| 摘要 |
PURPOSE:To make it possible to stably maintain electric charge for a long period of time by a method wherein a specific stabilizer is blended, and especially, the quantity of high trap charge is maintained on the side of high temperature. CONSTITUTION:At least a kind of stabilizer, selected from hindered amine, nitrogen-containing hindered phenol, metallic salt of hindered phenol, phenol, sulfur, and phosphorus stabilizers of 0.01 pts.wt. or more and 2.00 pts.wt. or less is blended for the polypropylene of 100 pts.wt. having the Mw/Mn ratio (Mw is weight average of molecular weight, and Mn is number-average of molecular weight). This material becomes to maintain high trap charge quantity on the side of the high-temperature by conducting an electlet treatment on the molded body after molding. As a result, electric charge can be retained for along period in a stable manner. |
