 10-1 atm. in excess of the ambient pressure at a temperature up to about 500° C. above the mel... | 04/29/1980 |
| 4195166 | Alkanediamide-linked polyphthalocyanines coordinated with SnCl2 A polphthalocyanine with the structure formula: ##STR1## prepared by mixing SnCl2.2H.sub.2 O with N, N'-bis(3,4-dicyanophenyecane diamide of which the structural formula is: ##STR2## heating the mixture to a temperature from about 17... | 03/25/1980 |
| 4175613 | Method of storing energy Storage of thermal energy in a ternary mixture of salts which comprises from 22.5 to 26.5 weight percent of sodium chloride, from 18.5 to 22.5 weight percent of potassium chloride and from 53.0 to 57.0 weight percent of magnesium chloride.... | 11/27/1979 |
| 4176040 | Coal liquefaction A method for converting coal to liquid hydrocarbons or oil-soluble solids mprises the steps of contacting said coal with oxygen for at least 15 minutes, at a temperature from about 90° to about 225° C., heating the oxidized coal to a temperature from ab... | 11/27/1979 |
| 4172775 | Photochemical separation of metals in solution by precipitation following reduction or oxidation Mixtures of metals are separated by forming salts of the metals which exhibit photoredox activity with an anion selected to provide insoluble salts at one oxidation state and soluble salts at another oxidation state, forming a solution of these salts with... | 10/30/1979 |
| 4165332 | Preparation of aliphatic perchlorates and of trifluoromethane sulfonates The formation of predominantly primary aliphatic perchlorates and trifluoethanesulfonates by reacting the corresponding silver salt with primary aliphatic halides in benzene at a temperature from about 5° C. to about 50° C. Primary aliphatic perchlorat... | 08/21/1979 |
| 4160033 | Method for the control of mosquitos by the use of film-forming materials A method of controlling mosquitos by adsorbing onto the surface of a body of water suitable for breeding mosquitos a monomolcular or duplex film of an organic material which reduces the surface tension of the body of water to 30 dynes/cm or less.... | 07/03/1979 |
| 4157358 | Fluorinated network polymers A random fluorinated polymer of the general equation: ##STR1## wherein x is an integer from 1 to 4, y is an integer from 0 to 4, z is 1 more, R' is selected from the group consisting of the 1,3 and the 1,4 isomers of --OC(CF3)2... | 06/05/1979 |
| 4139439 | Hydrogen isotope separation A method of separating isotopes of hydrogen which comprises subjecting a ture of methane and isotopes of hydrogen in a methane to hydrogen mole ratio from about 1000:1 to about 1:10 to a glow electrical discharge from about 10-3 to about 50eV ... | 02/13/1979 |
| 4136107 | Bisorthodinitriles Compounds of the general formula: ##STR1## wherein R1 is a radical of an isomer of phthalaldehyde; R2 is a adical of an isomer of an aromatic dialdehyde selected from the class consisting of phthalaldehyde, naphthalene dialdehyde... | 01/23/1979 |
| 4133862 | Method of inhibiting and/or eradicating marine fungal growth with obtusastyrene Marine fungal growth is inhibited and/or eradicated in wood by contacting e wood with obtusastyrene whose formula is: ##STR1##... | 01/09/1979 |
| 4133935 | Coated electrodes for underwater metal working A waterproof electrode useful in metal-working is obtained by coating the ectrode with a polyolefin selected from the class consisting of polyethylene, polypropylene, polybutylene and mixtures thereof at a thickness from 0.25 cm to 0.80 cm by a method whi... | 01/09/1979 |
| 4132842 | Silicon-phthalocyanine-siloxane polymers A silicon-phthalocyanine-siloxane polymer having the formula ##STR1## WHEREIN Pc is a phthalocyanine nucleus, Ph is a phenyl group, n is an integer from 1 to 8, and x is an average value up to 20, is prepared by a method including a reaction of a pht... | 01/02/1979 |
| 4132681 | Fluorinated polyether network polymers A random fluorinated polymer of the general formula: ##STR1## wherein x is an integer from 1 to 4, y is an integer from 1 to 4, z is 1 more, R' is selected from the group consisting of the 1,3 and the 1,4 isomers of --OC(CF3)2 ... | 01/02/1979 |
| 4131444 | Method for increasing the strength and density of lead titanate ceramic bodies Strengthened and densified ceramic bodies are produced by hot pressing lead itanate powder into a lead titanate ceramic at a pressure from 1000 to 5000 psi and at a temperature from 700 to 1100° C if the atmosphere is reducing or from 700 to 1200° C if t... | 12/26/1978 |
| 4131609 | Silicon-phthalocyanine-siloxy monomers A silicon-phthalocyanine-siloxy monomer having the formula: wherein X is a hydroxyl group or unreido group having the formula: ##STR1## Pc is a phthalocyanine nucleus, R' and R" are alkyl groups having from 1 to 8 carbon atoms, and r is an integer from 1 ... | 12/26/1978 |
