| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane expansion molding product, particularly polyurethane expansion molding product excellent in low density and durability. SOLUTION: The polyurethane expansion molding product is obtained by feeding a material for polyurethane expansion molding products to the interior of a cavity formed in a mold, expanding and molding the material for expansion molding products while depressurizing the interior of the cavity. A material for polyurethane expansion molding products obtained by compounding (A) a polyol with (B) a polyethylene oxide-based crosslinking agent and (C) an isocyanate containing at least either one of tolylene diisocyanate (TDI) or diphenylmethane diisocyanate (MDI), (D) a catalyst and (E) water is used as the material for polyurethane expansion molding product. According to the present invention, the polyurethane expansion molding product having high hardness and excellent in durability even if the molding product has low density can be provided. COPYRIGHT: (C)2004,JPO&NCIPI |
