| 摘要 |
A method for producing a polyurethane foam having a density of 0.1 g/cm 3 or more, including the step of reacting a polyol component and a polyisocyanate component, the polyol component containing (polyol A): a polyester-polyol having a hydroxyl value of from 45 to 115 mgKOH/g, obtained by polycondensing a polyhydric alcohol component containing a polyhydric alcohol having a side chain and a polybasic acid component; and (polyol B): a polyether-polyol having 3 functional groups and a hydroxyl value of from 15 to 40 mgKOH/g, wherein the weight ratio of the polyol A to the polyol B, i.e. polyol A/polyol B, is from 1.2 to 3. The polyurethane foam obtained according to the method of the present invention can be suitably used, for example, in shoe soles, cushioning materials for automobiles and other transportation vehicles, furniture, beddings, and the like.
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