RE-RELEASABLE PRESSURE-SENSITIVE ADHESIVE, PRESSURE-SENSITIVE ADHESIVE LAYER, AND PRESSURE-SENSITI

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PROBLEM TO BE SOLVED : To provide a re-releasable pressure-sensitive adhesive which shows little rise in adhesiveness even after a long term even when it is applied to a coated surface and can be easily re-released without leaving any adhesive, and to provide a pressure-sensitive adhesive member coated therewith. SOLUTION : There are provided a re-releasable pressure-sensitive adhesive comprising an aqueous dispersion comprising a graft polymer composed of a main chain comprising a room-temperature pressure-sensitive adhesive copolymer based on an alkyl acrylate with a 1-14C alkyl group and side chains comprising a polymer of a glass transition temperature of 70-150°C and being capable of giving a pressure-sensitive adhesive layer exhibiting 180 degree peeling adhesive force of 600 g/20 mm or below to a coated steel sheet at 60°C after the lapse of three days and a pressure-sensitive adhesive member having a pressure-sensitive adhesive layer comprising the adhesive on at least either surface of a support. The adhesive shows little rise in its adhesiveness even after a long term even when it is applied to a coated surface such as a coated steel sheet, can be easily re-released without any remaining adhesive, and has excellent low-temperature adhesiveness as well. COPYRIGHT : (C)2009, JPO&INPIT