| 摘要 |
PROBLEM TO BE SOLVED: To provide a high concentrated antiblocking agent masterbatch resin composition for adding to a polypropylene-based resin having excellent economical efficiency, dispersibility and fisheye characteristics and to provide a polypropylene film using the same.SOLUTION: There is provided a high concentrated antiblocking agent masterbatch resin composition or the like obtained by melt-kneading 5 to 20 pts.wt. of (A) shaped amorphous silica satisfying the following properties (1) to (4), 75 to 95 pts.wt. of (B) a propylene-based polymer having a melt flow rate (at 230°C under a load of 2.16 kg) of 0.1 to 20 g/10 min and 0 to 5 pts.wt. of (C) an acid-modified polyolefin-based resin. Property (1): The average particle diameter measured by a laser diffraction method is 1 to 3 μm. Property (2): The pore volume measured by an Nadsorption method is 0.1 to 0.5 ml/g. Property (3): The oil absorption measured according to JIS K5101 is 50 to 150 ml/100 g. Property (4): The specific surface area measured by a BET method is 100 to 200 m/g.SELECTED DRAWING: None |
