| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a molding with improved rigidity and impact resistance, reduced odor and excellent in injection moldability, and to provide a material moldable into an ultrathin product having minimum thickness of 0.2 mm by injection molding. <P>SOLUTION: The ethylene-propylene block copolymer has a melt flow rate at 230°C of 90-110 (g/10 min), stereoregularity of the homopolymer part of≥0.960, a p-xylene soluble fraction at 23°C of 10.0-13.0 wt.%, an ethylene content of 32-40 wt.% and intrinsic viscosity [η] in a decalin solvent of 2.7-3.3 (dL/g). The propylene resin composition comprises this. The food containers, medical containers, dishes and disc cases are obtained by injection molding the propylene resin composition. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
