PROBLEM TO BE SOLVED: To provide a resin composition for a self-repairing material which is excellent in curability with active energy rays and is excellent in self-repairing property, stain resistance, bending resistance, flexibility and strength. It has been found that urethane (meth)acrylamide which can provide a cured product having a loss elastic modulus in a specific range is excellent in self-repairing property, stain resistance and the like. The urethane (meth)acrylamide is composed of polyisocyanate, low molecular weight polyol, (meth)acrylamide having a hydroxyl group and (meth)acrylate having a hydroxyl group, and the content of the hard segment is 20 to 70% by mass. Therefore, by containing the urethane (meth)acrylamide, a resin composition for a self-repairing material, which has high curability against active energy rays and can form a cured product having excellent self-repairing property, stain resistance, and bending resistance I was able to get things.【課題】活性エネルギー線での硬化性に優れ、自己修復性、耐汚染性、耐屈曲性、柔軟性、強度に優れた自己修復材料用樹脂組成物を提案するもの。【解決手段】特定範囲の損失弾性率を有する硬化物を提供できるウレタン（メタ）アクリルアミドが自己修復性、耐汚染性等に優れることを見出した。該ウレタン（メタ）アクリルアミドがポリイソシアネート、低分子量ポリオール、水酸基を有する（メタ）アクリルアミド及び水酸基を有する（メタ）アクリレートからなり、そのハードセグメントの含有量は２０～７０質量％であることが特徴であって、該ウレタン（メタ）アクリルアミドを含有することにより、活性エネルギー線に対する硬化性が高く、優れた自己修復性、耐汚染性、耐屈曲性を有する硬化物を形成できる自己修復材料用樹脂組成物を取得することができた。
