METHOD FOR PRODUCING A BISPHENOL

In an embodiment, a method of producing a bisphenol comprises reacting a phenolic compound with a reactant comprising one or both of an aldehyde and a ketone in the presence of a catalyst system and methanol to produce the bisphenol; wherein the methanol is present in an amount of 250 to 5,000 ppm based on the total weight of the reactant; wherein the catalyst system comprises an ion-exchange resin comprising a plurality of sulfonic acid sites; and 5 to 35 mol% of an attached promoter molecule based on the total moles of the sulfonic acid sites in the catalyst system; and wherein the attached promoter molecule comprises at least two thiol groups per attached promoter molecule. 本发明涉及种用于生产双酚的方法。在个实施方式中，生产双酚的方法包括在催化剂体系和甲醇的存在下使酚类化合物与包含醛和酮中的种或两者的反应物反应以生产双酚；其中基于反应物的总重量，甲醇以250至5,000ppm的量存在；其中催化剂体系包括含有多个磺酸位点的离子交换树脂；以及基于催化剂体系中的磺酸位点的总摩尔数，5至35mol％的附着助催化剂分子；并且其中附着助催化剂分子包含至少两个硫醇基团/附着助催化剂分子。