Method for producing bis(4-hydroxyaryl)alkanes

US6288284A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Rob Eek · Bergen op Zoom, NL
• Kaspar Hallenberger · Leverkusen, DE
• Christine Mendoza-Frohn · Erkrath, DE
• Georg Ronge · Mülheim an der Ruhr, DE
• Gerhard Fennhoff · Willich, DE
• Domien Sluyts · Stabroek, BE
• Werner Verhoeven · Kalmthout, BE

Key dates

• Filing date: Jul 3, 2000
• Grant date: Sep 11, 2001
• Expiry date: Jul 3, 2020

Classification

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

Abstract

The present invention relates to a process for the production of bis(4-hydroxyaryl)alkanes by an acid-catalyzed reaction between aromatic hydroxy compounds and ketones, in which the temperature, ketone content and water content of a liquid reaction mixture are adjusted by means of a suitably composed gas phase.