PRODUCTION OF 4,4'-(1-PHENYLETHYLIDENE)BISPHENOL

摘要

PROBLEM TO BE SOLVED: To provide a method for production by which 4,4'-(1-phenylethylidene) bisphenol can be produced from acetophenone and phenol in a short reactional time. SOLUTION: Sulfuric acid and/or a sulfonic acid and further a sulfur- containing organic compound having mercapto group are used as a catalyst in a method for producing 4,4'-(1-phenylethylidene)bisphenol by reacting acetophenone with phenol.