Patent ID: 7776968

Claim:
A thermoplastic elastomer composition comprising: (a) 100 parts by weight of at least one hydrogenated block copolymer; (b) 0.01 to 3 parts by weight of an organic peroxide; and (c) 1 to 80 parts by weight of a carboxylated liquid polybutadiene, wherein the carboxylated liquid polybutadiene is maleylated liquid polybutadiene, wherein a vinyl 1,2-bond in the microstructure of the polybutadiene of the component (c) accounts for 30% by weight or less, wherein a cis-1,4-bond in the microstructure of the polybutadiene of the component (c) accounts for 40% by weight or more, wherein the maleylated liquid polybutadiene has an acid value from 70 to 90 mgKOH/g, as determined in accordance with DIN ISO 3682, and wherein the maleylated liquid polybutadiene has a viscosity from 6 to 9 Pa·s, as determined in accordance with DIN 53214 (20° C.).