The Lubrizol Corporation

Ping Y Zhu

James D Burrington

Thomas F Steckel

Douglas C Rhubright

Molybdated dispersants from heteropoly acids

Aliphatic hydrocarbyl-substituted aromatic amines are prepared by reacting an aromatic amine and an aliphatic hydrocarbylating agent, such as an olefin, in the presence of a heteropolyacid catalyst such as Cs.sub.2.5 H.sub.0.5 PW.sub.12 O.sub.40, for a period of time and at a temperature sufficient to permit reaction.

Alkylation of aromatic amines using a heterpoly catalyst

An improved method for making alkylated aromatic amines is disclosed. The method includes a new alkylating catalyst system comprising an aromatic amine alkylating catalyst and a non-catalyst solid such as silica. The method results in faster reaction rates and higher yields of alkylated aromatic amines.

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Willoughby Hills, OH, United States of America

Ping Y Zhu