| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a porous polyurethane elastic material wherein the strength, hysteresis loss, water absorbing properties, permeability, and the like are improved, without changing fundamental properties of the general-use polyether-type polyurethane foam. SOLUTION: A polyether-type polyol to which an inorganic salt having an eliminable crystallization water is added, is reacted with a polyisocyanate to form a foam. The inorganic salt is removed from the foam to produce a porous polyurethane elastic material. |
