| abstract |
(57) [Problem] To provide a method for producing bisphenol A whose hue is stable and does not color at high temperatures. A method for producing bisphenol A by reacting phenol and acetone with an acid-type ion exchange resin as a catalyst, an alkylmercaptan as a co-catalyst, Reaction temperature 60-100 ° C, phenol / acetone (molar ratio) 6-13, acetone / mercaptan (molar ratio) 13 The reaction was carried out under the conditions of 25 to 25, and the concentration of the organic sulfur compound excluding the alkyl mercaptan at the outlet of the reactor was measured, and the concentration was maintained at 3,000 wt ppm or less based on the produced bisphenol A to produce bisphenol A. Is the way. |