| abstract |
To provide a photochromic composition which functions as an adhesive layer for bonding optical sheets comprising a polycarbonate resin or the like and which can yield an optical sheet laminate having excellent tight adhesion, heat resistance, solvent resistance and photochromic properties, particularly, a photochromic composition capable of yielding an optical sheet laminate such that, when a polymerizable monomer is polymerized with the optical sheet laminate buried therein, the elution of the photochromic composition from the optical sheet laminate can be minimized. A photochromic composition characterized by containing (A) a polyurethane resin having an isocyanurate skeleton and (B) a photochromic compound. |