Abstract: A process for preparing the novel compound 2-bromo, 1', 2'-dichloroperfluoro diethyl ether of formula:BrCFhd 2--CF.sub.2 --O--CFCl--CF.sub.2 Clwhere BrCF.sub.2 --CF.sub.2 OF is reacted with the olefin CFCl.dbd.CFCl, with bromohypofluorite being introduced into the reaction mixture in the form of a solution in an inert solvent based on chlorofluorohydrocarbon.

Abstract: 1,1,1.Trifluoro-2-fluoroethane (HFC 134A), respectively 1,1,1-trifluoro-2, 2-dichloroethane (HCFC 123) 1,1,1-trifluoro-2-chloro, 2-fluoroethane (HCFC 124) and pentafluoroethane (HFC 125), are purified from impurities respectively consisting of 1,1-difluoro-2-chloroethylene (HCFC 1122) and of difluorodichloroethylene (CFC 1112A and CFC 1112), by reacting in the liquid state respectively HFC 134A or HCFC 123, HCFC 124 and HFC 125 containing the relative impurities, with elemental fluorine, at temperatures ranging from -80.degree. to -40.degree. C.

Abstract: A process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination,in the gas phase, of perchloroethylene in the presence of a catalyst comprising chrome oxides supported on AlF.sub.3 in the gamma and/or beta form.

Abstract: Process for the preparation of halogenated polyethers of the general formula: ##STR1## wherein X=Cl or F, R.sub.F and R'.sub.F either equal to or different from each other, are selected from fluorinated alkyl radicals with from 1 to 20 carbon atoms, cycloalkyl, heterocyclic, alkylcycloalkyl or cycloalkylalkyl radicals, having from 5 to 20 carbon atoms, said radicals possibly containing also other halogen atoms different from fluorine and possibly ethereal oxygen atoms, by reaction with a fluoroxy or chloroxy compound of the formula: R'.sub.F OX with a fluorovinylether of the general formula: R.sub.F O--CF.dbd.CF.sub.2.

Abstract: A process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination, in the gas phase, of perchloroethylene in the presence of a catalyst comprising chrome oxides supported on AlF.sub.3 in the gamma and/or beta form.

Abstract: A process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination, in the gas phase, of perchloroethylene in the presence of a catalyst comprising chrome oxides supported on AlF.sub.3 in the gamma and/or beta form.

Abstract: Process for the preparation of 1,2-difluoro-ethylene and 1-chloro-1,2-difluoroethylene by catalytic hydrogenation of 1,2-dichloro-difluoro-ethylene.

Abstract: A process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination, in the gas phase, of perchloroethylene in the presence of a catalyst comprising chrome oxides supported on AlF.sub.3 in the gamma and/or beta form.

Abstract: A process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination, in the gas phase, of perchloroethylene in the presence of a catalyst comprising chrome oxides supported on AlF.sub.3 in the gamma and/or beta form.

Abstract: Process for the production of alkyl trifluoroacetates by esterification of trifluoroacetyl chloride with alkyl alcohols, wherein the trifluoroacetyl chloride/alcohol molecular ratio is greater than 1; alkyl trifluoroacetate is recovered by condensation at temperatures lower than -30.degree. C.

Abstract: Improved process for the preparation of fluorohalogenated ethers by reaction of a fluorinated fluorooxycompound with a halogenated olefin, performed in liquid phase, in the presence of an inert solvent, at low temperature, the fluoroxycompound being continuously fed in form of solution in an inert solvent.

Abstract: Preparation of fluoroxy-halo-compounds by direct reaction between fluorine and organic compounds having a molecular structure in which at least one oxygen atom is directly bound to a carbon atom in the carbonylic form, in the presence of a fluorination catalyst, in gaseous phase, at an absolute pressure of between 50 and 800 kPa and at a temperature between -5.degree. and +100.degree. C., under conditions of a continuous feeding of the reactants and a continuous removal of the reaction product.

Abstract: The new compound bromofluoroethylhypofluorite, having the formula CF.sub.2 BrCF.sub.2 OF is obtained by starting from ##STR1## by the reaction in gaseous phase with fluorine, in the presence of a catalyst constituted by CsF on a support constituted by copper (or by another metal) in the form of a porous material having a surface area of at least 0.1 m.sup.2 /g.

Abstract: Process for the preparation of chloro-oxy-halo-compounds by means of the direct reaction between FCl and organic compounds having a molecular structure wherein an oxygen atom is directly linked to a carbon atom in the carbonyl form, in the presence of a catalyst constituted by an alkali metal or alkali-earth metal fluoride, preferably selected from K, Rb, Cs, Ba, Sr, the reaction being carried out in the gas phase and in continuous.

Abstract: Mono- and bis-hypofluorites respectively of formula: FO.sub.2 S--R.sub.f --CF.sub.2 OF and FOCF.sub.2 --R'.sub.f --CF.sub.2 OF wherein R.sub.f is perfluoroalkylene or perfluorochloroalkylene and R'.sub.f is a perfluoroalkylene or perfluorooxyalkylene, and process for preparing them, which is conducted continuously, at a temperature from 0.degree. to 60.degree. C. and comprises starting from the respective acyl fluorides ##STR1## by reaction of fluorine in the gas phase in the presence of a catalyst consisting of K, Rb, Cs or Ba fluoride, preferably supported on a metal material.

Abstract: Process for the preparation of 2-perfluoropropoxy-perfluoropropionyl fluoride by dimerization of hexafluoropropene epoxide in aprotic polar medium, in the presence of N,N,N',N'-tetrasubstituted diaminodifluoromethane as catalyst, characterized in that the dimerization reaction is carried out in the presence of a co-catalyst constituted by a nitrogenous organic base having structure of aniline, or of pyridine, or of a derivative thereof, wherein the nitrogen atom is not linked to hydrogen atoms and, in the case of the pyridine-type structure, it is sterically hindered by substituent groups on ortho-position relatively to it.