Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1997-06-23
1998-06-09
Geist, Gary
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
568698, C07C 1700, C07C 4100
Patent
active
057637121
ABSTRACT:
This invention relates to a process for the preparation and fractionation of a mixture of dimethyl ether and chloromethane by extractive distillation with methanol as extractant. The mixture is prepared by reacting methanol with hydrogen chloride. The mixture is then distilled to remove water and is subsequently subjected to an extractive distillation with methanol as extractant, with chloromethane resulting as top product. In another distillation step, the remaining dimethyl ether is separated from the methanol.
REFERENCES:
patent: 3983180 (1976-09-01), Habata et al.
Leistner Erhard
Roth Peter
Wendel Wolfgang
Geist Gary
Hoechst Aktiengesellschaft
Parson Jafar
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