| 摘要 |
A polyurethane foam is obtained by mixing a polyol component and an isocyanate component under stirring to effect foaming, wherein water is used as a blowing agent in the polyol component, hydrous thermoplastic synthetic resin particles are added to at least one component of the polyol component and the isocyanate component, and thermoplastic synthetic resin porous particles having communicating pores formed by evaporation of water from the hydrous thermoplastic synthetic resin particles are present in the polyurethane foam after forming.
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