| abstract |
The invention relates to a method for producing an object from a precursor, the method comprising the steps: I) depositing a radically cross-linked resin on a carrier such that a layer of a construction material connected to the carrier is obtained that corresponds to a first selected cross-section of the precursor; II) depositing a radically cross-linked resin on a previously applied layer of the construction material such that an additional layer of the construction material is obtained that corresponds to a further selected cross-section of the precursor, and which is connected to the previously applied layer; III) repeating step II until the precursor is formed, wherein at least in step II, the deposition of a radically cross-linked resin is done by exposing and/or irradiating a selected region of a radically cross-linkable resin corresponding to the respectively selected cross-section of the object, and wherein the radically cross-linkable resin has a viscosity (23 °C, DIN EN ISO 2884-1) of ≥ 5 mPas to ≤ 100000 mPas. In the method, the radically cross-linkable resin comprises a curable component, in which NCO groups and olefinic C=C double bonds are present, wherein in the curable component, the molar ratio of NCO groups and olefinic C=C double bonds is in a range of ≥ 1:5 to ≤ 5:1. In the method, a further step IV) is carried out after step III): IV) Treating the precursor obtained after step III) under conditions that are sufficient to trimerize NCO groups present in the radically cross-linked resin of the obtained precursor, at least partially, to isocyanurate groups so that the object is obtained. The invention further relates to the use of a radically cross-linkable resin, which has a viscosity (23 °C, DIN EN ISO 2884-1) of ≥ 5 mPas to ≤ 100000 mPas, in an additive production method, wherein the resin comprises a curable compound, which has isocyanurate groups, NCO groups, and olefinic C=C double bonds.nLastly, the invention relates to a polymer obtainable from the crosslinking of such a resin. |