The present invention provides an adhesive for a dermal patch comprising an acrylate-base polymer in which the repetitive unit is represented by the formulae (1), (2) and (3): wherein M represents NH4<> or an alkali metal, and X represents an unsaturated monomer unit other than the formulae (1) and (2), containing 5 mole or more of acrylic acid (salt) represented by the formula (1) as a monomer unit, in which the content of ss-hydroxypropionic acid (salt) is 5,000 ppm or less per solid content of the polymer and having a stable shape retainability, adhesion and percutaneous absorptivity of medicines an production process thereof and an adhesive composition for a dermal patch containing the adhesive for a dermal patch, an aluminum compound and water.本發明係提供β-羥基丙酸(鹽)含量少,具有安定之保形性、黏著力及藥物之經皮吸收性,由丙烯酸鹽系聚合物所形成之貼劑用黏著劑組成物。如下述一般式(1)、(2)及(3)(式中,M係表示NH4+或鹼金屬,X係表示一般式(1)及(2)以外之不飽和單體單位。)所示,含有5莫耳%以上之一般式(1)之丙烯酸(鹽)之丙烯酸鹽系聚合物所成,β-羥基丙酸(鹽)含量係每聚合物固形物為5000ppm以下之貼劑用黏著劑、其製造方法及含該貼劑用黏著劑與鋁化合物與水之貼劑用黏著劑組成物。
