METHOD OF SYNTHESIS OF POLYFLUORINATED ALCOHOLS Russian patent published in 2000 - IPC

FIELD: chemical technology. SUBSTANCE: invention relates to method of synthesis of polyfluorinated alcohols of the formula: R-OH where R is HCF₂CF₂CH₂-, CF₃CFHCF₂CH₂- by heating peroxide initiator solution (concentration is 3.5-15.4 wt.%) in aliphatic alcohol under pressure 3.4-6.5 kg/cm² to fixing temperature 110-120 C followed by controlled feeding fluoro-containing olefin to excess of this alcohol and increase of pressure to 9-15 kg/cm² and temperature to 150 C. Process is carried out expediently at mole ratio fluoroolefin : initiator = (7.2-28.2):1 and heating is carried out in the presence of polyfluorinated alcohol taken in the amount 0.2-1.2% of loaded alcohol mass. EFFECT: increased yield of end product. 3 cl, 2 tbl, 9 ex