| abstract |
(57) [Summary] [PROBLEMS] To provide excellent shape retention force and restoring force of an optical resin layer, excellent adhesion to a plastic substrate, and releasability from a mold, high refractive index, and satisfy other required characteristics, and To provide an active energy ray-curable resin composition for an optical article having excellent transparency and curability. SOLUTION: Urethane (meth) acrylate (A) having three or more (meth) acryloyl groups in the molecule Of a diol (b1) having an aromatic ring in the main chain and having two terminal hydroxyl groups directly bonded to an oxyalkylene, an organic polyisocyanate (b2), and a hydroxyl group-containing (meth) acrylate (b3) Energy ray-curable resin composition, comprising an urethane (meth) acrylate (B) having two (meth) acryloyl groups as a product. |