| abstract |
The present invention provides a pressure-sensitive adhesive (PSA) sheet which is formed using a non-toluene solvent-based acrylic PSA composition, and which minimizes corrosion of metals not in contact with the PSA sheet. PSA sheet 1 has PSA layers 21, 22 formed from a solvent-based PSA composition. The PSA composition includes, within an organic solvent that is substantially free of toluene substances, an acrylic polymer synthesized in presence of a sulfur-containing chain transfer agent. Moreover, in a gas generation test whereby PSA sheet 1 is heated at 85° C. for one hour, the emission of sulfur-containing gas is 0.043 μg or less per 1 cm 2 surface area of PSA sheet 1 , when converted to SO 4 2− . |