| 摘要 |
<p>Perfluoroalkyl-(C4-C10) sulphonyl fluorides are reacted with (C2H5)3N and stoichiometric excess of an ethoxysilane in an inert solvent at 10-60 degrees C for prepn. of tetraethylammonium perfluoroalkylsulphonates of formula (C2H5)4N encircled + RF SO3 encircled - (I) (where RF is perfluorinated 4-10C alkyl). The octyl deriv. of (I) is used in hard chromium plating metal surfacing, as a mould-releasing agent in thermoplastic injection moulding, as a wetting agent in the acid polishing of glass and in photographic emulsion applications. The deriv. is used in polarography as a conductivity salt. Yields of 92% are obtd.</p> |
