| 摘要 |
A polymer composition obtained by dynamically crosslinking a crosslinkable polymer composition which comprises (a) a block copolymer comprising two or more vinylaromatic polymer blocks and one or more (hydrogenated) conjugated diene polymer blocks, (b) an olefin copolymer obtained from ethylene and a C 4- 12 .alpha.-olefin and having a density of 0.88 to 0.92 g/cm3, (c) a softener , and (d) an organic peroxide in respective amounts satisfying the following relationships (1) to (3): (1) 0.66 <= Wb / Wa <= 4; (2) 0 <= Wc / ( Wa + Wb + Wc) <= 0.25; (3) 0.001 <= Wd / (Wa + Wb + Wc) <= 0.01 (wherein Wa, Wb, Wc, and Wd represent the contents (by weight) of the ingredients (a), (b), (c), and (d), respectively, in the polymer composition before dynamic crosslinking).< /SDOAB>
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