| abstract |
In a blocked isocyanate in which an isocyanate group of a hydrophilic group-containing polyisocyanate being a reaction product of a polyisocyanate and a polyoxyethylene compound is blocked by a blocking agent, the polyisocyanate includes an aliphatic polyisocyanate and/or an araliphatic polyisocyanate, and the blocking agent includes a piperidone-based compound shown by the following general formula (1). The oxyethylene group content in the hydrophilic group-containing polyisocyanate is 1.0% by mass or more and 35% by mass or less. |