Powder with improved recycling properties, process for its production, and use of the powder in a process for producing three-dimensional objects

US8173258B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Sylvia Monsheimer · Haltern am See, DE
• Ulrich Simon · Kahla, DE
• Maik Grebe · Bochum, DE
• Franz-Erich Baumann · Schneverdingen, DE
• Wolfgang Christoph · Marl, DE
• Stefan Altkemper · Dorsten, DE

Key dates

• Filing date: Oct 3, 2005
• Grant date: May 8, 2012
• Expiry date: Nov 5, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2991
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A powder which is capable of being used in a layer-by-layer process in which regions of the respective pulverulent layer are selectively melted and, after cooling, are fixed, contains a mixture of diacid-regulated polyamide and diamine-regulated polyamide and/or diacid-regulated copolyamide and diamine-regulated copolyamide.