Continuous polymerization of vinyl monomers

US5576386A · kind A · utility

Assignee

• BASF SE

Inventors

• Fritz E. Kempter · Mannheim, DE
• Manfred Niessner · Schifferstadt, DE
• Ralph Diener · Monsheim, DE
• Heino Thiele · Ludwigshafen, DE
• Wolfram Weiss · Mutterstadt, DE
• Hans Renz · Meckenheim, DE

Key dates

• Filing date: Jan 28, 1993
• Grant date: Nov 19, 1996
• Expiry date: Jan 28, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J19/1887
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for the continuous polymerization of vinyl monomers to form vinyl polymers having a molecular weight M.sub.n of from 1000 to 20,000 comprises PA0 a. carrying out the polymerization within an annular gap from 0.5 to 10 mm in width, PA0 b. confining the annular gap on the inner surface with a rotor, and PA0 c. carrying out the polymerization at from 110.degree. to 270.degree. C.