Continuous method for multi-staged drying and subsequent condensation of a polyamide granulate

US8703879B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Wolfgang Loth · Bad Dürkheim, DE
• Faissal-Ali El-Toufaili · Ludwigshafen, DE
• Achim Stammer · Freinsheim, DE
• Gad Kory · Gaiberg, DE
• Achim Gerstlauer · Schifferstadt, DE
• Jens Becker · Ludwigshafen am Rhein, DE

Key dates

• Filing date: Jun 19, 2009
• Grant date: Apr 22, 2014
• Expiry date: Oct 30, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/16
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A continuous process for the multistage drying and postcondensation of polyamide pellets in the solid phase comprises