| 摘要 |
A pressure-sensitive adhesive composition containing a pressure-sensitive adhesive that contains from 40 to 95% by mass of a rubber-based resin not containing a styrene-derived constituent unit, and a photochromic dye of a dithienylethene-based compound, wherein the content of the photochromic dye is from 0.40 to 8.00 parts by mass relative to 100 parts by mass of the pressure-sensitive adhesive, and a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer formed of the pressure-sensitive adhesive composition have excellent weather resistance that can withstand long-term use, a relatively rapid rate of color change from colored to colorless, and excellent peelability to release sheets. |
