Thermoplastic resin composition and its injection molded article

摘要

The present invention provides a thermoplastic resin composition including specific amounts of (A) a polypropylene resin, (B) an elastomer, (C) inorganic filler, (D) a resin having a melt tension of 0.1 N or more and a swelling ratio of 1.8 or more and being characterized by that the time required for the resin until the ratio (G(t)/G(0.02)) of a relaxation modulus G(t) measured at 210° C. to a relaxation modulus G(0.02) at a time of 0.02 sec reaches 0.01 is 10 sec or more, and (E) a resin characterized by that, with respect to a swelling ratio measured at 220° C. at an L/D of an orifice of 40, the ratio of a swelling ratio (SR10³) at a shear rate of 2.4x10³ sec^-1 to a swelling ratio (SR10²) at a shear rate of 1.2x10² sec^-1, SR10³/SR10², is from 1.0 to 1.1.