TRIBLOCK COPOLYMER PELLET AND POLYMER COMPOSITION

PROBLEM TO BE SOLVED: To provide a triblock copolymer pellet affording a polymer composition having excellent blocking resistance with a slight ash content and having excellent transparency, flexibility and low-temperature impact resistance and good fluidity when compounded with a polyolefinic resin. SOLUTION: The triblock copolymer pellet is obtained by adding and applying 0.05-1.0 pt.mass of a metal soap (b) to 100 pts.mass of the pellet of at least one kind of triblock copolymer (a) selected from a triblock copolymer and a hydrogenated material thereof. The triblock copolymer is composed of a polymer block A1 consisting essentially of an aromatic vinyl compound unit, a polymer block A2 consisting essentially of an aromatic vinyl compound unit and a polymer block B consisting essentially of a conjugated diene unit and has 0.10-0.80 ratio [Mw(A1)/Mw(A2)] of the weight-average molecular weight [Mw(A1)] of the polymer block A1 to the weight-average molecular weight [Mw(A2)] of the polymer block A2 and -40 to 0°C glass transition point. COPYRIGHT: (C)2008,JPO&INPIT