Problem to be solved: to provide an antiviral cure that is excellent in anti viral activity and is excellent in transparency, etc., and can maintain characteristics such as transparency of the substrate and color of the surface of the substrate.Curing material of electromagnetic wave curable resin containing copper compoundsAt least a portion of the copper compound isIt is exposed from the surface of the hardened material of the electromagnetic wave hardening resin.The surface composition ratio obtained by the energy dispersive X-ray analyzer of the electromagnetic wave curable resin containing the copper compound isIt is calculated based on the peak intensity of the characteristic X-ray of carbon element and copper element which is the main constituent element of resin component.The antiviral hardening material that its weight ratio is Cu: C = 1.0: 28.0 to 200.0.Diagram【課題】抗ウィルス性に優れるとともに、透明性等に優れ、基材の透明性や基材表面の色彩等の特性をそのまま維持することが可能な抗ウィルス性の硬化物を提供すること。【解決手段】銅化合物を含む電磁波硬化型樹脂の硬化物であって、上記銅化合物の少なくとも一部は、上記電磁波硬化型樹脂の硬化物の表面から露出してなり、上記銅化合物を含む電磁波硬化型樹脂のエネルギー分散型X線分析装置で求めた表面組成比は、樹脂成分の主構成元素である炭素元素と銅元素の特性X線のピーク強度に基づいて算出され、その重量比はCu:C=1.0:28.0~200.0であることを特徴とする抗ウィルス性の硬化物。【選択図】図1