Production of difluoromethane

Details Production of difluoromethane Production of difluoromethane

1994-06-29

1995-10-31

Geist, Gary L.

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

Organic compounds

Oxygen containing

570142, C07C 4100

Patent

active

054631394

ABSTRACT:
A composition comprising bis(fluoromethyl)ether and less than an equimolar amount of water, a process for the production of the composition comprising contacting formaldehyde with hydrogen fluoride and separating at least some of the by-product water from bis(fluoromethyl)ether, and use of the composition for the production of difluoromethane.

REFERENCES:
patent: 3377394 (1968-04-01), Boudakian et al.
Weinmayr, Viktor, "Hydrogen Fluoride as a Condensing Agent . . . ", Journal of Organic Chemistry, vol. 28, Feb., 1963, pp. 492-494.
Lawrence Summers, "Action of Hydrogen Halide on an Aldehyde . . . ", The .alpha.-Haloalkyl Ethers, Dec. 1954, pp. 314-315 and 337-338.
Sokol'Skii, G. A., "Fluoromethyl Esters of Sulfuric Acid . . . ", Translated from Zhurnal Obshchei Khimii, vol. 32, No. 4, pp. 1310-1314, Apr., 1962.
Darragh et al., Journal of Inorganic Nucl. Chemistry, 1970, vol. 32, pp. 1745-1747.
Hasek et al., J.A.C.S., vol. 83, pp. 543-551 (1913).

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