Crompton Gmbh

Chemtura Corporation

Ronald Abbott

Robert G Rowland

Joseph F Stieber

Mitchel Cohn

Huiyuan Chen

Alan B True

Clifford M Pratt

Aromatic amines, for example, diarylamines such as diphenylamine, dinaphthylamine, N-phenyl-N-naphthyl amine etc., are alkylated by passing a mixture of the amine and an olefin, though a clay catalyst in a fixed bed reactor system. The process is conveniently run as a continued process, produces an alkylated aromatic amine in excellent purity and provides efficiencies in material and energy use.

Fixed bed process for clay catalyzed alkylation of aromatic amines

An alkylated 1,3-benzenediamine compound used as a deposit-control lubricant additives for organic materials including lubricating oil, gasoline, and diesel fuels. The invention improves the oxidative stability of the lubricants and fuels by adding the alkylated 1,3-benzenediamine compound. The alkylated 1,3-benzenediamine compound is formed using a catalytic hydrogenation that alkylates the 4 and/or 6 position of the central aromatic ring.

Alkylated 1,3-benzenediamine compounds and methods for producing same

Reaction products of mercaptobenzothiazoles, mercaptothiazolines, and mercaptobenzimidalzoles with epoxides as lubricant additives

Reaction products of mercaptobenzothiazoles, mercaptothiazolines, and mercaptobenzimidazoles with epoxides as lubricant additives

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New Hartford, CT, United States of America

Ronald Abbott