| 摘要 |
<p>A cold-storage material with excellent shape stability which is obtained by freezing a composition comprising: 100 parts by weight of a highly water-absorbing resin in which water has been absorbed in an amount of 40 to 150 times by weight the amount of the highly water-absorbing resin on a dry basis; and at least 25 parts by weight of an aqueous polyvinyl alcohol solution having a concentration of 10 wt.% or higher. The process comprises causing a highly water-absorbing resin to absorb water in an amount of 40 to 150 times by weight the amount of the highly water-absorbing resin on a dry basis, separately preparing an aqueous polyvinyl alcohol solution having a concentration of 10 wt.% or higher, subsequently mixing the water-absorbing resin containing water absorbed therein with the aqueous solution to produce a composition for a cold-storage material, and then freezing the resultant composition.</p> |
