| abstract |
Amphoteric branched sulfatobetaines of the formula <IMAGE> wherein Rf is perfluoroalkyl or perfluoroxyperfluoroalkyl; R1 is a direct bond or a divalent connecting group; R2, R3, and R4 are independently hydrogen or lower alkyl; R5, R6 and R7 are independently lower alkyl, and R6 may additionally represent aralkyl, and R6 and R7 taken together with the nitrogen to which they are attached may also represent piperidino or morpholino and R5, R6 and R7 taken together may also represent pyridyl, acridyl or quinolyl and salts thereof, their preparation and use as surfactants are disclosed. |