Process for the preparation of strongly basic anion exchangers using ethylene oxide

US6716889B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Holger Lutjens · Cologne, DE
• Axel Ingendoh · Velbert, DE
• Karl-Rudolf Gassen · Odenthal, DE
• Peter Wenzl · Cologne, DE
• Klaus Rall · Recklinghausen, DE

Key dates

• Filing date: Apr 2, 1998
• Grant date: Apr 6, 2004
• Expiry date: Apr 2, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J41/14
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Reacting weakly basic anion exchangers bearing tertiary amino groups with ethylene oxide under pH control and addition of acid leads to superior strongly basic anion exchangers.