Process for manufacturing an object, and use of a radically cross-linkable resin in an additive manufacturing process

US11007711B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Dirk Achten · Leverkusen, DE
• Thomas Buesgen · Leverkusen, DE
• Roland Wagner · Feldkirchen-Westerham, DE
• Florian Stempfle · Cologne, DE
• Michael Ludewig
• Christoph Tomczyk · Leverkusen, DE

Key dates

• Filing date: Nov 8, 2018
• Grant date: May 18, 2021
• Expiry date: Nov 8, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2350/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A process for manufacturing an object involves the steps of: I) depositing a radically cross-linked resin on a carrier so that a layer of a structuring material joined to the carrier is obtained, said layer corresponding to a first selected cross-section of the object; II) depositing a radically cross-linked resin on a previously applied layer of the structuring material so that an additional layer of the structuring material is obtained which corresponds to a further selected cross-section of the object and which is joined to the previously applied layer; III) repeating step II) until the object is formed, wherein the deposition of a radically cross-linked resin in steps I) and II) includes the application of a radically cross-linkable resin to the carrier or the previously applied layer and is performed at least in step II) by applying energy to a selected region of a radically cross-linkable resin, corresponding to the selected cross-section of the object, the radically cross-linkable resin having a viscosity (23° C., DIN EN ISO 2884-1) of ≥5 mPas to ≤100,000 mPas. The invention further relates to the use of such a resin in an additive manufacturing process. The radically cross-…