Abstract: The fluorine content of an acyclic saturated compound of the formula C.sub.n F.sub.a X.sub.b having at least one carbon with at least two fluorine substituents (wherein each X is independently selected from Cl and Br, and wherein n is 1 to 4, a is 2 to 10, b is 0 to 8, and a+b equals 2n+2) is reduced by reacting the acyclic saturated compound with HCl in the vapor phase at an elevated temperature in the presence of a catalyst, the mole ratio of HCl to the acyclic saturated compound being at least about 2:1.

Abstract: According to the process according to the invention, substantially fluorinated alkyl bromides, preferably perfluoroalkyl bromides, are prepared by reaction of substantially fluorinated alkyl iodides with organic bromine compounds in which the bromine atom is bound covalently to a carbon atom or a nitrogen atom.

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 process for the preparation of partly fluorinated ethanes of the general formulaCF.sub.3 --CFH.sub.x Cl.sub.2-xin which x=0, 1 or 2, is indicated which comprises reacting, as the reactant, partly fluorinated ethane of the general formulaC.sub.2 F.sub.3 H.sub.x Cl.sub.3-xin which x=0, 1, or 2, and, as the fluorinating agent, partly fluorinated ethanes of the general formulaCF.sub.3-x Cl.sub.x --CH.sub.3-y Cl.sub.yin which x=0, 1 or 2 and y=0, 1, 2 or 3 with one another in gaseous form in the presence of a chromium catalyst at temperatures of 150.degree. to 600.degree. C., the reactant and the fluorinating agent having the same chemical structural formula being excluded.

Abstract: Trifluoromethane or monochlorodifluoromethane and carbon tetrachloride are converted to trichloromonofluoromethane, dichlorodifluoromethane and chloroform using a catalyst of activated aluminum and magnesium oxides.

Abstract: Gas phase and liquid phase processes are disclosed which use interconversion of CF.sub.3 CHFCl and CF.sub.2 HCF.sub.2 Cl in contact with catalyst consisting essentially of halided aluminum oxide and/or aluminum halide at elevated temperatures to increase the mole ratio of one of said compounds in a composition relative to the other. Also disclosed in use of said interconversion along with hydrogenolysis in processes for producing mixtures of CF.sub.3 CH.sub.2 F and CF.sub.2 HCF.sub.2 H from certain compositions comprising CF.sub.2 HCF.sub.2 Cl such that the mole ratio of CF.sub.3 CH.sub.2 F to CF.sub.2 HCF.sub.2 H in the product mixtures produced from said compositions may be increased or decreased.

Abstract: A process for isomerizing a chlorofluorocarbon of the formula:CClFYCClFXwherein X and Y are independently selected from chlorine and fluorine provided that X is not --Cl when Y is --Fto the compound of the formula:CCl.sub.2 YCF.sub.2 XThe process comprises contacting the chlorofluorocarbon with an activated aluminum trihalide catalyst. The catalyst is prepared by contacting the chlorofluorocarbon with anhydrous aluminum trichloride in the presence of a metal. The metal is selected from the group consisting of stainless steel, chromium, manganese, molybdenum, tungsten and combinations thereof.

Abstract: Improved process for the preparation of 1,1,1,2-tetrafluoroethane by the steps of chlorofluorination of selected organic compounds using Cl.sub.2 and HF followed by hydrogenolysis of the resulting products, the improvement residing in the use of excess HF and recycle of the unreacted compounds and byproducts to the chlorofluorination step.

Abstract: A vapor phase process is disclosed for the selective disproportionation of fluorodichloromethane to difluorochloromethane and chloroform using a solid catalyst of an activated mixture of iron oxide and rare earth oxides.

Abstract: Catalytic transhalogenation of haloaromatics according to the equation:C.sub.z F.sub.a X.sub.b N.sub.e L.sub.1 +C.sub.z F.sub.c X.sub.d N.sub.e L.sub.2 .fwdarw.C.sub.z F.sub.a+1 X.sub.b-1 N.sub.e L.sub.1 +C.sub.z F.sub.c-1 X.sub.d+1 N.sub.e L.sub.2wherein:when C.sub.z is a benzene derivative, a+b=5; e=0; c+d=5; z=6;when C.sub.z is a pyridine derivative, a+b=4; e=1; c+d=4; z=5;when C.sub.z is a naphthalene derivative, a+b=7; e=0; c+d=7; z=10; andwhen C.sub.z is a biphenyl derivative, a+b=9; e=0; c+d=9; z=12;L.sub.1 and L.sub.2, alike or different, are selected from F, Cl, Br, H, CN, C.sub.n F.sub.2n+1, and C.sub.6 F.sub.5 ;X is Cl, Br, or I when C.sub.z is a benzene derivative; andn is 1 to 12. This method is a novel route to known haloaromatic compounds.

Abstract: Organosilicon compounds referred to as silacrown ethers or "silacrowns" are of the general formula: ##STR1## where R.sup.1 and R.sup.2 are organic radicals or hydrogen and n is an integer between 4 and 10 inclusive. Silacrown ethers are prepared by reacting polyethylene glycol with substituted silanes under conditions promoting cyclization over polymerization. Silacrown ethers may be employed as phase-transfer catalysts in solution or immobilized on siliceous supports.

Abstract: A vapor phase process for selective conversion of fluorodichloromethane and carbon tetrachloride to fluorotrichloromethane, difluorodichloromethane, difluorochloromethane and chloroform by contacting a solid catalyst of an activated mixture of iron oxide and rare earth oxides.

Abstract: This invention relates to a continuous gaseous-phase process for the preparation of trichlorotrifluoroethane, dichlorotetrafluoroethane and monochloropentafluoroethane, in predetermined proportions, from tetrachloroethylene, chlorine and hydrofluoric acid in the presence of a catalyst. The process is characterized by the combination of two chlorination-fluorination reactors in sequence, a parallel fluorination-dismutation reactor, and a separation unit for extracting the desired products and recycling recovered hydrofluoric acid and non-fluorinated or insufficiently fluorinated products. The process advantageously yields dichlorotetrafluoroethane containing less than 7% asymmetric isomer, and trichlorotrifluoroethane containing less than 2% asymmetric isomer.

Abstract: A method of manufacturing CF.sub.4 and/or C.sub.2 F.sub.6 characterized by employing a mixed gas of tetrafluoroethylene and carbon dioxide at a mol ratio of less than 4:1 and heating it to a temperature exceeding 900.degree. C.