METHOD OF PREPARATION OF N-(1-PHENYLETHYL)-N'-PHENYL-1,4-PHENYLENEDIAMINE AND USE THEREOF

摘要

N-(1-phenylethyl)-N'-phenyl-1,4-phenylenediamine of high purity is produced by a two-step synthesis, where in the first step 4-aminodiphenylamine reacts with acetophenone in the presence of an acidic catalyst. The reaction is performed to an incomplete conversion of 4-aminodiphenylamine, whereby an intermediate product of high purity is obtained, which is hydrogenated on a heterogeneous catalyst in the second step. N-(1-phenylethyl)-N'-phenyl-1,4-phenylenediamine can be used as a component of anti-degradation systems.