Impact-absorbing material and sealing material comprising same

Abstract

Provided is an impact absorbing material comprising a resin composition which contains (A) a block copolymer comprising polystyrene in its both end blocks and a conjugated diene polymer in its middle part block and (B) a thermoplastic resin, wherein the block copolymer (A) contains (A1) a block copolymer whose middle part block is not hydrogenated and (A2) a block copolymer whose middle part block is hydrogenated, wherein the maximum peak temperature of loss tangent (tan δ) of the block copolymer (A1) as obtained by a dynamic viscoelasticity measurement is in the range of −20° C. or higher and lower than 25° C., and the maximum peak temperature of loss tangent (tan δ) of the block copolymer (A2) as obtained by a dynamic viscoelasticity measurement is in the range of −30° C. or higher and lower than 25° C.

Dependencies are inferred from the claim text.