US 12,187,833 B2
Radiation-curable composition for use in rapid prototyping or rapid manufacturing methods
Alfred Hohmann, Schmitten (DE)
Assigned to Kulzer GmbH, Hanau (DE)
Appl. No. 17/437,278
Filed by KULZER GMBH, Hanau (DE)
PCT Filed Mar. 10, 2020, PCT No. PCT/EP2020/056354
§ 371(c)(1), (2) Date Sep. 8, 2021,
PCT Pub. No. WO2020/182814, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 10 2019 106 151.2 (DE), filed on Mar. 11, 2019.
Prior Publication US 2022/0162370 A1, May 26, 2022
Int. Cl. C08F 2/50 (2006.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01); C08F 290/06 (2006.01); B33Y 10/00 (2015.01)
CPC C08F 290/067 (2013.01) [B33Y 70/00 (2014.12); B33Y 80/00 (2014.12); C08F 2/50 (2013.01); B33Y 10/00 (2014.12)] 13 Claims
 
1. Polymerisable radiation-curable composition comprising
(i) monomers and
(ii) and least one further component,
wherein
(i) the monomers comprise
(a.1) at least one triacrylate derived from 1,3,5-tris(ω-hydroxyalkyl) isocyanurate, wherein the hydroxyalkyl residue each independently comprises 1 to 8 C-atoms, and
(a.2) at least one di-functional monomer, not being a urethane acrylate or urethane methacrylate, which comprises (b) and/or (c),
(b) di-functional acrylates having a bivalent alicyclic group and/or di-functional methacrylates having a bivalent alicyclic group,
(c) at least one disubstituted 4,4′-di(oxabenzol) dialkyl methane of formula I

OG Complex Work Unit Chemistry
with R1, R2, R5 and R6 each independently selected from H or C1 to C4-alkyl, and with R3 and R4 each independently bivalent C1 to C4-alkylene, with n=0 to 6 and m=0 to 6, and optionally
(d) at least one at least di-functional urethane (meth)acrylate,
(e) at least one mono-functional acrylate having an alicyclic group and/or mono-functional methacrylate having an alicyclic group, and
(ii) the at least one further component comprises
at least one photo-initiator for the UV- and/or Vis spectral region or a photo-initiator system for the UV- and/or Vis spectral region, and optionally a stabiliser.