| 摘要 |
PROBLEM TO BE SOLVED: To provide an olefinic thermoplastic elastomer comprising a composition which contains a polypropylene-based resin and an olefinic copolymer rubber, excellent in molding processability, transferability in embossing, and mechanical strength, and further capable of giving a molded product in which failures in appearance, such as uneven luster, weld-marks and flow-marks, are prevented from generating, even if the product is poor in wall thickness uniformity. SOLUTION: This olefinic thermoplastic elastomer comprises the composition containing (A) a polypropylene-based resin component and (B) an olefinic copolymer rubber component, and further having an N1/SS ratio of 0.6-1.4 which is measured by a transient response test, wherein SS is a shear stress and N1 is a first normal stress difference when a shearing rate of 25.1 s-1 is applied to the composition at 200 deg.C. |
