Polypropylene-based resin composition, process for producing the same and injection molded article

摘要

A polypropylene-based resin composition comprising 0.5 to 10% by weight of a propylene-based polymer component (A1) obtained by polymerizing a monomer mainly composed of propylene, having an intrinsic viscosity [eta]<A1 >measured in tetralin at 135° C. of 5 dl/g or more and a melting peak temperature Tm<A1 >measured by a differential scanning calorimeter of 130 to 160° C., 90 to 99.5% by weight of a propylene-based polymer component (A2) obtained by polymerizing a monomer mainly composed of propylene, intrinsic viscosity [eta]<2 >measured in tetralin at 135° C. of less than 5 dl/g.