| abstract |
(57) [Summary] [Problem] In a method using a castor oil-based polyol as a urethane polyol, it cannot be achieved by using a castor oil-based polyol while utilizing the goodness of the castor oil-based polyol. Technology that can improve the performance of polyurethane, such as mechanical properties, water resistance (hydrolysis resistance, corrosion resistance), and adhesion with metal and other objects, to a certain level. The purpose is to provide. SOLUTION: (a) Castor oil-based polyol (CO); (B) higher hydroxy fatty acid units (A) and polyamine units having primary or / and secondary amino groups (B) And an amide-based polyol (AB) comprising: a urethane polyol composition comprising: The polyurethane component is obtained by reacting the polyol component composed of this composition with the polyisocyanate component. |