| 摘要 |
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 |
