| 摘要 |
<p>The thermoplastic elastomer composition in the present invention comprises an ethylene. alpha -olefinic copolymeric rubber (A) whose intrinsic viscosity Ä eta Ü determined at 135 DEG C in decalin solvent is 3.5 to 6.8 dl/g, a mineral oil-based softener (B), an alpha -olefinic crystalline polymer (C) whose degree of crystallinity is 50% or higher and an alpha -olefinic amorphous polymer (D) whose melt viscosity at 190 DEG C is 50,000 cPs or less and whose degree of crystallinity is less than 50%, and at least a part of a mixture containing 20 to 63% by mass of the (A), 35 to 78% by mass of the (B), 1 to 12% by mass of the (C) and 1 to 12% by mass of the (D), based on 100% by mass of the total of the components (A), (B), (C) and (D), is crosslinked.</p> |
