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SOFT POLYURETHANE RESIN, AND SOFT POLYURETHANE RESIN MEMBER HAVING EXCELLENT VIBRATION RESISTANCE, DAMPING PROPERTY AND IMPACT ABSORPTION PROPERTY USING THE SAME
SOFT POLYURETHANE RESIN, AND SOFT POLYURETHANE RESIN MEMBER HAVING EXCELLENT VIBRATION RESISTANCE, DAMPING PROPERTY AND IMPACT ABSORPTION PROPERTY USING THE SAME
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机译:柔软的聚氨酯树脂和柔软的聚氨酯树脂具有出色的抗振性,阻尼特性和冲击吸收特性
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摘要
PROBLEM TO BE SOLVED: To provide a soft polyurethane resin having excellent vibration insulation properties, compressive permanent set and compressive creep properties.;SOLUTION: Disclosed is a soft polyurethane resin having excellent compressive permanent set and compressive creep properties with a rubber hardness of 50 or less produced from a composition obtained by reacting the following (A) polyol component and (B) polyisocyanate component. The (A) polyol component is composed of a mixture of polyol having an active hydroxyl group at the terminal with an (A-1) functional group number of 2.5 to 3.5 and a molecular weight of 4,000 to 7,000 and a hyper-branch-polymer having an active hydroxyl group at the (A-2) terminal, and the (B) polyisocyanate component is made of a prepolymer having an active isocyanate group at the terminal obtained by the reaction of polyoxy polypropylene polyol having a functional group number of 2.3 to 3.5 with a polyisocyanate compound.;COPYRIGHT: (C)2014,JPO&INPIT
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