| 摘要 |
<p>A polypropylene resin composition includes: 14 to 39 wt% of a propylene block copolymer (A-1) having MFR of 1 to 200 g/10 min, the propylene block copolymer comprising 70 to 95 wt% of a room temperature n-decane insoluble part (D insol (1)) and 5 to 30 wt% of a room temperature n-decane soluble part (D sol (1)), the D insol (1) having a mmmm fraction of not less than 97%, the D sol (1) having [·] of 4 to 10 dl/g; 20 to 60 wt% of a propylene block copolymer (A-2) having MFR of 1 to 200 g/10 min, the propylene block copolymer comprising 70 to 95 wt% of a room temperature n-decane insoluble part (D insol (2)) and 5 to 30 wt% of a room temperature n-decane soluble part (D sol (2)), the D insol (2) having a mmmm fraction of not less than 97%, the D sol (2) having [·] of 1.5 to 4 dl/g; 5 to 30 wt% of an ethylene/±-olefin copolymer rubber (B) ; and 10 to 30 wt% of an inorganic filler (C). The polypropylene resin composition can produce injection molded articles having excellent rigidity and impact resistance, less weld lines and flow marks and good appearance and are suitable for producing automobile parts.</p> |
