Fixed bed process for clay catalyzed alkylation of aromatic amines

US9617201B2 · kind B2 · utility

Assignee

• CHEMTURA CORPORATION · US

Inventors

• Mitchel Cohn · West Lafayette, US
• Ronald G. Abbott · Kingwood, US
• Alan B. True · New Haven, US
• Huiyuan Chen · Cheshire, US

Key dates

• Filing date: Oct 8, 2014
• Grant date: Apr 11, 2017
• Expiry date: Oct 22, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

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.