| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive sheet in which adhesiveness, high-temperature cohesiveness, and warpage resistance are realized at high levels; and to provide a water-dispersed acrylic pressure-sensitive adhesive composition suitable for forming the sheet. <P>SOLUTION: The water-dispersed acrylic pressure-sensitive adhesive composition contains: 100 pts.mass of a water-dispersed acrylic copolymer with a Tg of -70 to -50°C obtained by polymerization of a monomer starting material containing 60 mass% or more of an alkyl (meth)acrylate with a 8-12C alkyl group and 5 mass% or less of a radical polymerizable monomer with a carboxy group; and 10-40 pts.mass of tackifier resin, wherein, when a double-sided pressure-sensitive adhesive sheet is formed, it exhibits all of an SUS adhesive strength of 11 N/20 mm or greater, a PP adhesive strength of 8.5 N/20 mm or greater, a holding power of 1 hour or greater at 80°C, and a lifting height of 10 mm in adhesion test on a curved surface. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
