| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a novel optical adhesive tape or sheet which can exhibit excellent resistance to yellow discoloration.SOLUTION: There is provided an optical adhesive tape or sheet 100 having a transparent adhesive layer 10. The adhesive tape or sheet 100 is a substrate-less double-sided adhesive tape or sheet 100. The adhesive layer 10 contains an acrylic adhesive polymerized using an azo-based polymerization initiator and containing a hindered phenolic antioxidant. The adhesive layer further contains a tackifier resin in the amount of 10 to 60 pts.mass relative to 100 pts.mass of the acrylic adhesive, and, in a measurement of a pyrolysis gas by a gas chromatography mass spectrometer, a proportion of main peak intensity attributed to the azo-based polymerization initiator relative to main peak intensity attributed to the residual hindered phenolic antioxidant is 0.4 or less.</p> |
