Abstract: A method of forming a lubricating film on a surface, comprising applying to a surface a multiphasic composition comprising at least one (per)fluoropolyether (PFPE) lubricant, water and from 0.1 to 3% by weight of water of at least one thickening agent, said multiphasic composition having a viscosity, when measured at 21° C. at a shear rate of 1 sec?1 of at least 10 Pa×sec so as to form a layer, and drying said layer to form a lubricating film. The Applicant has found that by the use of the multiphasic composition as above detailed it is advantageously possible to convey to surface to be lubricated the PFPE lubricant by using application techniques (doctor blade, metering rod, . . . ) as those suitable for solid-like greases, while the actual conveyed lubricant behaves in lubrication as an oil, avoiding the use of fluorinated solvents.

Abstract: A method of forming a lubricating film on a surface, comprising applying to a surface a multiphasic composition comprising at least one (per)fluoropolyether (PFPE) lubricant, water and from 0.1 to 3% by weight of water of at least one thickening agent, said multiphasic composition having a viscosity, when measured at 21° C. at a shear rate of 1 sec?1 of at least 10 Pa×sec so as to form a layer, and drying said layer to form a lubricating film. The Applicant has found that by the use of the multiphasic composition as above detailed it is advantageously possible to convey to surface to be lubricated the PFPE lubricant by using application techniques (doctor blade, metering rod, . . . ) as those suitable for solid-like greases, while the actual conveyed lubricant behaves in lubrication as an oil, avoiding the use of fluorinated solvents.

Abstract: Stable diphase emulsions consisting of:a) perfluoropolyethers having perfluoroalkyl and groups;b) a conventional surfactant, dispersed inc) a continuous dispersing phase consisting of glycerol or of a polyhydroxylated compound containing at least three hydroxyl groups, selected from polyalcohols and saccharides, dissolved in a hydrophile solvent and/or water.

Abstract: The invention relates to stable emulsions of perfluoropolyethers having perfluoroalkyl end groups and of fat substances, consisting of:one or more perfluoropolyethers having perfluoroalkyl end groups: 1-50% by weight,one or more polyhydroxylated compounds selected from glycerol and polyalcohols other than glycerol and saccharides, containing at least three hydroxylic groups, said compounds being dissolved in water or in a hydrophilic solvent when they are solid: 10-95% by weight, including water and the hydrophilic solvent, if any,one or more fat substances having a melting temperature not higher than 100.degree. C.: 10-80% by weight,one or more emulsifiers: 0.1-10% by weight.These emulsions are utilized, in particular, in cosmetology and dermatology.

Abstract: Stable diphase emulsions consisting of:a) perfluoropolyethers having perfluoroalkyl end groups;b) a conventional surfactant, dispersed inc) a continuous dispersing phase consisting of glycerol or of a polyhydroxylated compound containing at least three hydroxyl groups, selected from polyalcohols and saccharides, dissolved in a hydrophile solvent and/or water.

Abstract: Stable diphase emulsions consisting of:a) perfluoropolyethers having perfluoroalkyl end groups;b) a conventional surfactant,dispersed inc) a continuous dispersing phase consisting of glycerol or of a polyhydroxylated compound containing at least three hydroxyl groups, selected from polyalcohols and saccharides, dissolved in a hydrophile solvent and/or water.

Abstract: Compositions for cosmetics and dermatology comprising a perfluoropolyether liquid dispersed in an oil/water or water/oil emulsion, or in a solid phase suited to form a gel, suspended in an organic liquid phase.