NOVEL PERFLUOROALKYL HYDROPHOBIC AND OIL-REPELLENT SURFACTANTS DERIVED FROM SUBSTITUTED AMIDES, PREPARATION AND USE THEREOF

摘要

The invention concerns the preparation of novel perfluoroalkyl surfactants of cationic type (amine oxide), anionic (carboxylate salts), amphoteric, carboxybetain and sulphobetain, non-ionic (polyoxyethylated and/or propylated amine ether) derived from substituted amides not having any sulphonyl group (SO2) directly bound to the perfluorinated chain and having -NHCO- and -CONH- sequences. The compounds of the invention are used as hydrophobic and oil-repellent agents or as additives in fire-extinguishing foams to improve their fireproof property.