Abstract: A flexible, abrasion-resistant, dry to the touch thermoplastic elastomer made of a hydrogenated block copolymer having a weight-average molecular weight of 80,000 to 1,000,000, an olefin-based crystalline resin, a hydrocarbon-based softening agent for rubbers and an acryl-modified organopolysiloxane. At least the block copolymer and the organopolysiloxane are dynamically heat-treated in the presence of an organic peroxide.

Abstract: The present invention relates to a thermoplastic elastomer comprising: (a) a hydrogenated block copolymer having a weight-average molecular weight of 80,000 to 1,000,000, which is produced by hydrogenating a (A)-(B) type block copolymer and/or a (A)-(B)-(A) type block copolymer wherein (A) represents a vinyl aromatic compound block and (B) represents a conjugated diene polymer block, such that at least 90% of double bonds of a conjugated diene moiety of the block copolymers are saturated; (b) an olefin-based crystalline resin; (c) a hydrocarbon-based softening agent for rubbers; and (d) an acryl-modified organopolysiloxane, wherein a weight ratio of the component (a) to the component (b) ((a)/(b)) is 15:85 to 85:15; the component (c) is contained in an amount of 10 to 300 parts by weight based on 100 parts by weight of the component (a); the component (d) is contained in an amount of 0.