| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a polymer composition from which a molded product having high heat resistance, low water absorption, low specific gravity, and also excellent impact resistance can be obtained, and the molded product obtained by using the polymer composition. <P>SOLUTION: The polymer composition comprises aβ-pinene polymer (a) having a specific gravity of 0.85 to less than 1.0 and a glass transition temperature of not lower than 80°C and an aromatic vinyl block copolymer (b) which comprises 10-35 mass% aromatic vinyl polymer block and 65-90 mass% hydrogenated conjugated diene polymer block and has a weight average molecular weight of 100,000-250,000 at a ratio such that the component (a) is 60-95 pts.mass and the component (b) is 5-40 pts.mass, and the sum of the component (a) and the component (b) is 100 pts.mass. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
