Method for producing fluoroalkyl ether

Details Method for producing fluoroalkyl ether Method for producing fluoroalkyl ether

2007-03-20

2007-03-20

Keys, Rosalynd (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S684000, C568S697000

Reexamination Certificate

active

11293200

ABSTRACT:
A method for producing a fluoroalkyl ether, which comprises reacting a fluoroalkyl alcohol with a fluorinated olefin in the presence of a solvent and a catalyst, wherein the fluoroalkyl alcohol and the fluorinated olefin are continuously supplied into a reactor, a reaction product containing the fluoroalkyl ether is continuously withdrawn from the reactor, and the reaction is carried out while the concentration of the fluoroalkyl alcohol present in the reactor is maintained to be at most 7 mass % based on the total organic component present in the reactor. According to the present invention, a fluoroalkyl ether having a high purity can be produced in an industrial scale and at a high reaction rate.

REFERENCES:
patent: 2973389 (1961-02-01), Weissermel et al.
patent: 3557294 (1971-01-01), Dear et al.
patent: 3764706 (1973-10-01), Terrell
patent: 9-263559 (1997-10-01), None
patent: 2002-201152 (2002-07-01), None
Machine translation of JP 09-263559 A.
R. E. A. Dear, et al., “Polyhaloethers from the Reaction of Fluoroalcohols and Haloolefins”, Journal of Chemical Engineering Data, vol. 14, No. 4, XP-002396631, Oct. 1969, pp. 493-497.
Junji Murata, et al., “Selective synthesis of fluorinated ethers by addition reaction of alcohols to fluorinated olefins in water”, Green Chemistry, vol. 4, No. 1, XP-008067976, 2002, pp. 60-63.
Albert L. Henne, et al., “Fluorinated Ethers”, Journal of the American Chemical Society, vol. 72, XP-002396632, 1950, pp. 4378-4380.

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