Processes for the synthesis of 1,2,3,4-tetrachloro-hexafluoro-butane
The present invention relates to processes for the manufacture of 1,2,3,4-tetrachloro-hexafluoro-butane in a microreactor.
1. A process for the production of 1,2,3,4-tetrachloro-hexafluoro-butane, said process comprising one of the following reactions:
[a] fluorination of 1,2,3,4-tetrachlorobutane, or
[b] fluorination of 1,2,3,4-tetrachloro-1,4-difluoro-1,3-butadiene, or
[c] fluorodimerization of 1,2-dichlorodifluoroethylene,
wherein said process comprising performing the reaction in a microreactor.
2. The process according to claim 1 , wherein said process is carried out in gas phase, in liquid phase or in liquid/gas phase.
3. The process according to claim 2 , wherein said gas phase or said liquid/gas phase comprises at least one gas selected from the group consisting of fluorine, nitrogen, helium, argon, CO 2 , CF 4 , C 2 F 6 , and C 3 F 8 .
4. The process according to claim 3 , wherein said liquid phase or said liquid/gas phase comprises at least one solvent selected from the group consisting of chlorofluorocarbons; perhaloalkanes; perhaloolefins; perfluoropolyethers; perfluoroethers; and perfluorotrialkyl amines.
5. The process according to claim 1 , wherein reaction [a] is performed by keeping the microreactor at a temperature of from 80° C. to 300° C.
6. The process according to claim 1 , wherein reaction [b] is performed by keeping the microreactor at a temperature of from −10° C. to +50° C.
7. The process according to claim 1 , wherein reaction [c] is performed by keeping the microreactor at a temperature of from −150° C. to 0° C.