| abstract |
A composition comprising a fluorinated pyridinium cationic compound of formula (I) n nwhereinn Rf is R 1 (CH 2 CH 2 ) n —, R 1 is a C 7 to C 20 perfluoroalkyl group interrupted by at least one catenary oxygen atom, each oxygen bonded to two carbon atoms, n is an integer of 1 to 3, and R is H, C 1 to C 5 linear or branched alkyl, or C 1 to C 5 linear or branched alkoxy, having surfactant properties for lowering surface tension in an aqueous medium or solvent medium, and for use as a foaming agent. |