Pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet

摘要

The present invention provides a pressure-sensitive adhesive composition excellent in the anti-foaming release property and high-temperature stress relaxation property, and a pressure-sensitive adhesive layer composed of the pressure-sensitive adhesive composition. The invention relates to a pressure-sensitive adhesive composition including an acrylic polymer which is formed from a monomer component including methyl methacrylate and has a glass transition temperature (Tg) of -40°C or more, wherein the pressure-sensitive adhesive composition has a shear storage elastic modulus at 85°C as measured by a dynamic viscoelasticity measurement of from 1×10 4 to 3×10 5 Pa.