| 4124408 | Method of removing deposits on refrigeration system surfaces A polymeric residue with one or more metals, salts, and oxides mixed therein, deposited on refrigeration system surfaces by a circulating halogenated hydrocarbon refrigerant, is removed from a surface by contacting the residue with a saturated aqueous sol... | 11/07/1978 |
| 4124671 | Method for strengthening PZT transducers A method for strengthening lead zirconate-lead titanate ceramic transducers hich comprises heating the transducer at a temperature from 900° C to 1000° C in a nonreducing atmosphere containing at least 20 volume percent of oxygen for at least one hour.... | 11/07/1978 |
| 4119556 | Thermal energy storage material comprising mixtures of sodium, potassium and magnesium chlorides Storage of thermal energy in a ternary mixture of salts which comprises from 22.5 to 26.5 weight percent of sodium chloride, from 18.5 to 22.5 weight percent of potassium chloride and from 53.0 to 57.0 weight percent of magnesium chloride.... | 10/10/1978 |
| 4116945 | Electrical conducting phthalonitrile polymers Compounds of the general formula: ##STR1## wherein R1 is selected from the class consisting of ##STR2## R2 is an isomer of an aromatic dialdehyde selected from the class cisting of phthalaldehyde, naphthalene dialdehyde, p... | 09/26/1978 |
| 4113646 | Air revitalization compositions Air revitalization compositions containing potassium superoxide which furr comprises from about 2 to about 10 weight percent of lithium monoxide, from about 0 to about 2 weight percent of silicon dioxide, and either from 5 to 10 weight percent of lithium... | 09/12/1978 |
| 4104452 | Vinyl polymer-fluoroalkylether oligomer composition A vinyl polymer-fluoroalkylether oligomer composition useful as a structu material, filament, adhesive, or abhesive which comprises: A vinyl polymer selected from the class consisting of polyvinylchloride, polyvinylidene chloride, copolymers of vinylidene chl... | 08/01/1978 |
| 4102873 | Electrical conducting phthalonitrile polymers Compounds of the general formula: ##STR1## wherein R1 is an isomer of phthalaldehyde; R2 is an isomer of an romatic dialdehyde selected from the class consisting of phthalaldehyde, naphthalene dialdehyde, phenanthrene dialdehyde,... | 07/25/1978 |
| 4097317 | Desensitizing agent for compositions containing crystalline high-energy nitrates or nitrites Increasing the stability of composite energetic compositions containing ctalline high-energy nitrates or nitrites by the inclusion of saligenin into the composition.... | 06/27/1978 |
| 4097294 | Preparation of ceramics A method for preparing ceramic material from a polymer which comprises selecting a polymer from the class consisting of poly(diorganosilanes), poly(haloorganosilanes), poly(carbosilanes), polysilazanes, polycarbocarboranes, and polyborazines; heating said... | 06/27/1978 |
| 4070463 | Antimotion sickness remedy A pharmaceutical composition for the prevention of motion sickness which prises two parts of promethazine hydrochloride and one part of 1-ephedrine sulfate.... | 01/24/1978 |
| 4069059 | Silicon nitride-zirconium silicate ceramics A dense and high temperature-oxidation-resistant ceramic prepared from silicon nitride and zirconium silicate in an amount from 3 to 15 weight percent of silicon nitride.... | 01/17/1978 |
| 4065509 | Synthesis of ଲ-methyl derivatives of 2,4-dicarba-closo-heptaborane-7 The ଲ-methylation of 2,4-dicarba-closo-heptaborane-7 through the reaon of methyl chloride with the parent carborane in the presence of metal trichloride selected from the group consisting of aluminum chloride and ferric chloride in a methyl chlorid... | 12/27/1977 |
| 4057569 | Bisorthodinitriles Compounds of the general formula: ##STR1## wherein R1 is selected from the class consisting of ##STR2## R2 is an isomer of an aromatic dialdehyde selected from the class cisting of phthalaldehyde, naphthalene dialdehyde, p... | 11/08/1977 |
| 4056560 | N,N'-bis(3,4-dicyanophenyl) alkanediamides N,N'-bis(3,4-dicyanophenyl) alkanediamides of the general formula: ##STR1## wherein R = (CH2)n-2 and (CH2)x CH(CH3)(CHsub.y ; n = 3 to 20; x = 1 to 8; and y = 1 to 8, prepared by reac... | 11/01/1977 |
| 4045408 | Fluoro-anhydride curing agents and precursors thereof for fluorinated epoxy resins Fluoro-anhydride curing agents for fluorinated epoxy resins, especially for highly fluorinated epoxy resins selected from the class consisting of hydroxyperfluoroalkyl phthalic anhydride, hydroxyperfluoroalkyl pyromellitic dianhydride, and mixtures thereo... | 08/30/1977 |
| 4039023 | Method and apparatus for heat transfer, using metal hydrides Heat transfer and thus temperature control of an environment is achieved by a method and apparatus which comprises withdrawing hydrogen from a first hydride reaction system in a two phase equilibrium at a certain temperature and pressure thereby causing a... | 08/02/1977 |
