| abstract |
PROBLEM TO BE SOLVED: To obtain a hard coating agent having low shrinkage, excellent pencil hardness, wear resistance and excellent flexibility. SOLUTION: (A) component: polyfunctional urethane (meth) acrylate oligomer, (B) component: colloidal silica modified with acrylic group, (C) component: polyfunctional thiol compound, (D) component: initiation of photopolymerization And an ultraviolet curable hard coat agent containing the agent. Furthermore, (E) component: The fluorine-type surfactant which has an ultraviolet-reactive group is mix | blended. The polyfunctional urethane (meth) acrylate oligomer is composed of dipentaerythritol hexaacrylate (DPHA) and hexamethylene diisocyanate (HDI) as essential components. A polyfunctional secondary thiol compound is used as the polyfunctional thiol compound. [Selection figure] None |