Abstract: The present invention relates to fluoroalkyloxy alkanes having formula (I): RF—R1—O—R2 wherein: RF is a linear or branched perfluoroalkyl group, having from 1 to 12, preferably from 2 to 8, carbon atoms; R1 is a linear or branched, non-fluorinated alkylene group, having from 1 to 6, preferably from 2 to 4, carbon atoms, —R2 is a linear or branched, non-fluorinated alkyl group, having from 1 to 12, preferably from 2 to 8, carbon atoms, possibly containing at least one ether bond —O— along the chain. The present invention further relates to a process for preparation and use thereof, possibly in mixture with at least one silicone oil, as medicaments in ophthalmology, in particular as tamponade liquids in an operation for the treatment of retinal detachment.

Abstract: Per(poly)fluorinated polyoxyethylated carbamates of general formula (I) in which R.sub.F represents a perfluorinated group containing between 1 and 18 carbon atoms, W represents an oxo group or nothing, n is an integer from 1 to 10, m is from values 2 to 6, 80 or not defined, R is an alkyl group, R.sub.F W(CH.sub.2).sub.n+1 NHC(O)-- in which R.sub.F and W are as defined above, --(CHCH.sub.3 CH.sub.2 O).sub.30 (CH.sub.2 CH.sub.2).sub.80 C(O)NH(CH.sub.2).sub.n+1 R.sub.F in which R.sub.F is a perfluorinated group containing from 1 to 18 carbon atoms, R' is a hydrogen atom, an alkyl group containing between 1 and 18 carbon atoms which is optionally substituted, an optionally substituted aryl or aralkyl group, an allyl, methallyl or propargyl group or a perfluorinated chain having between 1 and 18 carbon atoms.

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: 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.