FIELD: chemistry.
SUBSTANCE: process comprises reacting phenol or its derivatives with a ketone or aldehyde at a temperature of 30-80°C in presence of a catalyst and hydrogen sulfide promoter. The cation-exchange resin is used as the catalyst, and hydrogen sulfide is fed at a pressure of 0.1-1.0 MPa, at a molar ratio of ketone or aldehyde: phenol or its derivatives: hydrogen sulphide 1: (2-10):(0.12-0.7).
EFFECT: method allows to produce high-quality bisphenols with main substance content of not less than 99,9 percent in high yield.
3 cl, 1 tbl, 2 ex
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