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Title:
METHOD FOR RECOVERING ORGANIC SOLVENT FROM WASHING LIQUID
Document Type and Number:
Japanese Patent JP2002105009
Kind Code:
A
Abstract:

To provide a method for recovering an organic solvent from a washing liquid, by which problems on the operation due to clogging on the discharge of a liquid and due to the incapability in the boiling of a distiller can be prevented in a process for distilling and recovering the organic solvent from the washing liquid obtained by washing potassium chloride by-produced in a process for producing 2,2,2-trifluoroethanol and its ester with a water- containing organic solvent.

This method for distilling and recovering the organic solvent, comprising washing the by-produced potassium chloride with an organic solvent and then distilling and recovering the organic solvent from the washing liquid in a process for reacting 1,1,1-trifluoro-2-chloroethane with an organic carboxylic acid potassium salt in the presence of an aprotic polar solvent to produce the 2,2,2-trifluoroethanol and/or the organic acid 2,2,2-trifluoroethyl ester, characterized by allowing the presence of a surfactant in the distiller liquid.


Inventors:
NUKUI KAZUNORI
ABE HIROYUKI
ARAI SHOJI
Application Number:
JP2000289989A
Publication Date:
April 10, 2002
Filing Date:
September 25, 2000
Export Citation:
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Assignee:
F TECH INC
International Classes:
C07C27/00; C07C29/124; C07C31/38; C07C67/11; C07C69/675; (IPC1-7): C07C27/00; C07C29/124; C07C31/38; C07C67/11; C07C69/675
Domestic Patent References:
JPS5913742A1984-01-24
JP2000506842A2000-06-06
JP2001130987A2001-05-15
JP2000210679A2000-08-02
JPH08208557A1996-08-13
JPH01113338A1989-05-02
Foreign References:
US4600795A1986-07-15
Attorney, Agent or Firm:
Masayuki Kishida (2 outside)