| 摘要 |
<p>Provided is polyurethane foam made through foam molding of a foam liquid solution containing a polyol component (A), a polyisocyanate component (B), water (C), and a catalyst (D). The polyol component (A) contains 40-55 mass percent of a polyether polyol (a-1) that has a number average molecular weight of 6,000-8,000, and which has repeating units with a mole ratio of 5/95-25/75 derived from ethylene oxide and propylene oxide, and also contains 5-15 mass percent of a polyether polyol (a-2) that has a number average molecular weight of 600-2,000, and which has repeating units with a mole ratio of 0/100-20/80 derived from ethylene oxide and propylene oxide. For each 100 mass units of the polyol component (A), there are at least 2.0 mass units of water (C). Thus is provided polyurethane foam for a seat pad that achieves a balance of reduced shakiness and reduced stress relaxation, and specifically, is optimal for a vehicle seat pad.</p> |
