| abstract |
This invention relates to an impact resistant material composed of polyether-based micro-cellular polyurethane foam ; more particularly, however, this invention relates to the impact resistant polyurethane foam having a new physical property, and a methods of foamed polyurethane as set forth hereunder, demonstrating a remarkable impact resistance effect and recovery force as well and furthermore, making it possible to control the specific gravity of molding in manufacture : mixing the prepolymer containing residual isocyanate or isocyanate monomer with resin consisting of ether-type polyol, plasticizer, and organic siloxane and casting this mixture for the preparation of foamed molding. |