Abstract: A process is disclosed for the conversion of halogenated methanes of the formula CCl.sub.y H.sub.2-y F.sub.2 (wherein y is 1 or 2) to a mixture of conversion products. The process involves reacting certain halogenated hydrocarbon feeds and hydrogen (wherein said halogenated methanes are at least one mole percent of the halogenated hydrocarbon feed) in a reaction vessel of alumina, silicon carbide or at least one metal selected from gold, chromium, aluminum, molybdenum, titanium, nickel, iron, cobalt, and their alloys at a temperature of from about 500.degree. C. to 800.degree. C. and a pressure from abut 101 kPa to 7000 kPa to produce a mixture of conversion products of said halogenated methanes which comprises at least 5 mole percent C.sub.2 H.sub.2 F.sub.4, wherein the mole ratio of CH.sub.2 FCF.sub.3 to CHF.sub.2 CHF.sub.2 in said C.sub.2 H.sub.2 F.sub.4 is at least about 1:9.

Abstract: The invention relates to a process for the preparation of saturated hydrofluorocarbons by hydrogenating at least one (hydro)fluorocarbon of the formula (I)R.sub.f --CH.sub.n Cl.sub.c Br.sub.d I.sub.e (I)in whichR.sub.f is C.sub.a F.sub.(2a-b)+1 H.sub.b where a is 1-4 and b is 0-4,n is 0-2c is 0-3d is 0-3e is 0-3c+d+e is 3-n,catalytically with hydrogen at elevated temperature.

Abstract: Chloromethane compounds including carbon tetrachloride and the chlorofluoromethane compounds, such as dichlorodifluoromethane, can be catalytically hydrodechlorinated, e.g., in the case of dichlorodifluoromethane to monochlorodifluoromethane and/or difluoromethane, by treatment with hydrogen in the presence of a transition metal carbide catalyst, for example, a Group IVB metal carbide, such as tungsten carbide, supported on an oxidic support, such as alumina, optionally with a passivating layer of ceramic, such as silicon carbide, between the oxidic support and catalyst. The catalyst preferably has a surface area of no less than about 1 m.sup.2 /gm.

Abstract: A dimer of fluorine-containing ethane can be obtained in a good selectivity by contacting fluorine-containing ethane of the formula:CF.sub.3 --CClX.sup.1 X.sup.2 (I)wherein each of X.sup.1 and X.sup.2 is a fluorine or chlorine atom to a nickel catalyst.

Abstract: The invention relates to a process for the reaction of fluorinated or chlorinated aromatics with electrophiles at the ortho position relative to the fluorine or chlorine atom, characterized in that a strong base is added to a mixture of the fluorinated or chlorinated aromatic and the electrophile.

Abstract: A purification method of a fluorine-containing alkylethylene comprises reacting the fluorine-containing alkylethylene with powdered metallic zinc in the presence of an aqueous acetic acid solution. By this method, fluorine-containing alkyl iodide and fluorine-containing alkylethyl iodide, contained as impurities in the fluorine-containing alkylethylene, can be removed effectively, for example, to a level of 1 ppm or below.

Abstract: Novel 1,1,2-trifluorodienes, which have a minimum of seven carbon atoms and may contain in their molecule a phenylene or a methylphenylene moiety, are useful monomers, that can be polymerized in the presence of either free radical or coordination catalysts and can undergo selective reactions such, as for example, epoxidation of the vinyl (nonfluorinated) double bond. The resulting perfluorovinyl epoxy compounds also are useful monomers, which can undergo polymerization to useful materials.

Abstract: An improved synthesis of carbon fluoride CF.sub.x, and carbon fluoride chloride, (C.sub.y F.sub.x Cl.sub.z).sub.n, is described. Direct fluorination of the intermediate (C.sub.y F.sub.x Cl.sub.z).sub.n (x.ltoreq.0.7, y.ltoreq.1 and z.ltoreq.0.1) in the absence of chlorine produces, either CF.sub.x (x.gtoreq.1) or (C.sub.y F.sub.x Cl.sub.z).sub.n (x.gtoreq.0.9, y=1, z.ltoreq.0.01) in as brief a period as 1 hour. The final CF.sub.x product is novel and exhibits improved properties compared to CF.sub.x made via conventional methods. The novel process for producing carbon fluoride chloride is more economical than prior art methods.

Abstract: A process for coupling two low molecular weight telomers of chlorotrifluoroethylene comprises reacting the telomers with hydrogen in the presence of an effective amount of a catalyst to form a coupled olefin. The catalyst comprises palladium, platinum, rhodium, ruthenium, Raney nickel, Raney cobalt, and mixtures thereof, either supported or unsupported. The olefin can be fluorinated using a suitable fluorinating agent, such as chlorine trifluoride, to form a saturated telomer.

Abstract: A process for the coupling of a chloroperfluoroalkane having a --CFCl.sub.2 moiety which comprises heating the alkane at a temperature of about 150.degree. to 260.degree. C. in the presence of at least about 0.1 times the molar amount each of copper and zinc at a mole ratio of copper:zinc from about 2:1 to 1:2. The product is obtained in relatively high yield and conversion.

Abstract: A solid lubricant, consisting of solid perfluorocarbons, with linear or substantially linear carbon atoms chain, containing from 10 to 20 carbon atoms and having a value of surface tension ranging from 13 to 15 dyne/cm, is obtained by dimerization or co-dimerization of perfluorocarbonsulphonyl halogenidesC.sub.n F.sub.2n+1 SO.sub.2 X(in which X represents an atom of halogen), having a linear or substantially linear chain of carbon atoms and bearing the --SO.sub.2 X group at one end of the chain, operating at high temperature, with short reaction times, and preferably in the presence of a metal catalyst.The solid perfluorocarbon lubricant can be used, if desired as a mixture with paraffinic wax, on sliding surfaces, particularly consisting of a polymeric material either porous or made porous.

Abstract: A substantially pure mixture of tetrabromotetrachloroperfluorododecanes of the empirical formula C.sub.12 Br.sub.4 Cl.sub.4 F.sub.18, of which the isomer ##STR1## is a significant part, is prepared by oligomerizing bromotrifluoroethylene in the presence of chlorine and distilling, thereby obtaining a substantially pure mixture of trimers of the empirical formula C.sub.6 Br.sub.3 Cl.sub.2 F.sub.9, of which the isomer ##STR2## is a significant part and reacting the trimer mixture with zinc in the presence of acetic anhydride to form a perhalododecane. The product is especially useful as a gyroscopic flotation fluid because of its stability, homogeneity and density.