Decoloration of bisphenol-A recycle stream with cation exchange resin
 All or part of bisphenol-A process mother liquor recycle stream is contacted with acidic cation exchange resin to remove color bodies. The acidic cation exchange resin is periodically washed and reactivated after use by a mixed phenol/water wash. 
Union Carbide Corporation
C
C07C
inventional
Frederick Miller Stephen Howard
Konrad Mason