| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydrogel capable of being peeled from an adherend without being torn to pieces and having excellent adhesiveness.SOLUTION: The adhesive hydrogel contains a polymer matrix, water, and a polyhydric alcohol. The polymer matrix is composed of a copolymer of a monofunctional monomer having one ethylenically unsaturated group, an aromatic divinyl compound (A), and a polyfunctional monomer (B). The monofunctional monomer contains a (meth)acrylamide-based monomer, and the polyfunctional monomer (B) is a polyfunctional monomer containing at least one (meth)acryloyloxy group. The molar ratio of the content of the structural unit derived from the monofunctional monomer and the content of the structural unit derived from the polyfunctional monomer (B) is 1:5.0×10to 1:1.5×10. |
