PROBLEM TO BE SOLVED: To provide a novel copolymer having elastic feeling.SOLUTION: There is provided a copolymer having one or more kind of constitutional unit (a) derived from a hydrophobic monomer having a specific structure and one or more kind of constitutional unit (b) derived from a hydrophilic monomer represented by the following general formula (2) as essential constitutional units, and weight average molecular weight of 20000 to 110000.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】弾力感を有する新規のコポリマーを提供することを課題とする。【解決手段】特定の構造を有する疎水性モノマーから誘導される一種又は二種以上の構成単位(a)と、下記一般式(2)で表される親水性モノマーから誘導される一種又は二種以上の構成単位(b)を必須構成単位として有する、重量平均分子量が20000~110000であるコポリマー。【選択図】無し
