Fluorinated sulfonic acids and derivatives thereof

Abstract

The invention is directed to fluorinated alkylamido sulfonic acids and salts of the formula ##STR1## where R.sub.f is straigt or branched chain perfluoroalkyl of 1 to 18 carbon atoms or perfluoroalkyl substituted by perfluoroalkoxy of 2 to 6 carbon atoms, R.sub.1 is hydrogen or lower alkyl and each of R.sub.2, R.sub.4 and R.sub.5 is individually hydrogen or a hydrocarbon radical, and R.sub.6 is alkylene, alkylenethioalkylene, alkyleneoxyalkylene or alkyleneiminoalkylene with a secondary or tertiary nitrogen atom. R.sub.3 is hydrogen, alkyl, aryl or pyridyl, M is hydrogen, a monovalent alkali metal, an alkaline earth metal, an organic base or ammonium, and n is an integer corresponding to the valency of M. Said compounds are prepared by a base catalyzed addition reaction of the thiol, R.sub.f -R.sub.6 SH, to an alkyenylamido sulfonic acid salt. The compounds are useful as surfactants and as levelling agents in floor polish formulations.

Dependencies are inferred from the claim text.