| 摘要 |
PURPOSE:To obtain a polyurethane foam which has satisfactory adherence to a surface material, e.g. paper, an aluminum or iron sheet, even when produced without using a vaporizable foaming agent, e.g. a chlorofluorocarbon, or even when having a high expansion ratio. CONSTITUTION:This method comprises reacting an organic polyisocyanate with a polyol and water in the presence of a halogen-free aliphatic phosphoric ester having a mol.wt. of 140-270. |
