| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyurethane-based sealant excellent in the balance of physical properties such as contamination resistance, cold resisitance, weather resisitance, heat resistance, etc. <P>SOLUTION: The sealant contains a polyurethane comprised of a high molecular polyol and an organic polyisocyanate, wherein, the both terminal groups of the high molecular polyol are hydroxy groups, and the number average molecular weight of the polycarbonate diol is 300-10,000. <P>COPYRIGHT: (C)2008,JPO&INPIT |
