Patent ID: 7491772

Claim:
A water-dispersible acrylic adhesive composition, which comprises: an acryl emulsion polymer obtained by an emulsion polymerization of a monomer mixture containing an alkyl (meth)acrylate ester; and a crosslinker which is a carbodiimide crosslinker, wherein the acryl emulsion polymer has a glass transition temperature of from −80 to −20° C., wherein said monomer mixture further contains 0.5 to 10 parts by weight of a carboxyl group-containing monomer based on 100 parts by weight of the entire monomer mixture, wherein when said adhesive composition is formed into a layered form to prepare an adhesive layer, said adhesive layer has, in tensile test, an initial modulus of elasticity of from 0.20 to 1.50 MPa, a maximum strength of from 1.0 to 8.0 MPa, and a breaking elongation of from 180 to 900%, and has a gelling fraction of 90% or more.