Method for the continuous production of an aliphatic or semi-aromatic polyamide oligomer

US9708449B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Gad Kory · Gaiberg, DE
• Joachim Clauss · Scheinfeld, DE
• Axel Wilms · Bad Dürkheim, DE
• Stefan Schwiegk · Hamburg, DE
• Christian Schmidt · Bonn, DE
• Silke Biedasek · Ludwigshafen, DE
• Heinrich Sack · Haßloch, DE
• Florian Richter · Mannheim, DE
• Ning Zhu · 安丰镇, CN

Key dates

• Filing date: Jun 11, 2014
• Grant date: Jul 18, 2017
• Expiry date: Jun 11, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/265
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing an aliphatic or semiaromatic polyamide oligomer, in which an aqueous composition of the monomers is subjected to an oligomerization at elevated temperature and elevated pressure and the oligomerization output is preferably subjected to an expansion.