| 摘要 |
<p>A composition which comprises (A) an ethylene/α-olefin copolymer rubber exhibiting an intrinsic viscosity [θ] of 3.5 to 6.8 dl/g as determined in decalin at 135°C, (B) a mineral oil-base softener, (C) a crystalline α-olefin polymer having a degree of crystallinity of 50 % or above, and (D) a noncrystalline α-olefin polymer exhibiting a melt viscosity of 50000cP or below at 190°C and a degree of crystallinity of less than 50 % in amounts of 20 to 63 %, 35 to 78 %, 1 to 12 %, and 1 to 12 % by mass respectively based on the total amount of the components (A), (B), (C) and (D), and at least part of which is crosslinked.</p> |
