| abstract |
A process for the preparation of 1-chloro-2,2-difluoroethane ("142") wherein 1,2-dichloroethenen("1130") is fluorinated in the gas phase in the presence of a catalyst whichnis a supported or unsupported fluorinated salt of one or more of chromium, iron,nniobium, nickel, antimony, tin, tantalum or titanium. 142 is a known foam blowingnagent. |