已经由亲水性膜形成方法，使用这样的亲水性处理剂这样的亲水性膜形成方法形成的高亲水持续性和极好的排水的亲水性能够形成亲水性涂层的和 提供亲水性涂层。 解决方案：将亲水化处理剂，用于金属基材的表面上形成亲水性膜，和含有可交联的颗粒亲水性树脂，亲水性树脂，特定的（甲基）丙烯酸类树脂 ，聚乙烯醇，并含有聚亚烷基醚系树脂的具体的分子量，所述组分的混合调整为特定的范围。 系统技术领域

The present invention high hydrophilic sustained and excellent drainage hydrophilicity capable of forming a hydrophilic coating having a formed by the hydrophilic film-forming method and such a hydrophilic film-forming method using such hydrophilicity to provide a hydrophilic coating.
SOLUTION: The hydrophilization treatment agent for forming a hydrophilic film on the surface of the metal substrate, and containing a crosslinkable particulate hydrophilic resin, a hydrophilic resin, a specific (meth) acrylic resin , polyvinyl alcohol, and contains a specific molecular weight of the polyalkylene ether resins, blending of the components is adjusted to a specific range.
.BACKGROUND