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

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-linkable resin comprises a curable component which is obtained by reacting a polyisocyanate or a polyisocyanate descendant containing at least one oxadiazine trione group (formula I) with a compound that contains acrylate, methacrylate or vinyl ether double bonds and 25 Zerewitinoff active H atoms.