Blend of thermoplastic polymers with block radial butadiene-styrene polymers

An unvulcanized radial block copolymer mixture having a high degree of clarity and resealability consisting essentially of (a) from about 10 - 90% by weight of a butadiene-styrene radial block copolymer having a butadiene content in the range of about 85 - 60% by weight and a styrene content in the range of about 5 - 40% by weight, (b) from about 90 - 10% by weight of a butadiene-styrene radial block copolymer having a different butadiene-styrene content in the range of about 85 - 60% by weight and a styrene content in the range of about 15 - 40% by weight and (c) about 5 - 75% by weight of said radial block copolymer mixture of a clear polymeric material selected from the group consisting of polyether and polyester urethane polymers and mixtures of said clear polymeric material, both said radial block copolymers having an average molecular weight of at least 150,000 as measured by inherent viscosity in toluene, wherein said polyether urethane polymers are the reaction products of polyether glycols and aromatic diisocyanates and said polyester urethanes are the reaction products of linear hydroxyl terminated aliphatic polyesters, an aromatic diisocyanate and an aliphatic diol.