| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin composition which prevents "a weld line" from occurring in injection molding of automotive interior and exterior parts such as a bumper material and a door trim material, which develops a deeper low-lightness color in comparison with a conventional color, particularly in the case of mixing a dark pigment into a material itself, while maintaining rigidity and impact resistance, and which dispenses with coating. SOLUTION: The resin composition for colored resin molding contains: 63.6-75.4 pts.mass of homopolypropylene; 24-28 pts.mass of a styrene-based elastomer containing 10-50 mass% of a styrene component and 50-90 mass% of an elastomer component and having a weight-average molecular weight of≥40,000; 0.5-8 pts.mass of a layered inorganic compound having an average particle size of 5-7μm and an aspect ratio of 250-7,000; and 0.1-0.4 pt.mass of titanium oxide. COPYRIGHT: (C)2011,JPO&INPIT |
