| abstract |
The present invention relates to a photocurable composition, wherein the composition comprises (A) polyester urethane acrylate or methacrylate (A). (B) contains acrylamide or methacrylamide component (B), and (C) photoinitiator (C). Polyester urethane acrylate, or methacrylate (A), is (A1) hydroxyalkyl acrylate, or hydroxyalkyl methacrylate, (A2) aliphatic diisocyanate, aliphatic polyisocyanate, alicyclic diisocyanate, alicyclic polyisocyanate, aromatic diisocyanate, Alternatively, it is obtained by reacting an aromatic polyisocyanate, or a mixture thereof, (A3) a polyester polyol, and (A4) optionally a second polyol. From this composition, a cured three-dimensional molded article with high toughness, high E-modulus and impact strength can be made, and this composition is particularly suitable for the production of three-dimensional articles by stereolithography. |