Patent ID: 7906583

Claim:
A mixture of radial styrenic block copolymer and styrenic diblock copolymer comprising from 55 wt % to 10 wt % of radial styrenic block copolymer and from 45 wt % to 90 wt % of a styrene diene diblock copolymer and wherein the mixture has a styrene content of 10 wt % to 27 wt %; and wherein the radial styrenic block copolymer consists of i) a polystyrene block segment and ii) is a polyisoprene block segment having an end which comprises butadiene, wherein the block copolymer is characterized by the formula: (pS-pI-pB)n X pS being polystyrene, pI being polyisoprene, pB being polybutadiene, X being the residue of a multifunctional coupling agent used in the production of the radial block copolymer and n being a number greater than or equal to 3 and representing the average number of branches appended to X, and further wherein the pS component is present in an amount of at least 10 parts to 35 parts per 100 parts by weight of the radial block copolymer; and wherein the weight amount of polybutadiene in the pI-pB segment is less than or equal to 5%.