| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rigid cured object having a high glass transition temperature and excellent uniformity in transparency, and to provide a photosemiconductor device using the same, and a urethane resin composition providing those. <P>SOLUTION: The urethane resin composition comprises a liquid A containing a polyol component and a liquid B containing a polyisocyanate component, wherein the liquid A contains a tri- or higher functional polyol compound having a hydroxyl value of 600-1,300 mgKOH/g and a molecular weight of ≤400. <P>COPYRIGHT: (C)2011,JPO&INPIT |
