| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical transparent adhesive sheet having excellent adhesive properties not only under normal temperature-normal humidity but also under high temperature-high humidity, and in which a shape change under high temperature-high humidity is less likely to occur.SOLUTION: Provided is an optical transparent adhesive sheet made of a cured matter of a thermocurable polyurethane composition, in which the thermocurable polyurethane composition includes a polyol component, a polyisocyanate component and a tackifier, the tackifier includes a rosin based tackifier, and the content of the tackifier is 1 to 10 wt.% to the thermocurable polyurethane composition.SELECTED DRAWING: Figure 1 |
