| 摘要 |
PROBLEM TO BE SOLVED: To produce a hard coat agent that has low shrinkage, is excellent in pencil hardness and abrasion resistance and is also excellent in flexibility.SOLUTION: An ultraviolet-curable hard coat agent is used, which includes a component (A): a polyfunctional urethane(meth)acrylate oligomer; a component (B): a colloidal silica modified with an acrylic group; a component (C): a polyfunctional thiol compound; and a component (D): a photopolymerization initiator. Additionally, a component (E): a fluorine-based surfactant having an ultraviolet reactive group is blended. The polyfunctional urethane(meth)acrylate oligomer is composed essentially of a dipentaerythritol hexaacrylate (DPHA) and a hexamethylene diisocyanate (HDI). As a polyfunctional thiol compound, a polyfunctional secondary thiol compound is used. |
