Daikin Industries, Ltd.

Toshiyuki Katsube

Fumihiko Yamaguchi

Jun Miki

Yuuki Matsuda

Shoji Takaki

Toru Yoshizawa

Kouzou Noda

Eiji Ogura

A process for preparing a fluorine-containing alcohol compound, the process comprising the step of reacting water with a halogenated fluorine compound in the presence of a catalyst for preparing a fluorine-containing alcohol compound, the catalyst obtained by supporting an ammine complex containing at least one component selected from the group consisting of the elements in Group 1B, Group 2B, Group 6A, Group 7A and Group 8 of the periodic table on at least one complex oxide selected from the group consisting of Si&#x2014;Al complex oxides, Al&#x2014;P complex oxides and Si&#x2014;Al&#x2014;P complex oxides.

Catalyst for preparing fluorine-containing alcohol compound and a process for preparation of fluorine-containing alcohol compound

The present invention provides a process for producing a fluoroalkyl iodide represented by the general formula (II):Rf-CHCHI&#x2003;&#x2003;(II)wherein Rf is a perfluoroalkyl or polyfluoroalkyl group comprising 1 to 20 carbons, the process comprising reacting hydrogen iodide gas with a fluoroalkene in the presence of a catalyst. The present invention also provides a process for producing a fluoroester by reacting the fluoroalkyl iodide with a carboxylate.

Process for producing fluoroalkyl iodide

A catalyst for preparing a fluorine-containing alcohol compounds, the catalyst is obtained by supporting an ammine complex containing at least one component selected from the group consisting of the elements in Group 1B, Group 2B, Group 6A, Group 7A and Group 8 of the periodic table on at least one complex oxide selected from the group consisting of Si&#x2014;Al complex oxide, Al&#x2014;P complex oxides and Si&#x2014;Al&#x2014;P complex oxides.

In a method for recovering a fluoroalcohol from a mixture comprising a fluoroalcohol and water, (i) a method for recovering a fluoroalcohol by distilling the mixture comprising the fluoroalcohol and water to separate water as an azeotropic or azeotrope-like composition; and (ii) a method for recovering a fluoroalcohol, wherein water is separated by pervaporation.

Method for recovering fluoroalcohol

In a method for recovering a fluorine-containing solvent from the mixture comprising the fluorine-containing solvent and dyes, (i) a method for recovering a fluorine-containing solvent by distillation; and (ii) a method for recovering a fluorine-containing solvent comprising the steps of adding to the mixture the second solvent which uniformly mixes with the fluorine-containing solvent but does not dissolve the dyes; separating a precipitate from the resulting mixture; and separating the second solvent.

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Settsu, Japan

Toshiyuki Katsube