Process for the purification of 1,1-difluoroethane

Details Process for the purification of 1,1-difluoroethane Process for the purification of 1,1-difluoroethane

1997-10-29

1999-02-23

Siegel, Alan

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

Organic compounds

Halogen containing

570180, C07C 1738

Patent

active

058746579

ABSTRACT:
The present invention relates to processes for separating 1,1-difluoroethane (HFC-152a) from vinyl chloride by using extractive distillation with an extractive agent selected from the aliphatic hydrocarbons, chlorocarbons and alcohols.

REFERENCES:
patent: 5001287 (1991-03-01), Fernandez et al.
patent: 5095158 (1992-03-01), Bolmer
patent: 5200431 (1993-04-01), Dattani et al.
patent: 5306850 (1994-04-01), Darago

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