Abstract: Compounds having a polyhydroxylated hydrophilic moiety, a highly fluorinated moiety and a functional junction group linking said moieties together, wherein said hydrophilic moiety is derived from a polyol or an aminopolyol, and wherein said highly fluorinated moiety consists of a fluorocarbon group wherein at lest 50% of the atoms bonded to the carbon skeleton are fluorine atoms, the other atoms bonded to the carbon skeleton being hydrogen, chlorine or bromine atoms, said highly fluorinated moiety containing at least 4 fluorine atoms; as well as the internal ethers and ketals thereof; process for their preparation; and a compositions containing said compounds as surfactants, together with non polar compounds, for use as gas carriers.

Abstract: This invention concerns new branched perfluoroalkylated ethenes, their preparation and their use, in the form of aqueous emulsions, as oxygen carriers, and in particular as blood substitutes or as perfusion agents for the preservation of organs before transplant.

Abstract: A polyfluorinated butadiene having the formula ##EQU1## wherein n and m are integers from 1 to 10 and n=m or n.noteq.m, is prepared by reductive coupling, exemplarily with copper, of the corresponding 1,2-bis(perfluoroalkyl)iodoethylene having the formula CF.sub.3 (CF.sub.2).sub.n CH = CI--(CF.sub.2).sub.m CF.sub.3. This iodoethylene is conveniently prepared by a simple addition reaction between a perfluoroalkyl iodide and a perfluoroalkyl acetylene. The perfluoralkylated butadienes are useful as transporters of dissolved gas, particularly of oxygen as in blood substitutes.