Abstract: A perfluoroalkylene .alpha.,.omega.-diacetylene compound having a fluorocarbon chain of from 5 to about 20 carbon atoms between two acetylene end groups, and a method of forming same by first reacting perfluoroalkylene diiodide having the formula I(CF.sub.2).sub.n I, wherein n is a whole number from 5 to about 20, inclusive with bis(trimethylsilyl)acetylene, and converting the reaction product to the diacetylene with KF. The diacetylene has the general formula HC.tbd.C(CF.sub.2).sub.n C.tbd.CH, wherein n is as set forth above, and it can be polymerized to produce a clear, hard, cross-linked resin suitable for use as a coating on bearings and in the manufacture of aircraft windshields. Monofunctional counterparts of the HC.tbd.C(CF.sub.2).sub.n C.tbd.CH compounds can be formed by substituting perfluoroalkyl primary iodides for the diiodides in the above-described reaction.

Abstract: Geminal dinitro compounds are prepared by reacting an organic nitro compound having a replaceable hydrogen on the carbon to which the nitro group is attached with a source of nitrite ions in the presence of an oxidizing agent and a catalytic amount of an alkali metal ferricyanide.

Abstract: 3-Azidooxetane, ##STR1## is prepared by reacting 3-oxetyl p-toluenesulfonate with an alkali metal azide in a polar solvent. In the presence of a Lewis acid catalyst, 3-azidooxetane polymerizes to form a poly(3-azidotrimethylene ether) of the formula ##STR2## which can be cured with diisocyanates to form energetic, rubbery polyurethanes.

Abstract: A process for preparing 3-hydroxyoxetane comprising the following steps in order(1) reacting a carboxylic acid of the formula CH.sub.3 (CH.sub.2).sub.

Abstract: A perfluoroalkylene .alpha.,.omega.-diacetylene compound having a fluorocarbon chain of from 5 to about 20 carbon atoms between two acetylene end groups, and a method of forming same by first carrying out the addition reaction of a perfluoroalkylene diiodide having the formula I(CF.sub.2).sub.n I, where n is a whole number from 5 to about 20, inclusive, and trimethylsilyacetylene in the presence of a free radical catalyst to form (CH.sub.3).sub.3 SiIC.dbd.CH(CH.sub.2).sub.n CH.dbd.CISi(CH.sub.3).sub.3 ; subjecting the (CH.sub.3).sub.3 SiIC.dbd.CH(CF.sub.2).sub.n CH.dbd.CISi(CH.sub.3).sub.3 to dehydrohalogenation with DBU under dry conditions to obtain (CH.sub.3).sub.3 SiC.tbd.C(CF.sub.2).sub.n C .tbd.CSi(CH.sub.3).sub.3 ; and removing the silyl group from the latter compound with excess DBU or KF to yield HC.tbd.C(CF.sub.2).sub.n C.tbd.CH as the perfluoroalkylene .alpha.,.omega.-diacetylene compound. The HC.tbd.C(CF.sub.2).sub.n C.tbd.

Abstract: Dimethyl 2,2,2-trinitroethylmalonate, diethyl 2,2,2-trinitroethylmalonate, imethyl 2-fluoro-2,2-dinitroethylmalonate, diethyl 2-fluoro-2,2-dinitroethylmalonate, dimethyl 2,2-dinitropropylmalonate, diethyl 2,2-dinitropropylmalonate, and methods of preparing these compounds. These compounds are useful as energetic additives to propellants and explosives.

Abstract: 3-Fluoro-3-nitrooxetane is prepared by a method which comprises reacting luoro-2-nitro propanediol with trifluoro methane sulfonic anhydride, separating the reaction product and then further reacting the reaction product with a base. The oxetane may be polymerized to form a nitro containing polyether which is useful as a binder material for explosives or propellants.

Abstract: A method for producing an explosive ingredient bis-(3,3-dinitrobutyl)-polloxane is described.

Abstract: A novel process for preparing 2-fluoro-2-nitro-3-propanediol by reacting diethyl fluoronitromalonate with formaldehyde in the presence of an alkali metal hydroxide.

