| 摘要 |
<p>PURPOSE: An adhesive has excellent concavo-convex following performance and excellent heat resistance by restricting the gel fraction regulation, fracture elongation, and fracture stress. CONSTITUTION: An adhesive is has 3% or less gel fraction regulation calculated by formula: gel fraction regulation (%) =¦(G2-G1)/G2¦×100. The fracture elongation by a tensile test is 100-250 % and the fracture stress is 0.2-0.6 N/mm^2. In the formula, G1 is gel fraction just after the formation of an adhesive layer and G2 is an adhesive layer after 7 days storage under an environment of 23°C and 50% RH. An adhesive sheet (1A) includes a substrate (13) and an adhesive layer (11) formed of the adhesive.</p> |
