| 摘要 |
PROBLEM TO BE SOLVED: To provide a raw material blending composition for manufacturing a hard polyurethane foam having a high storage stability.SOLUTION: As a raw material blending composition for manufacturing a hard polyurethane foam, there is used a composition containing an aromatic polyester polyol, water and an amine compound represented by formula (1) (wherein Rto Rare each independently a methyl group or an ethyl group; and n is an integer of 2 to 6). |
