| 摘要 |
PURPOSE:To provide the title compsn. which gives moldings having improved coatability after plasma treatment, by blending carbon black having a specified average particle size and a specified surface area with a polypropylene resin. CONSTITUTION:100pts.wt. polypropylene resin (e.g. ethylene/propylene copolymer), 0.01-0.6pts.wt. carbon black (e.g. furnace black or channel black) having an average particle size of 5-40mmu and a specific surface area of 50-1,100m<2>/g and optionally, additives such as antioxidant, thermal stabilizer, ultraviolet absorber, flame retarder, etc., are mixed together to obtain the desired polypropylene compsn. When the surface of a molding obtd. from the compsn. is treated with plasma and coated, a coating film having excellent peel strength, water resistance, etc., can be formed.
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