PROBLEM TO BE SOLVED: To provide a non-aqueous adhesive patch capable of simultaneously satisfying the problems such as decrease in adhesiveness during water absorption and sweating, adhesion between adhesive layers, lack of re-adhesion to skin, and skin irritation during application and peeling. To do. An acrylic acid alkyl ester-based copolymer, which is a copolymer of a monomer mixture of a monomer A and a monomer B, wherein the monomer A has a glass transition temperature (Tg) when the monomer A is homopolymerized. Is a monomer that becomes a polymer of 270 K or more, and the monomer B is a monomer that becomes a polymer having a glass transition temperature (Tg) of 220 K or less when the monomer B is homopolymerized, with respect to the total mass of the monomer mixture. A non-aqueous system obtained by blending an acrylic acid alkyl ester-based copolymer in which the proportion of the monomer A is 30% by mass or more and 50% by mass or less and a hydrophilic adhesive having a crosslinked structure in an adhesive layer. Patch. [Selection diagram] None【課題】吸水時及び発汗時の粘着性の低下、粘着剤層同士の付着、皮膚への再付着性のなさ、貼付時及び剥離時の皮膚刺激といった課題を同時に満足できる非水系貼付剤を提供すること。【解決手段】モノマーＡとモノマーＢからなるモノマー混合物の共重合体であるアクリル酸アルキルエステル系共重合体であって、前記モノマーＡは、該モノマーＡをホモ重合したときガラス転移温度（Ｔｇ）が２７０Ｋ以上のポリマーとなるモノマーであり、前記モノマーＢは、該モノマーＢをホモ重合したときガラス転移温度（Ｔｇ）が２２０Ｋ以下のポリマーとなるモノマーであり、前記モノマー混合物の全質量に対して、前記モノマーＡの割合が３０質量％以上５０質量％以下の割合である、アクリル酸アルキルエステル系共重合体と、架橋構造を有する親水性粘着剤とを粘着剤層に配合してなる非水系貼付剤。【選択図】なし
