Emulsions of perfluorocarbons in aqueous media
AssigneeI.S.C. Chemicals Limited
InventorsStanley S. Davis, David E. M. Wotton
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Abstract
Increased stability is conferred on oil-in-water emulsions of perfluorocarbons by addition of a minor (0.1-5% w/v) amount of a fluorinated compound of higher boiling point than the perfluorocarbon being emulsified. The added fluorinated compound is preferably a perfluorinated saturated polycyclic hydrocarbon. The most preferred additive is perfluoroperhydrofluoranthene.
Claims6
An oil-in-water emulsion of perfluorodecalin in an aqueous medium, wherein the emulsion is stabilized by the addition of a fluorinated compound of a higher boiling point than perfluorodecalin, wherein the fluorinated compound of higher boiling point is selected from the group consisting of:
- perfluoroperhydrofluorene C.sub.13 F.sub.22 ;
- perfluoroperhydrophenanthrene C.sub.14 F.sub.24 ;
- and
- perfluoroperhydrofluoranthene C.sub.16 F.sub.26 ;
- and wherein said fluorinated compound of high boiling point is added in an amount of from 0.1% to 5% weight/volume of the emulsion.
An oil-in-water emulsion of perfluorodecalin in an aqueous medium, wherein the emulsion is stabilized by the addition of perfluoroperhydrofluoranthene, C.sub.16 F.sub.26, added in an amount of from 0.1% to 5% weight volume of the emulsion.
A method of stabilizing an oil-in-water emulsion of perfluorodecalin in an aqueous medium, comprising adding to said emulsion a fluorinated compound of a higher boiling point than the perfluorodecalin, wherein the fluorinated compound of higher boiling point is selected from the group consisting of:
- perfluoroperhydrofluorene C.sub.13 F.sub.22 ;
- perfluoroperhydrophenanthrene C.sub.14 F.sub.24 ;
- and
- perfluoroperhydrofluoranthene C.sub.16 F.sub.26 ;
- and wherein said fluorinated compound of high boiling point is added in an amount of from 0.1% to 5% weight/volume of the emulsion.
A method of stabilizing an oil-in-water emulsion of perfluorodecalin in an aqueous medium, comprising adding to said emulsion perfluoroperhydrofluoranthene C.sub.16 F.sub.26, in an amount of from 0.1% to 5% weight/volume of the emulsion. 0
Dependencies are inferred from the claim text.