METHOD OF SYNTHESIS OF ETHYLENE GLYCOL POLYFLUOROALKYL ESTERS

摘要

use: as solvents technical liquids. essence: cid - u0432u0435u0440u0448u0435u043du0441u0442u0432u043eu0432u0430u043du043du044bu0439 way u043fu043eu043bu0443u0447u0435u043du0438u00a0 u043fu043eu043bu0438u0444u0442u043eu0440u0430u043bu043au0438u043bu043eu0432u044bu0445 ethers u044du0442u0438u043bu0435u043du0433u043bu0438u043au043eu043bu00a0 formula (RFHCCFaOCHfc or ci. exit 60 to 88%. agent 1: ethylene glycol. agent 2: u0442u0435u0442u0440u0430u0444u0442u043eu0440 - or u0442u0440u0438u0444u0442u043eu0440u0445u043bu043eu0440u044du0442u0438u043bu0435u043d.u0443u0441u043bu043eu0432u0438u00a0 reaction, the temperature of 40 to 60 & deg; c, the solvent is u0434u0438u0433u043bu0438u043c, u0434u0438u043cu0435u0442u043eu043au0441u0438u044du0442u0430u043d or dioxane, the presence of u043au0430u043bu0438u00a0 hydroxide or u043du0430u0442u0440u0438u00a0 and quaternary ammonium salt of consistent formula (r) r, r2. x where r1 u0430u043bu043au0438u043b c2 - c4, the ra CHaPh or Ri ra, the lead in u043cu043eu043bu044cu043du043eu043c ratio of ethylene glycol, alkali metal hydroxide, u0430u043cu043cu043eu043du043du0438u0439 - u043du0430u00a0: dissolve salt tel equal 1: 0.15 to 0.4: 0.01 - 0.05: 1.0 to 6.0. 1, table 2).