Patent ID: 7728183

Claim:
A process for reducing the mole ratio of a (1) first component selected from the group consisting of compounds of the formula Y 1 Y 2 C═CF 2 wherein Y 1 and Y 2 are each independently H, F, Cl, Br, C 1 -C 6 alkyl or C 1 -C 6 haloalkyl containing no more than 3 chlorine substituents, 2 bromine substituents and 1 iodo substituent to a (2) second component selected from the group consisting of saturated compounds of the formula C d H e F f Cl g Br h I k wherein d is an integer from 1 to 10, and e+f+g+h+k is equal to 2d+2, provided that g is 0, 1, 2 or 3, h is 0, 1 or 2 and k is 0 or 1 and unsaturated compounds of the formula Y 3 Y 4 C═CY 5 Y 6 , wherein Y 3 , Y 5 and Y 6 are each independently H, F, Cl, Br, C 1 -C 6 alkyl or C 1 -C 6 haloalkyl containing no more than 3 chlorine substituents, 2 bromine substituents and 1 iodo substituent, provided that Y 5 and Y 6 are not both F, and Y 4 is C 1 -C 6 alkyl or C 1 -C 6 haloalkyl containing no more than 3 chlorine substituents, 2 bromine substituents and 1 iodo substituent, in a mixture comprising said first component and second component, comprising: contacting said mixture with at least one selective removal agent selected from the group consisting of SO 3 and RSO 3 H, wherein R is selected from the group consisting of F, Cl, OH, C 1 -C 8 alkyl, C 1 -C 8 fluoroalkyl, and C 1 -C 8 fluoroalkoxyalkyl containing no more than two ether oxygens to selectively react said selective removal agent with said first component.