Modular device for the continuous degassing and production of polymer precondensate with high reaction product surface to volume ratio with gentle treatment of the reaction product mass

US8124018B2 · kind B2 · utility

Assignee

• EPC Industrial Engineering GmbH · DE

Inventors

• Michael Streng · Maintal, DE
• Clifford Schaeferskuepper · Saalfeld, DE
• Stephan R. Biller · Birmingham, US
• Andreas Hilpert · Gelnhausen, DE

Key dates

• Filing date: Mar 22, 2006
• Grant date: Feb 28, 2012
• Expiry date: Jun 19, 2028

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/2462
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A modular device for the continuous degas sing of reaction products, such as of a carboxylic acid or a polycarboxylic acid with a multi-functional alcohol suitable for application in the production of precondensates (or also prepolymers), has a heated enclosure in which a plurality of modules are stacked one above the other, each said module having a base. There is a vapor inlet to the uppermost module and a discharge port at the lower most module with at least one module intermediate the uppermost and lowest modules to provide space for expansion of the vapor. The base of each module preferably is concave and there are conduits that provide flow communication between the modules.