To provide a black-based thermoplastic elastomer composition having flexibility and a rubber-like property similar to those of vulcanized rubber, not generating whitening phenomenon even when used for a long period as an automobile component material, e.g. wind seal, door seal or trunk seal which is a body seal for automobiles, excellent in weather resistance and being recyclable.
The black-based thermoplastic elastomer composition comprises (A) an ethylene-α-olefin-based copolymer rubber, (B) a mineral oil-based softening agent, (C) an α-olefin-based crystalline polymer and (D) an α-olefin-based amorphous polymer and further comprises a weather resistance and carbon black. The elastomer composition has ≤20 ppm sulfur (S) content in the thermoplastic elastomer composition or ≤0.4 mass% sulfur (S) content in the carbon black.
NAKANISHI HIDEO
TANAKA MINORU
KOBAYASHI MASAHITO
Koji Kikawa
Takeshi Higuchi