Additive manufacturing process using several thermoplastic polyurethanes

US11458671B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Dirk Achten · Leverkusen, DE
• Thomas Büsgen · Leverkusen, DE
• Michael Richard Kessler · Urbana, US
• Peter Reichert · Thousand Oaks, US
• Roland Wagner · Feldkirchen-Westerham, DE
• Nicolas Degiorgio · Krefeld, DE
• Jonas Kuenzel · Leverkusen, DE
• Ting Liu · Cologne, DE

Key dates

• Filing date: Apr 23, 2018
• Grant date: Oct 4, 2022
• Expiry date: Mar 26, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29K2075/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing an object, comprising the step of producing the object from a construction material by means of an additive manufacturing process, wherein the construction material comprises a plurality of thermoplastic polyurethane materials. The materials differ by at least one mechanical property such as the shore hardness or the elongation at break. The invention also relates to an object obtained according to said method.