Method for producing an at least partially coated object

US11981095B2 · kind B2 · utility

Assignee

• Stratasys Ltd. · US

Inventors

• Dirk Achten · Leverkusen, DE
• Thomas Büsgen · Leverkusen, DE
• Thomas Michaelis · Leverkusen, DE
• Roland Wagner · Feldkirchen-Westerham, DE
• Bettina Mettmann · Dormagen, DE
• Levent Akbas · Witten, DE
• Jurgen Hattig · Odenthal, DE
• Arnaud Guedou · Burscheid, DE

Key dates

• Filing date: Nov 22, 2017
• Grant date: May 14, 2024
• Expiry date: Feb 4, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2433/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing an at least partially coated object, comprising the step of producing the object from a construction material by means of an additive manufacturing method, the construction material comprising a thermoplastic polyurethane material. Following the production of the object, the method comprises the step of at least partially bringing a preparation into contact with the object, the preparation being selected from: an aqueous polyurethane dispersion; an aqueous dispersion of a polymer comprising OH groups, this dispersion also containing a compound comprising NCO groups; an aqueous preparation of a compound containing NCO groups, but not containing any polymers comprising OH groups; or a combination of at least two thereof. The invention also relates to an at least partially coated object that was obtained by a method according to the invention.