Patent ID: 7074855

Claim:
A thermoplastic elastomer composition comprising: 100 parts by weight of at least one addition block copolymer (I) selected from among block copolymers and hydrogenated products thereof, wherein the block copolymers comprise at least one hard segment polymer block (A) comprising alkylstyrene-derived functional units or aromatic vinyl compound units having a functional group (b), wherein the functional group (b) is at least one functional group selected from functional groups having active hydrogen atoms selected from the group consisting of â€”OH, â€”SH, â€”NH 2 , â€”NHR, â€”CONH 2 , â€”CONH, â€”SO 3 H, â€”SO 2 H, and â€”SOH; functional groups having nitrogen atoms; functional groups having carbonyl groups; functional groups having thiocarbonyl groups; epoxy groups; and thioepoxy groups in the polymer block (A) of the addition block copolymer (I), and at least one polymer block (B) comprising conjugated diene compound units, and the addition block copolymers being crosslinked at least in the polymer block (A); wherein the block copolymers are crosslinked at least in the polymer block (A) and a crosslinked unit between the polymer block (A) comprises the alkylstyrene-derived functional units or the functional group (b); 10 to 300 parts by weight of a polyolefin (II); and 0 to 300 parts by weight of a rubber softener (III).