| abstract |
A process is disclosed for making CF 3 CF 2 CH 3 , CF 3 CF═CH 2 and/or CF 3 CCl═CH 2 . The process involves reacting at least one starting material selected from the group consisting of halopropanes of the formula CX 3 CH 2 CH 2 X, halopropenes of the formula CX 3 CH═CH 2 and halopropenes of the formula CX 2 ═CHCH 2 X, wherein each X is independently F or Cl, with HF and Cl 2 in a reaction zone to produce a product mixture comprising HF, HCl, CF 3 CF 2 CH 3 , CF 3 CF═CH 2 , and CF 3 CCl═CH 2 ; and recovering the CF 3 CF 2 CH 3 , CF 3 CF═CH 2 and/or CF 3 CCl═CH 2 from the product mixture. Also disclosed is a process for making CF 3 CH 2 CHF 2 , CF 3 CH═CHF, and/or CF 3 CH═CHCl. This process involves reacting at least one starting material selected from the group consisting of halopropenes of the formula CX 3 CH═CH 2 and halopropenes of the formula CX 2 ═CHCH 2 X, wherein each X is independently F or Cl, with HF and Cl 2 in a reaction zone to produce a product mixture comprising HF, HCl, CF 3 CH 2 CHF 2 , CF 3 CH═CHF and CF 3 CH═CHCl; and recovering the CF 3 CH 2 CHF 2 , CF 3 CH═CHF, and/or CF 3 CH═CHCl from the product mixture. The molar ratio of HF to the total amount of starting materials fed to the reaction zone for both of these processes is at least stoichiometric, and the molar ratio of Cl 2 to total amount of starting material fed to the reaction zone for both of these processes is 2:1 or less. |