| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a polypropylene resin composition for injection foam molding enabling thin wall injection molding and having a high expansion ratio and, accordingly, having light weight and high impact strength, and to provide an injection foam molded article composed of the resin composition. <P>SOLUTION: The polypropylene resin composition for injection foam molding contains (A)≥50 wt.% and≤95 wt.% of a linear polypropylene resin having a melt flow rate of≥10 g/10 min and≤150 g/10 min, a melt tension of≤2 cN and a Charpy impact strength (-20°C) of≥4.5 kJ/m<SP>2</SP>and (B)≥5 wt.% and≤50 wt.% of a modified polypropylene resin having a melt flow rate of≥0.1 g/10 min and≤30 g/10 min and a melt tension of≥5 cN and exhibiting strain-hardening property. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
