| 摘要 |
<p>To provide a photochromic composition which serves as an adhesive layer for bonding an optical sheet or film that is formed of a polycarbonate resin or the like, and which is characterized in that a laminated sheet produced using the photochromic composition exhibits excellent adhesiveness, heat resistance, photochromic properties and perspiration resistance. [Solution] Provided is a photochromic composition which is characterized by containing (A) a polyurethane-urea resin that has a urea bond in a molecular chain, while having a tetrahydrofuran-insoluble fraction of 20.0-90.0% by mass and (B) a photochromic compound.</p> |
