| abstract |
(57) [Summary] [PROBLEMS] To obtain a composition excellent in curing shrinkage resistance having sufficient curing characteristics not only by ultraviolet light but also by visible light, and has flexibility, adhesiveness, and electrical insulation properties. , Chemical resistance, heat resistance, Provided is a visible light curable resin composition from which a cured product excellent in water resistance, PCT resistance and the like can be obtained. According to a first basic aspect of the visible light curable resin composition, (A) a photosensitive resin component is a vinyl resin having one or more hydroxyl groups and an aromatic ring in a molecule. (B) a component which promotes photopolymerization or polymerization, comprising a photopolymerization initiator, a sensitizing dye having absorption in a wavelength region of 400 to 600 nm, and a tertiary thiophosphite. In the second embodiment, It is characterized by further containing (C) an epoxy resin and / or (D) a saturated polyester resin in addition to the above components. In the third embodiment, it further comprises (E) a silane coupling agent in addition to the above components. . |