| abstract |
[PROBLEMS] A photo-curing adhesive composition that has low viscosity, excellent curability, excellent peel adhesion even when a completely different adherend such as polyolefin and metal is bonded, and excellent shear adhesive strength at high temperatures. Providing things. SOLUTION: Other than the component (A) having an oxetanyl group, the compound (B) having an epoxy group, the phosphate ester compound (C) having a phosphate group, the photocationic polymerization initiator (D) and the component (C) A photocurable adhesive composition comprising a compound (E) having an ethylenically unsaturated group, wherein the cured product has a storage elastic modulus (E ′) at 85 ° C. and 1 Hz of 100 MPa or more. [Selection figure] None |