Continuous preparation of polymers and apparatus for this purpose

US5753784A · kind A · utility

Assignee

• BASF SE

Inventors

• Wolfgang Fischer · Meerbusch, DE
• Michael Baumgartel · Bischofswerda, DE

Key dates

• Filing date: Jul 1, 1996
• Grant date: May 19, 1998
• Expiry date: Jul 1, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/00168
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In a process for the continuous preparation of polymers from reaction components, in particular of copolymers of styrene and acrylonitrile, by mass or solution polymerization, the reaction components are passed through a circulation reactor which has at least one tube reactor in which is arranged at least one static mixing element through which a liquid heat-transfer medium flows. The static mixing element has multiply curved pipelines.