SURFACE ACTIVE SUBSTANCES CONTAINING AN OLIGO(HEXAFLUOROPROPENE OXIDE) CHAIN AS A HYDROPHOBIC AND OLEOPHOBIC MOIETY

Article abstract of DOI:10.1016/S0022-1139(00)80953-7

Oil soluble surface active substances, (HFPO)_n-Ar, where Ar is an aryl group and (HFPO)_n is an oligo(hexafluoropropene oxide) group, n = 2 - 5, were prepared and tested for their surface activities in toluene or m-xylene.Addition of a small amount of (HFPO)_4-6-Ar (0.2 - 0.5 wtpercent) was found to decrease remarkably the surface tension of these solvents (down to 12 - 14 dyn<*>cm^-1 at 20 deg C).Water soluble surfactans (HFPO)_n-Ar'SO3Na, where Ar' is an arylene group, were also prepared by sulfonation of (HFPO)_n-Ar.Some of these subtances (n = 4 - 6) decreased the surface tension of water down to 16 dyn<*>cm^-1 at 20 deg C in the concentration of 10^-4 - 10^-5 mole<*>l^-1.