Production processes

Abstract

The present invention involves processes that utilize an olefinic compound, in particular, hexafluoropropene (HFP) or chlorotrifluoroethene (CFC-1113) as extracting agents in the purification of pentafluoroethane (HFC-125). These processes can utilize recovered HFP as a precursor for the production of heptafluoropropane (HFC-227) or other derivatives.

1 - 30 . (canceled)  
   
   
       31 . A production process comprising: 
 providing a first mixture comprising a first compound and a second compound, the first mixture having a first ratio of the first compound to the second compound;    exposing the mixture to a C-3 olefin to form a second mixture, the second mixture comprising the C-3 olefin and the first mixture; and    removing a third mixture from the second mixture, the third mixture having a second ratio of the first compound to the second compound, the second ratio being different than the first ratio.    
   
   
       32 . The production process of  claim 31  wherein the C-3 olefin is hexafluoropropene.  
   
   
       33 . The production process of  claim 31  wherein both the first and second compounds are C-2 compounds.  
   
   
       34 . The production process of  claim 33  wherein both the first and second compounds comprise at least one halogen.  
   
   
       35 . The production process of  claim 34  wherein one or both of the first and second compounds comprise one or both of F and Cl.  
   
   
       36 . The production process of  claim 35  wherein the first compound comprises Cl and the second compound comprises F.  
   
   
       37 . The production process of  claim 36  wherein the first compound is C 2 F 5 Cl and the second compound is C 2 F 5 H.  
   
   
       38 . The production process of  claim 37  wherein the C-3 olefin comprises a halogen.  
   
   
       39 . The production process of  claim 38  wherein the C-3 olefin comprises F.  
   
   
       40 . The production process of  claim 39  wherein the C-3 olefin is C 3 F 6 .  
   
   
       41 . The production process of  claim 31  wherein: 
 the first compound comprises Cl;    the second compound comprises F; and    the C-3 olefin comprises F.    
   
   
       42 . The production process of  claim 41  wherein both the first and second compounds are C-2 compounds.  
   
   
       43 . The production process of  claim 31  wherein the C-3 olefin comprises F.  
   
   
       44 . The production process of  claim 43  wherein the C-3 olefin is C 3 F 6 .  
   
   
       45 . The production process of  claim 31  wherein: 
 the first compound comprises Cl;    the second compound comprises F; and    the first ratio is greater than the second ratio.    
   
   
       46 . A production process comprising exposing a reaction mixture to an extracting agent to separate a product compound of the reaction mixture from at least one reactant compound of the reaction mixture, wherein the extracting agent comprises a C-3 olefin.  
   
   
       47 . The production process of  claim 46  wherein the product compound is a halogen exchange reaction product of the one reactant compound.  
   
   
       48 . The production process of  claim 47  wherein: 
 the product compound comprises F; and    the one reactant compound comprises Cl.    
   
   
       49 . The production process of  claim 48  wherein: 
 the product compound is C 2 F 5 H; and    the one reactant compound is C 2 F 5 Cl.    
   
   
       50 . The production process of  claim 49  wherein the C-3 olefin comprises F.  
   
   
       51 . The production process of  claim 46  wherein the C-3 olefin is C 3 F 6 .