ADHESIVE COMPOSITION AND ADHESIVE SHEET

摘要

Disclosed is an adhesive composition which enables to form an adhesive layer having sufficient heat resistance so that the adhesive power hardly decreases even when an object to which the layer is adhered to is heated. The adhesive composition contains a (meth)acrylate polymer (A) having a weight average molecular weight of 100,000-2,000,000 and a glass transition temperature of from -40°C to +65°C, while containing a repeating unit derived from acrylonitrile, a monomer (B) having three or more polymerizable carbon-carbon double bonds, an oligomer (C) having four or more polymerizable carbon-carbon double bonds and a photopolymerization initiator (D). This adhesive composition contains 30-95% by mass of the polymer (A), 1-50% by mass of the monomer (B) and 1-50% by mass of the oligomer (C) (when (A) + (B) + (C) = 100% by mass).