Process for producing 3,3',5,5'-tetra-t-butylbiphenol

摘要

A process for producing 3,3',5,5'-tetra-t-butylbiphenol, which process comprises the oxidative dimerization of 2,6-di-t-butylphenol in the presence of a catalyst, wherein the catalyst is a catalyst mixture comprising an alkali metal catalyst and an alkylphenol or an alkali metal catalyst, an alkylphenol and phenol.