本发明提供：即使在用水冲洗之后，具有优异的平衡亲水性和耐磨性的固化物（例如，包含固化物的膜）也保持高的亲水性，并且污染物质不容易粘附（或可以容易地除去） ），即使在长期储存或加热后也保持亲水性; 和可以得到固化物的组合物。 固化物通过固化含有包含由特定化学式表示的构成单元的共聚物（i）和氨基树脂（ii）的组合物而制备。

Hydrophilic, the balance of the wear resistance excellent and, even if with maintaining a high hydrophilicity to water washing, if long-term storage or heating hardly contaminants attached to (or easily removable), a cured product that is hydrophilic is maintained (e. G., The art cured product film) made of, provides a composition that can be obtained a cured product art. And curing the copolymer (i) containing a structural unit represented by a specific chemical formula, the composition containing the amino resin (ii), to produce a cured product.