| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a foamed body, which has excellent hardness, dimensional stability, thermoforming property and mechanical strength and is chiefly suitable for the mid sole or inner sole for shoes. <P>SOLUTION: The foamed body has a specific gravity of 0.1 to 0.7 g/cc, and is obtained by cross-link of the following composition for a foamed body. The composition comprises: (a) a block copolymer, which contains a vinyl aromatic hydrocarbon and a conjugate diene, has 65 to 95 mass% content of the vinyl aromatic hydrocarbon and 5 to 35 mass% content of the conjugate diene, and shows a storage elastic modulus (E') of 3×10<SP POS="POST">8</SP>Pa or more at 30°C in a dynamic viscoelasticity measurement and at least one peak temperature in a range from 90°C to 125°C of tanδ that is a function of the dynamic viscoelasticity measurement; (b) isoprene rubber and/or diene rubber; (c) a filler; and (d) a foaming agent. In the composition, the mass ratio of the (a) component to the (b) component is (1 to 30)/(70 to 99), and the (c) component and the (d) component are included respectively by 1 to 50 pts.mass and 1 to 10 pts.mass, with respect to 100 pts.mass of the total of the (a) component and the (b) component. <P>COPYRIGHT: (C)2012,JPO&INPIT |
