| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure sensitive adhesive sheet which can maintain high water-tightness even when it has a narrow width.SOLUTION: The pressure sensitive adhesive sheet for an electronic apparatus comprises a foam sheet of a crosslinked polyolefin resin and a pressure sensitive adhesive layer which is laminated and integrated on at least one surface of the foam sheet of a crosslinked polyolefin resin. The pressure sensitive adhesive layer comprises an acrylic polymer obtained by living radical polymerization with a molecular weight distribution (Mw/Mn) of 1.05 to 2.5 and a rosin-based tackifier resin. The acrylic polymer has alcoholic hydroxyl groups. The rosin-based tackifier resin has a hydroxyl value of 25 to 55, and its content is 5 to 40 pts.wt relative to 100 pts.wt of the acrylic polymer.SELECTED DRAWING: None |
