Polyamide powder with long-lasting, consistently good flowability

US7211615B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Franz-Erich Baumann · Schneverdingen, DE
• Sylvia Monsheimer · Haltern am See, DE
• Maik Grebe · Bochum, DE
• Wolfgang Christoph · Marl, DE
• Dirk Heinrich · Herten, DE
• Holger Renners · Velen, DE
• Heinz Scholten
• Thomas Schiffer · Haltern, DE
• Joachim Muegge · Haltern am See, DE
• Johannes Chiovaro · Marl, DE

Key dates

• Filing date: Nov 5, 2003
• Grant date: May 1, 2007
• Expiry date: Dec 12, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L77/06
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A composition containing from 88 to 99.99% by weight of a polyamide, a compound of a polyamide and mixtures of these, and from 0.01 to 0.25% by weight of a flow aid where the drying loss from the flow aid after 5 days of conditioning at a relative humidity of 95% is less than or equal to 1%, determined by ISO 787/2.