| 摘要 |
PURPOSE:To obtain the title resin composition improved in the balance between conductivity and viscosity, by mixing a PS resin with a mineral oil, a butadiene rubber and a specified carbon black. CONSTITUTION:A PS resin (a) containing 100 pts.wt. PS component is mixed with 1-15 pts.wt. mineral oil (b) of a viscosity (25 deg.C) of 100-400cP, 1-10 pts.wt. butadiene rubber (c) of a butadiene content >=50% and 10-20 pts.wt. carbon black (d) of a DBP absorption >=100ml/100g, desirably, 150-400ml/100g, and the obtained mixture is kneaded at 130-250 deg.C to obtain the title composition of a volume resistivity >=1X10<10>OMEGA.cm and an MI >=5g/10min. |
