Composition comprising polyesters for additive manufacturing

US12173111B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• David Bléger · Düsseldorf, DE
• Peter Altenbuchner · Kohlenbissen, DE
• Emmanouil Spyrou · Schermbeck, DE
• Thomas Pastor · Dülmen, DE
• Marie-Theres Wilkes · Dorsten, DE
• Odo Wunnicke · Dresden, DE
• Benjamin Willy · Goldkronach, DE
• Maik Dimmerling · Johannesweg, DE
• Kim Bühning · Herten, DE
• Christiane Zatocil · Herten, DE
• Elke Gollan · Herne, DE

Key dates

• Filing date: Dec 4, 2020
• Grant date: Dec 24, 2024
• Expiry date: Jul 1, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B33Y10/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to an additive manufacturing process using a composition comprising the reaction product of a polyester polyol and a compound comprising at least one functional group that can react with a hydroxyl-group of the polyester polyol and at least one further functional group, selected from acrylate-or methacrylate-group, wherein the polyester polyol is based on at least one organic acid comprising at least two carboxyl groups or its anhydride and at least one polyol comprising at least two hydroxy-groups, wherein the reaction product has a glass transition temperature Tg of below 23° C., wherein the composition optionally further comprises a photoinitiator, as a photopolymerizable material in.