Use of a single-stage or multistage stirrer to prepare polymers

US6252018A · kind A · utility

Assignee

• BASF SE

Inventors

• Robert Rupaner · Ludwigshafen, DE
• Sven Lawrenz · Mannheim, DE
• Gerhard Bauer · Düsseldorf, DE
• Johannes Dobbelaar · Monsheim, DE
• Jurgen Nahstoll · Eisenberg, DE
• Franz-Josef Mueseler · Neustadt, DE
• Axel Ferber · Worms, DE
• Jürgen Hartmann · Wesel, DE
• Peter Keller · Bruchmühlbach-Miesau, DE
• Martin Meister · Bocholt, DE
• Josef Neutzner · Neustadt, DE
• Gerd Rehmer · Beindersheim, DE

Key dates

• Filing date: Mar 16, 1998
• Grant date: Jun 26, 2001
• Expiry date: Mar 16, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/185
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

At least one single-stage or multistage stirrer which produces not only a tangential flow component but also an axial flow field is used in a stirred-vessel reactor in connection with the preparation of polymers by liquid phase polymerization.