Process for producing moldings with an increase in the melt stiffness

US8647551B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Andreas Dowe · Borken, DE
• Rainer Goering · Borken, DE
• Martin Himmelmann · Haltern, DE
• Sonja Bollmann · Haltern am See, DE
• Franz-Erich Baumann · Schneverdingen, DE
• Roland Wursche · Schneverdingen, DE

Key dates

• Filing date: Feb 15, 2006
• Grant date: Feb 11, 2014
• Expiry date: May 3, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/139
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for producing moldings with condensing-up of a polyamide molding composition whose polyamide component contains, as a result of the method of preparation, at least 5 ppm of phosphorus in the form of an acidic compound by means of a compound having at least two carbonate units, wherein