BUTYLATED AND OCTYLATED DIALKYLDIPHENYLAMINE

摘要

An antioxidant product used in organic materials subject to degradation wherein the antioxidant product comprises a mixture of para-ortho-alkylated diphenylamines of particular butylated and octylated dialkyldiphenylamines. The antioxidant product can be made utilizing a process wherein an ortho-alkylated diphenylamine is para-alkylated by a reaction with an olefin in the presence of a catalyst regenerated from the ortho-alkylation, wherein the para-alkylation reaction is carried out at a temperature between about 180.degree.C and 220.degree.C.