Patent ID: 8299156

Claim:
A water-dispersion acrylic pressure-sensitive adhesive, comprising: a water-dispersion acrylic polymer containing butyl acrylate and 2-ethylhexyl acrylate, and a tackifying resin-containing emulsion prepared using substantially no organic solvent, wherein a ratio of the butyl acrylate and the 2-ethylhexyl acrylate to the total amount of monomer components constituting the acrylic polymer is 90% by weight or more, a ratio of the 2-ethylhexyl acrylate to the butyl acrylate is 5/95 to 60/40, and wherein the tackifying resin is selected from the group consisting of a rosin-based tackifying resin, a terpene-based tackifying resin and a phenol-based tackifying resin.