PROCESS FOR PREPARING 1,1,1-TRIFLUORO-2,2-DICHLOROETHANE
1,1,1-Trifluoro-2,2-dichloroethane is prepared by reacting, in the gas phase, 1,1,1-trifluoro-2-chloroethane with chlorine. The formation of the by-product 1,1,1-trifluorotrichloroethane is prevented by effecting the reaction with a chlorine/organic compound molar ratio of not higher than 1 at a tem...
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Zusammenfassung: | 1,1,1-Trifluoro-2,2-dichloroethane is prepared by reacting, in the gas phase, 1,1,1-trifluoro-2-chloroethane with chlorine. The formation of the by-product 1,1,1-trifluorotrichloroethane is prevented by effecting the reaction with a chlorine/organic compound molar ratio of not higher than 1 at a temperature of from 350 DEG C to 450 DEG C and with residence times of the reagents in the reactor of from 5 to 25 seconds. |
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