| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a urethane resin excellent in heat resistance. <P>SOLUTION: The imide-modified urethane resin is obtained by performing reaction of a polyol (a1) having an aromatic hydrocarbon group, a polyisocyanate (b), and an acid anhydride (c) as essential components, wherein its imide group content based on weight of the resin is 0.01-3.0 mmol/g, and it is desirable that aromatic hydrocarbon group content of the imide-modified urethane resin based on weight of the imide-modified urethane resin is 35-60 wt.%, and glass transition temperature is 80-200°C. <P>COPYRIGHT: (C)2011,JPO&INPIT |
