Adhesive composition and low temperature applicable adhesive sheet

摘要

An adhesive composition having pressure sensitivity includes an adhesive polymer and a nonadhesive polymer. The adhesive polymer has a glass transition point by a dynamic viscoelasticity measuring method of -60° C. to -5° C., and the nonadhesive polymer has a glass transition point by a differential scanning calorimeter of -5° C. or less, and a fusing point of higher than 25° C. by a differential scanning calorimeter, and also has compatibility with the adhesive polymer in uncrystallized state. The adhesive composition can effectively enhance pressure sensitive adhesivity at low temperatures and tack suppression effect at the same time, which makes easy an accurate positioning of the site for sticking, and which can be easily stuck by press fitting even in an environment of low temperature of lower than 0° C.