ADHESIVE COMPOSITION AND ADHESIVE SHEET

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PROBLEM TO BE SOLVED : To provide an adhesive composition that has such easy adhesion as to bond an adherend from a point in contact with the adherend without accompanying external force as if a liquid is wet and spreads on a plane when attached to the adherend, further forms an adhesive layer having an excellent surface state and has excellent removability to simply peel with low peel strength during repeeling and an adhesive sheet using the adhesive composition. SOLUTION : An adhesive composition includes a polyisobutylene-based resin (A) having a weight-average molecular weight of 100, 000-800, 000, an olefin-based copolymer (B) having a constituent unit derived from ethylene (b1), a constituent unit (b2) derived from propylene and a constituent unit (b3) derived from a norbornene compound having a specific structure and a silane-based compound (C) containing 3-6 hydrosilyl groups. The content of the olefin-based copolymer (B) is 60-400 pts.mass based on 100 pts.mass of the component (A). COPYRIGHT : (C)2013, JPO&INPIT