Process for the preparation of difluoromethane

Details Process for the preparation of difluoromethane Process for the preparation of difluoromethane

1997-09-03

1998-10-06

Siegel, Alan

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

Organic compounds

Halogen containing

570167, 570168, C07C 1708

Patent

active

058178945

ABSTRACT:
Difluoromethane is produced from dichloromethane and hydrogen fluoride by continuous reaction in a liquid medium comprising an inorganic fraction and an organic fraction, in which a content by weight of the said organic fraction in the liquid medium is maintained at less than or equal to 25% of the sum of the inorganic and organic fractions and a content by weight of dichloromethane in the liquid medium is maintained at less than or equal to 10% of the sum of the inorganic and organic fractions.

REFERENCES:
patent: 2005711 (1935-06-01), Daudt et al.
patent: 2749374 (1956-06-01), Ruh et al.
patent: 2749375 (1956-06-01), Ruh et al.
patent: 5495057 (1996-02-01), Nam et al.
patent: 5672786 (1997-09-01), Bonniface et al.

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