Societe Atochem

Atochem

Produits Chimiques Ugine Kuhlmann

Charles Laviron

Andre Lantz

Henri Mathais

Bernard Dubreux

Pierre Durual

Jean Blaise

Marc Hermant

Francis Leroux

Michel Jaccaud

Dominique Ravier

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.

Catalysts for liquid phase fluorination

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.

Fluorated ionic polymer, method for its preparation and membranes

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.

Process for preparation of .alpha.-acetoxy-.alpha.-methyl-N,N'-diacetyl

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:

Polyfluorinated amino alcohols and their esters, preparation of these

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Lyons, France

Charles Laviron