| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a material set of a polyurethane resin coating film with excellent film strength formed on a substrate. <P>SOLUTION: The material set of a polyurethane resin coating film comprises: a polyol obtained by the reaction of a polycarbonate polyol and a polycaprolactone polyol; and a prepolymer having an isocyanate group at the molecular end obtained by the reaction of a polytetramethylene glycol and a polyisocyanate, wherein the ratio of the polycarbonate polyol to the polycaprolactone polyol is not less than 65/35 in a mass ratio. The polyol in the material set of a polyurethane resin coating film further contains an organic metal catalyst for curing reaction, which is in a fine powdery state at normal temperature, and a curing reaction inhibitor. <P>COPYRIGHT: (C)2010,JPO&INPIT |
