This invention, offers dispersed possibility or the production method, and this porous body itself of the melting possible porous body to the water. This porous body has the pore volume of approximately 3ml/g at least when it measured with the mercury polo symmetry, includes three dimensional open cell lattice, weight % of water soluble polymer substance 10 under, and surface active agent 5 - 90 weight % contains (however, the aforementioned porous body designates that they are not the globose beads which possess the average beads diameter 0.2 - 5mm as a condition). As for this production method, (a) the process which prepares the homogeneous blend in liquid medium of the polymer material and the surface active agent, (b) the process which prepares the liquid cryogen of the temperature which is effective in order to make the aforementioned liquid medium freeze quickly, (at temperature under freezing temperature of c) aforementioned liquid medium, the time when it is effective in order to make the aforementioned liquid medium freeze quickly, the process which cools the aforementioned liquid medium with the aforementioned liquid cryogen, and (d) making freeze making the aforementioned liquid medium dry which is frozen, the process which forms the porous body by removing the aforementioned liquid medium with sublimationIt includes.本発明は、水に分散可能または溶解可能な多孔質体の製造方法、およびこの多孔質体自体を提供する。この多孔質体は、水銀ポロシメトリーで測定した場合に少なくとも約3ml/gの細孔容積を有し、三次元オープンセル格子を含み、水溶性ポリマー物質 10重量%未満、および界面活性剤 5~90重量%を含有する(ただし、前記多孔質体は0.2~5mmの平均ビーズ直径を有する球形ビーズではないことを条件とする)。この製造方法は、(a)ポリマー材料と界面活性剤との液体媒体中の均質混合物を準備する工程、(b)前記液体媒体を急速凍結させるために有効な温度の液体寒剤を準備する工程、(c)前記液体媒体の凍結温度未満の温度で、前記液体媒体を急速凍結させるために有効な時間、前記液体媒体を前記液体寒剤で冷却する工程、および(d)凍結した前記液体媒体を凍結乾燥させて、昇華により前記液体媒体を除去することにより多孔質体を形成する工程、を含む。
