| 摘要 |
The present invention provides a soft polyurethane foam which is obtained by expansion molding a starting foam liquid that contains a polyol, a polyisocyanate, a crosslinking agent, a foaming agent and a catalyst. This soft polyurethane foam is configured such that: a polyether polyol having a weight average molecular weight (Mw) of 3,000-12,000 and 3-4 functional groups is contained therein; the value of (ethylene oxide groups)/(propylene oxide groups) (in terms of a molar ratio) in all compounds contained therein as the crosslinking agent is 100 or more; and diphenylmethane diisocyanate is contained therein in an isocyanate equivalent of 70 or more. |
