FLUORINATED ALCOHOL PRODUCTION PROCESS Russian patent published in 2005 - IPC

Abstract RU 2264378 C2

FIELD: industrial organic synthesis.

SUBSTANCE: invention relates to improved process of high-purity solvent-grade fluorinated alcohol production, which comprises reaction of methanol with tetrafluoroethylene or hexafluoropropylene in presence of alkylperoxide. Process leads to formation of fluorinated alcohol having general formula: H(CFR¹CF₂)_nCH₂OH (I), wherein n=1 or 2; when n=1, R¹ represents F or CF₃ and, when n=2, R¹ represents F. After completion of reaction, reaction mixture is distilled on distillation column in presence of water and HF to produce (i) top fraction containing alcohol formed from alkyl peroxide, water, and HF and (ii) bottom liquid containing fluorinated alcohol of formula (I). Bottom liquid is purified to recover desired fluorinated alcohol.

EFFECT: increased yield of product.

7 cl, 3 dwg, 2 ex

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RU 2 264 378 C2

Authors

Okamoto Khidekazu

Dates

2005-11-20—Published

2001-08-24—Filed