FLUORINE-CONTAINING β-KETOSULFONIC ACIDS OR SALTS THEREOF AS SURFACTANTS FOR PROCESSES IN AQUEOUS MEDIA, AND METHOD FOR THEIR PREPARATION Russian patent published in 1994 - IPC

FIELD: surface-active agent for processes in aqueous media. SUBSTANCE: provided is fluorine-containing b-ketosulfonic acid derivatives of the following formula R_FCOCH₂SO₂OZ, wherein R_F is group C_nF_2n+1, n is 5-8; or C₆H₁₁ or CF₃O(CF₂CF₂O)_mCF₂, where m is 1-3; or C₃H₇O(CF(CF₃)CF₂O)_xCF(CF₃), wherein X is 0-2, Z is H, or their salts of ammonium, alkaline or alkaline earth metal, primary, secondary or ternary amines. Reagent 1: fluoralkylketone of the formula -R_FCOCH. Reaction conditions: in equimolar ratio and at temperatures of 20-50 C. EFFECT: increased efficiency.