| abstract |
(57) [Summary] [Problem] Excellent rebound resilience, mechanical strength, WET / SET, A highly productive flexible polyurethane foam for a vehicle seat cushion with reduced air voids and cell roughness. A composition having a specific viscosity range, wherein at least one of a polyoxyalkylene polyol or a polyoxyalkylene polyol for producing a polymer polyol has a specific total unsaturation degree, a functional group number of 3 to 4, and a hydroxyl value. Using a resin premix (I) which is an alkylene polyol and an organic polyisocyanate (II), a flexible polyurethane foam for a vehicle seat cushion having a specific core density, rebound resilience and WET / SET is produced. |