A perfluoroalkanesulfonamidohydrocarbon amine of the formula wherein R is saturated perfluoroalkyl of 1 to 18 carbon atoms, R is saturated alkyl of 1 to about 6 carbon atoms, 5 R is bridging alkylene of 2 to 13 carbon atoms and Q is a member of the group of divalent groups SO and CO. 2.