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    • 10. 发明专利
    • BED
    • JPH01250253A
    • 1989-10-05
    • JP7987188
    • 1988-03-31
    • DAINIPPON INK & CHEMICALS
    • TAMURA YUJIITO SHICHINOSUKETSUNEKAWA YASUJI
    • A47C27/00A61G7/00
    • PURPOSE:To obtain cushion properties more excellent than those of a water bed and to prevent the contamination of the circumference with water flowing out if a seal material is ruptured, by using a gel like resin composition as a cushion layer. CONSTITUTION:As a gel like resin composition, a (highly) water absorbable or swellable resin is swollen or gelled by a liquid composition containing water and, if necessary, a low-MW hydrophilic compound as main constitutional components before use. As the (highly) water absorbable or swellable resin, there are a semi-synthetic resin and a synthetic resin both of which uses starch or cellulose but a urethane resin using a so-called NCO terminal urethane prepolymer obtained by reacting polyoxyalkylene glycol based on ethylene oxide with polyisocyanate is pref. The gel like resin composition pref. contains water in an amount of 50% by wt. of the resin and the 50% compression strength thereof is pref. 0.2kg/cm or less, especially, 0.1kg/cm or less.