POLYPROPYLENE RESIN COMPOSITION WITH IMPROVED FLOW-MARK INHIBITION

摘要

PURPOSE: A polypropylene resin composition is provided to secure the mold ability during an extruding process, and to improve the shock resistance and the rigidity of the resin composition for applying the composition for an interior and exterior decorative material of a vehicle. CONSTITUTION: A polypropylene resin composition contains 45~90wt% of propylene-based block copolymer, 5~30wt% of ethylene/alpha-olefin random copolymer elastomor, and 5~25wt% of inorganic filler. The melting index of the polypropylene resin composition is 40~150 g/10 minutes. The propylene-based block copolymer is formed with a propylene homopolymer part, and a propylene-ethylene random copolymerization part.