Preparation of 2,6-dialkyl-naphthalenes

US4795847A · kind A · utility

Assignee

• Rutgerswerke Aktiengesellschaft · DE

Inventors

• Jens Weitkamp · Horb am Neckar, DE
• Marita Neuber · Dreieich, DE
• Wilhelm Holtmann · Munster, DE
• Gerd Collin · Duisburg, DE
• Hans Spengler · Halle, BE

Key dates

• Filing date: Feb 2, 1988
• Grant date: Jan 3, 1989
• Expiry date: Feb 2, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2529/40
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of 2,6-dialkyl-naphthalenes comprising selectively alkylating naphthalene or 2-alkyl-naphthalene with alkylating agent in the presence of a zeolite catalyst at 250.degree. to 345.degree. C. which dialkyl-naphthalenes are useful for the preparation of naphthalene 2,6-dicarboxylic acid used to produce high-quality polyesters or polyamides.