Ausimont

Ausimont S.r.l.

Claudio Gervasutti

Giorgio Guglielmo

Gian Paolo Gambaretto

Lino Conte

Luigi Marangoni

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

Process for the preparation of 1,2-difluoro-ethylene and

A perfluorosuccinylfluoride is prepared by the reaction of a gaseous mixture of 1,4-dibromoperfluorobutane with SO.sub.3 in oleum with at least 65% of free SO.sub.3 containing a catalyst comprising, besides mono- and bi-valent mercury sulphates, B.sub.2 O.sub.3 in quantities of from 0.3% to 8% by weight with respect to the free SO.sub.3 present in the 'oleum' during course of the reaction.

Process for the preparation of perfluorosuccinylfluoride

A process for preparing 1,2-difluoroethane or 1,1,2-trifluoroethane by hydrogenation of 1,2-dichlorodifluoroethylene or 1-chlorotrifluoroethylene in the presence of a hydrogenation catalyst. The process is conducted in the gas phase at a temperature ranging from 100.degree. C. to 220.degree. C., the molar ratios between H.sub.2 and olefin being higher than 3.

Process for preparing 1,2-difluoroethane and 1,1,2-trifluoroethane

Preparing perfluoro-(2-bromoethyl-vinyl-ether)

Process for preparing perfluoro-(2-bromoethyl-vinyl-ether)

A process for preparing fluoroethylenes and chlorofluoroethylenes starting from chlorofluoroethanes and hydrogen, carried out in gas phase at a temperature ranging from 150.degree. to 600.degree. C., in the presence of a hydrogenation catalyst, wherein the chlorofluoroethanes have at least one chlorine atom on each carbon atom, and the catalyst is selected preferably from palladium, nickel, chromium, cobalt, platinum, copper and mixtures thereof, and it is utilized either as such or inert materials.

Process for preparing fluoroethylenes and chlorofluoro-ethylenes from

Process for the preparation of hydro(halo)fluoroalkanes by direct fluorination in liquid phase with elemental fluorine at low temperature (under 0.degree. C.) of the corresponding hydro(halo)=alkenes.

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Claudio Gervasutti