Process for removal of impurities from phenol by means of at least one acid catalyst

US6489519B1 · kind B1 · utility

Assignee

• Phenolchemie GmbH & Co. KG · DE

Inventors

• Heinrich van Barneveld · Bottrop, DE
• Otto Gerlich · Gladbeck, DE
• Wilfried Jordan
• Otto Schnurr · Stabroek, BE
• Hugo H. J. M. Liefooche · Neunkirchen, DE

Key dates

• Filing date: Oct 26, 2000
• Grant date: Dec 3, 2002
• Expiry date: Oct 26, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Impurities are removed from phenol by a process, comprising:first treating phenols containing impurities with at least one acid catalyst which converts the impurities into compounds which can be separated from phenol;separating the acid treated phenol from the compounds; andtreating the distilled phenol a second time with at least one acid catalyst; thereby effectively removing the impurities from phenol.