Abstract: 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.degree. C. to about 50.degree. C. Primary aliphatic perchlorates and trifluoromethanesulfonates are excellent alkylating agents for amines, alcohols, and nitroalcohols.

Abstract: Energetic silicon compounds of the general formulae ##STR1## The gem dinitro compounds are prepared from alkyl bromide silanes by sod nitrite displacement and oxidative nitration. The compounds are then fluorinated. To prepare the polysiloxanes, phenyl blocking groups are used during synthesis of the fluoro dinitro moiety and are then replaced with bromine and the monomer is hydrolyzed.

Abstract: A method for producing 1,3-bis (2,2,2-fluorodinitroethoxy) -2,2-bis (difluoramino) propane by effecting a reaction between difluoramine and 1,3-bis(2,2,2-fluorodinitroethoxy)-2-propanone in a strong acid medium to produce a new high energy plasticizer for advanced energetic propellants.

Abstract: Derivatives of perbromic acid of the formula: XBrO.sub.4 wherein X is Ag, H.sub.3).sub.2 CH, or (CH.sub.3).sub.2 C.sub.2 H.sub.3 prepared by a synthesis of silver perbromate through the reaction of dilute aqueous perbromic acid with silver oxide at a temperature from 0.degree. to 50.degree. C, followed by a removal of water and by a synthesis of isopropyl or isobutyl perbromate through the reaction of anhydrous silver perbromate suspended in a fluid selected from the class consisting of carbon tetrachloride, cyclohexane, and 1,1,2-trichlorotrifluoroethane with an alkyl bromide at a temperature from -25.degree. to 0.degree. C. Isopropyl and isobutyl perbromates are useful as oxidizing agents for alcohols.

Abstract: This disclosure teaches a method for recovering reaction gases from a hydrocarbon-cooled converter which is bottom blown by oxygen. The converter comprises a vessel which is tippable between an upright position and an inclined position. The vessel is provided with bottom tuyeres and a cleaning system for the reaction gases. The method is characterized by the fact that, on tipping of the vessel, nitrogen is introduced instead of the oxygen through the bottom tuyeres whereby flushing of the cleaning system is effected. Detection means (preferably a gas analyzer) are provided to detect a predetermined increase in hydrogen content of the reaction gases during blowing and a setting ring is connectable to the vessel in sealed engagement with a suction line which forms part of the cleaning system. Control means are responsive to the detection means and are operable to connect the setting ring to the vessel and for tipping the vessel so as to flush the cleansing system.

Abstract: A gas collector hood is located close to the mouth of a converter vessel and has a diameter which is not much greater than the mouth of the vessel. A mixture of oxygen together with entrained powdered materials based on process requirements and a hydrocarbon fluid as cooling agent are blown through tuyeres in the bottom of the vessel and diffuse through the hot metal in the vessel. The inherently finer dust produced from the bottom-blown oxygen process requires that for proper air pollution control a non-combustion system be used to take advantage of the increased agglomerating properties of iron oxides when produced in reducing atmospheres. When blowing is initiated in this process carbon monoxide and hydrogen evolve immediately and in order to render the gases inert, air is aspirated into the gas collector hood so that an inert gas plug is formed which purges the exhaust system of combustion air.

Abstract: This disclosure teaches a process for avoiding formation of smoke and flames in bottom blown converters upon charging of scrap and pig iron, deslagging and casting. Inert gas, preferably nitrogen, is blown into the converter vessel through bottom tuyeres both during introduction of the scrap and pig iron in a tipped position of the vessel and in the vessels erected position.

Abstract: This disclosure teaches a vertically adjustable water cooled dome ring between an upper rim of a crucible and its gas trap. The gas trap has a dome with a dome opening which substantially conforms in cross section to a mouth defined by the upper rim of the crucible. The upper rim is provided with a downwardly and inwardly inclined lip. The dome ring has a seating collar adapted to engage the upper rim in a substantially gas tight manner. The seating collar is adapted to engage the upper rim about the mouth outward and in proximity of the inclined lip. Manifolds for cooling water are kept out of contact with the upper rim. A labyrinth passage is provided for entry of air between the dome and the seating collar.