| 摘要 |
PURPOSE:To obtain a light-shielding film having excellent light-shielding performance, giving little reflected light and having excellent heat-resistance, by compounding a propylene-ethylene block copolymer with a specific amount of carbon black. CONSTITUTION:100pts.wt. of a propylene-ethylene block copolymer having an ethylene content of 2-30wt% and a melt flow index of 0.5-10g/10min is compounded with 2-15pts.wt. of carbon black (e.g. channel black).
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