Process for stripping monomers and other volatile constituents from polymer melts

US7060788B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Uwe Hucks · Alpen, DE
• Thomas König · Nuremberg, DE
• Melanie Mothrath · Mülheim an der Ruhr, DE

Key dates

• Filing date: Dec 2, 2004
• Grant date: Jun 13, 2006
• Expiry date: Dec 2, 2024

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01F27/1155
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for stripping volatile constituents from polymer melts is disclosed. The process entails introducing the polymer melt into a horizontally oriented cylindrical device that contains a plurality of perforated disks rotating about a common horizontally oriented, externally driven shaft bringing the melt and disks into contact in a manner calculated to constantly renew the surface of the melt to be stripped. Also disclosed is an apparatus suitable for the process.