Abstract: The catalysts according to the invention are mixtures of an antimony trihalide and of a titanium tetrahalide.These catalysts can be used for the liquid phase fluorination of halogenated aliphatic hydrocarbons, especially that of chlorinated ethane and ethylene derivatives.

Abstract: The invention pertains to a perfluorated ionic polymer. This polymer is prepared starting with polymers presenting carboxylic groupings, these groupings being transformed in reactive entities which are later eliminated.These membranes are particularly suitable for electrolysis of alkalin halogens.

Abstract: Process for the preparation of .alpha.-acetoxy-.alpha.-methyl-N,N'-diacetylmalonamide wherein hydrocyanic acid or a cyanide is reacted in a first step with acetic anhydride and then in a second step the reaction mixture so obtained is treated with acetic acid in the presence of an acid catalyst, wherein the first step is carried out in the presence of a catalyst based on anion exchange resins in which the functional groups are quaternary ammonium or tertiary amine, such .alpha.-acetoxy-.alpha.-methyl-N,N'-diacetylmalonamides being very useful as activators in bleaching and cleaning compositions which are thus active at lower temperatures.

Abstract: The invention relates to new polyfluorinated compounds which are usable as anti-wear additives for lubricants.These compounds are of general formula: ##STR1## in which R.sub.F is a perfluoroalkyl radical, R.sub.1 and R.sub.3 each denote a hydrogen atom or an alkyl, cycloalkyl or aryl radical, R.sub.2 and R.sub.4 each denote a hydrogen atom or an acyl residue, m equals 0 or 1 and X denotes a hydrogen atom or a 2-hydroxy-1-phenylethyl group. They are prepared by hydrogenation of amino alcohols of formula:R.sub.F --CF.dbd.CH--CH.sub.2 --NH--CH.sub.2 CH(R.sub.1)--OHfollowed, where appropriate, by a reaction with an epoxide and/or an esterification.

Abstract: A process for the purification of by-product sulfuric acid resulting from the synthesis of boron trifluoride, wherein the ratio of fluorine to boron is three or more, which process comprises entraining the by-product acid in an inert gas, the process being characterized in that before entrainment the anhydrous sulfuric acid is diluted with water in a proportion of from about one to about ten percent by weight of water with respect to the acid to be treated, the temperature being maintained above 90.degree. C., the sulfuric acid obtained containing less than 0.003% fluorine and less than 0.005% boron, so that the quality is substantially equivalent to a sulfuric acid directly obtained by the oxidation of sulfur.