UV-CURABLE COATING COMPOSITION USEFUL AS TOP SURFACE COATING FOR PLASTIC SUBSTRATE AND MOLDED ARTICLE COMPRISNG A CURED COATING LAYER FORMED FROM THE SAME

摘要

PURPOSE: A UV-curable paint composition is provided to have excellent adhesion to polycarbonate material, heat resistance, abrasion resistance, hardness, chipping resistance, and weatherability. CONSTITUTION: A UV-curable paint composition comprises polyfunctional aliphatic urethane acrylate oligomer having six or more polymerizable functional groups, a Benzotriazole-modified aliphatic urethane acrylate oligomer, a polyfunctional acrylate monomer, a photopolymerization initiator, a UV-absorbing agent, and a photostabilizer. The polyfunctional aliphatic urethane acrylate oligomer is a reaction product of a bifunctional isocyanate compound, hydroxy acrylate monomer containing three or more polymerizable unsaturated groups per a molecule.