| abstract |
A composition for a platelet storage container that can stably maintain long-term storage of high unit platelets is mainly composed of (a) a polymer block A mainly composed of a vinyl aromatic compound and a conjugated diene compound. 30 to 40% by weight of a hydrogenated block copolymer comprising the polymer block B, and (b) obtained by copolymerizing ethylene and an α-olefin, having a density of 0.860 to 0.900 g / cm 3. The polyethylene has a composition of 35 to 65% by weight, and (c) a poly (methylpentene) or a copolymer of ethylene or α-olefin mainly composed of methylpentene, and the above (c) The component has an MFR of 3 to 20 g / 10 min, a density of 800 to 900 g / cm 3, and a melting point (Tm) measured by differential scanning calorimetry (DSC) of 180 ° C. or less. |