METHOD FOR PREPARING FLUOROALKANOL Russian patent published in 2005 - IPC

FIELD: chemical technology.

SUBSTANCE: invention relates to the improved and selective method for preparing fluoroalkanol of high purity degree. Method for preparing fluoroalkanol of the formula (1): H-(R^fCFCF₂)_n-CR¹R²-OH (1) involves carrying out the reaction between polyfluoroolefin of the formula (2): R^fCF=CF₂ (2) and alkanol of the formula (3): CHR¹R²-OH (3) in the presence of a radical initiating agent wherein polyfluoroolefin of the formula (2), alkanol of the formula (3) and a radical initiating agent are fed into reactor continuously wherein they react at temperature 105-135°C and synthesized fluoroalkanol of the formula (1) is removed. Symbols in formulae (1), (2) and (3) have the following values: R^f means fluorine atom or (C₁-C₄)-polyfluoroalkyl group; each R¹ and R² means independently hydrogen atom or (C₁-C₃)-alkyl group; n is a whole number in the range from 1 to 4. Synthesized fluoroalkanol is used in preparing, for example, water-repellent or hydrophilyzing additives, surface-active substance or color developer.

EFFECT: improved preparing method.

7 cl, 1 dwg, 5 ex