| abstract |
(57) [Abstract] [Objective] The present invention provides a polyurethane one-part composition having rapid strength development, crack followability, high elasticity, and excellent durability, and a substrate which enables efficient curing promotion. To provide a coating method. According to the method of coating a substrate of the present invention, a polyurethane one-component composition is applied onto a substrate and cured to coat the substrate. A polyurethane one-component composition comprising a urethane prepolymer having two or more groups and (b) a one-component polyurethane composition comprising a compound having two or more oxazolidine rings in a molecule, and applied before curing , Water, hot water or hot steam. |