Alkylation process

US4560809A · kind A · utility

Assignee

• Ethyl Corporation · US

Inventors

• Dixie E. Goins · Baton Rouge, US
• Harold V. Huggins · Orangeburg, US
• Edward A. Burt · Baton Rouge, US
• Silas W. Holmes · Columbia, US

Key dates

• Filing date: Oct 9, 1984
• Grant date: Dec 24, 1985
• Expiry date: Oct 9, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C37/50
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the production of a 2,6-dialkylphenol in high yield wherein the alkyl groups are secondary or tertiary with a reduced overall production of 4-alkylphenol by-products by the aluminum phenoxide catalyzed pressure reaction of isobutylene with phenol and a mixture of 2,4-dialkylphenol and 2,4,6-trialkylphenol which may be obtained, in a cyclic process, as a bottom stream from the distillation of the reaction mixture to obtain the 2,6-dialkylphenol product.