| 摘要 |
This invention provides a water-dispersed PSA capable of ensuring adhesion to plastic film without a need for primer coating while not impairing the properties such as adhesive strength, heat resistance, etc. The water-dispersed PSA composition according to this invention comprises: an acrylic polymer (A) obtainable by polymerizing a monomer composition (A) comprising an alkyl (meth)acrylate as a primary component and a reactive functional group-containing monomer, an acrylic polymer (B) obtainable by polymerizing a monomer composition (B) comprising an alkyl (meth)acrylate as a primary component and a reactive functional group-containing monomer, the polymer (B) having a higher glass transition temperature than the polymer (A), and a crosslinking agent (C) reactive with the reactive functional group. In a DSC measurement of a PSA obtainable by drying the water-dispersed PSA composition, glass transition temperature peaks are detected at -25 °C or below, and between +30 °C to +190 °C, respectively. |
