| abstract |
A laminate comprising a pair of polycarbonate optical sheets or films that are laminated together through a polarizing film layer and an adhesive layer of a photochromic composition comprising (I) a polyurethane urea resin and (II) a photochromic compound , wherein the photochromic composition further comprises (III) a polyisocyanate compound having at least two isocyanate groups in the molecule and the polyisocyanate compound having at least two isocyanate groups in the molecule (III) comprises 100 parts by mass of the compound having an isocyanate group attached to a secondary carbon (IIIA) and 20 to 100 parts by mass of at least one compound (IIIB) selected from the group consisting of hexamethylene diisocyanate, hexamethylene diisocyanate burette compound, hexamethylene diisocyanate isocyanurate and hexamethylene diisocyanate adduct compound. |