| abstract |
Provided is a thermoplastic elastomer composition for a sealing material that can be recycled and can produce a sealing material that is excellent in strength, flexibility, solvent resistance, gas permeation resistance, and sealing properties. SOLUTION: (A) at least one rubber component selected from the group consisting of ethylene / α-olefin copolymer rubber and isobutylene-isoprene copolymer rubber, and (B) α-olefin crystalline thermoplastic resin , An α-olefin amorphous thermoplastic resin, and at least one thermoplastic resin component selected from the group consisting of cyclic olefin thermoplastic resins, and (C) an inorganic compound, and (A) a rubber component And (B) a raw material composition having a rubber component content of 10 to 90% by mass with respect to a total of 100% by mass of the thermoplastic resin component, (D) dynamically heat-treated in the presence of a crosslinking agent. It is a thermoplastic elastomer composition for sealing materials which is substantially free of plasticizers and softeners. [Selection figure] None |