METHOD FOR PRODUCING KETAL BISPHENOLS

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a ketal bisphenol, which has a high reaction rate, a high conversion rate and an improved production efficiency. SOLUTION: The method for producing a ketal bisphenol comprises reacting at least a dihydroxybenzophenone and a glycol or an alkylene dithiol. The reaction is carried out in the presence of 0.1-50 mol% of an organic sulfonic acid or an organic carboxylic acid based on the dihydroxybenzophenone. COPYRIGHT: (C)2008,JPO&INPIT