POLYPROPYLENE RESIN COMPOSITION

摘要

PURPOSE: A polypropylene resin composition is provided to have excellent rigidity and impact strength, to have excellent moldability, and to remarkably reduce flow marks. CONSTITUTION: A polypropylene resin composition comprises 45-90 wt% of a xylene-soluble part and a propylene homopolymer with a melt index of 25-100 g/10 minutes (230 °C); 5-50 wt% of a blend of two or more ethylene-alpha-olefin-based random copolymers having different inherent viscosities from each other; and 5-50 wt% of an inorganic filler. The polydispersity index of the propylene-based block copolymer is 5-12, and the stereoregularity thereof by a pentad method is 94% or more.