| abstract |
To provide a polyurethane resin excellent in durability such as heat resistance and light resistance while securing good mechanical strength and flexibility, and a modified polyol suitable as a raw material thereof. A modified polyol is obtained by reacting a carbonyl group-containing polyol containing a carbonyl group with a vinyl monomer in the presence of a peroxide. By reacting the obtained modified polyol, polyisocyanate, and chain extender, a polyurethane resin excellent in durability such as heat resistance and light resistance is obtained while ensuring good mechanical strength and flexibility. [Selection figure] None |