PROBLEM TO BE SOLVED: To provide an adhesive composition achieving good skin adhesive force and small pain during peeling in spite of no adhesive deposit and further suitable for human with sufficient moisture vapor transmission rate.SOLUTION: There is provided an adhesive composition containing a copolymer obtained by copolymerizing a monomer composition containing components (a) to (e). (a) (meth)acrylic acid alkyl ester of 40 to 68 mass%. (b) alkoxy group-containing (meth)acrylic acid ester of 25 to 45 mass%. (c) a nitrogen-containing monomer having an ethylenic unsaturated double bond of 6 to 15 mass%. (d) a carboxyl group-containing monomer having an ethylenic unsaturated double bond of 0.5 to 5 mass%. (e) a polyfunctional monomer having a plurality of ethylenic unsaturated double bonds of 0.005 to 0.1 mass%.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】糊残りしないにも関わらず良好な皮膚粘着力と剥離時の痛みの小ささを両立し、更に充分な透湿度を発現する対人用に適した粘着剤組成物の提供。【解決手段】成分(a)~(e)を含有するモノマー組成物を共重合させることにより得られた共重合体を含有する粘着剤組成物。(a)(メタ)アクリル酸アルキルエステル40~68質量%(b)アルコキシ基含有(メタ)アクリル酸エステル25~45質量%(c)エチレン性不飽和二重結合を有する窒素含有モノマー6~15質量%(d)エチレン性不飽和二重結合を有するカルボキシル基含有モノマー0.5~5質量%(e)エチレン性不飽和二重結合を複数有する多官能モノマー0.005~0.1質量%【選択図】なし
