Patent ID: 7452595

Claim:
A heat-sensitive adhesive material comprising: a substrate; and a heat-sensitive adhesive layer comprising a thermoplastic resin and a solid plasticizer, and being so configured as to be heated and applied to an adherend, wherein the heat-sensitive adhesive material exhibits such an adhesive strength to the adherend as to increase with time from immediately after applying the heat-sensitive adhesive material to the adherend, and wherein the solid plasticizer comprises at least two different benzotriazole derivatives selected from compounds represented by following Formula (A): wherein R 1 is one of a hydrogen atom, a halogen atom and an alkyl group; m is an integer of 1 to 4; and X is one of a hydrogen atom, an alkyl group, an aryl group, an aralkyl group and a group represented by following Formula (B): wherein R 2 is one of a hydrogen atom, a halogen atom, an alkyl group and hydroxyl group; and n is an integer of 1 to 5.