IMPROVED PROCESS FOR THE MANUFACTURE OF POLYPHENOLS
An improved process for the manufacture of a polyphenol compound such as bisphenol-A by introducing into a reaction zone a phenolic compound reactant, a carbonyl compound reactant, and a catalyst promoter comprising bismethylthiopropane added to the reaction system in certain specific locations, and reacting the ingredients within the reaction zone in the presence of an acid catalyst.
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Page/Page column 20-21
(2008/06/13)
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