Process for producing moldings

US7906063B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Sylvia Monsheimer · Haltern am See, DE
• Franz-Erich Baumann · Schneverdingen, DE
• Maik Grebe · Bochum, DE
• Eva Von Der Bey · Mainz, DE

Key dates

• Filing date: Dec 15, 2004
• Grant date: Mar 15, 2011
• Expiry date: Dec 10, 2027

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C64/165
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention is directed to a process of producing moldings by a layer-by-layer process including selectively melting regions of a respective pulverulent layer via unfocused introduction of electromagnetic energy, using a polymer powder, wherein the powder includes at least one thermoplastic random copolymer with an ISO 1133 MFR value of from 12 to 1 gm/10 min.