Laser-sintering powder containing titanium dioxide particles, process for its preparation, and moldings produced therefrom

US7148286B2 · 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
• Thomas Schiffer · Haltern, DE
• Heinz Scholten

Key dates

• Filing date: Oct 16, 2003
• Grant date: Dec 12, 2006
• Expiry date: Dec 7, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K2003/2241
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A sintering powder containing polyamide polymer and titanium dioxide particles, a process for laser sintering, and moldings produced from the sintering powder. The moldings formed using the powder of the invention have improved surface quality due to the powders having increased yellowing resistance when exposed to thermal stress during laser sintering. Moldings produced from the sintering powder have improved mechanical properties, in particular modulus of elasticity.