BISPHENOL SYNTHESIS CATALYST Russian patent published in 2009 - IPC B01J31/10 B01J37/10 C07C39/16 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a bisphenol synthesis catalyst. The method of producing a bisphenol synthesis catalyst, which contains an acidic cation-exchange resin on which a sulphur-containing amine compound is adsorbed, involves bringing the acidic cation-exchange resin into contact with acidic waste water, which contains a sulphur-containing amine compound, released from the catalyst synthesis stage. The waste water has initial concentration of the said sulphur-containing amine compound equal to or less than 170 parts per million (wt) and contact with the said circulating resin is done until the said concentration falls to 5 parts per million (wt) or less.

EFFECT: considerable removal of sulphur-containing amine compound from waste water after catalyst synthesis.

3 cl