POLYPROPYLENE RESIN COMPOSITION AND INJECTION MOLDED ARTICLE MADE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a polypropylene resin composition having excellent impact resistance at normal temperature and low temperature, transparency and ductility and having high crystallization rate to shorten the molding cycle and improve the productivity in the case of forming a molded article and provide its injection molded article. SOLUTION: The polypropylene resin composition contains 100 pts.wt. of a resin mixture containing 50-85 wt.% propylene-ethylene random copolymer having an ethylene content of 2-5 wt.% and a melt flow rate of 2-90 g/10 min, 5-20 wt.% low density polyethylene copolymer copolymerized by using a Ziegler-Natta catalyst and having a density of 0.85-0.91 g/cm3and a melt flow rate of 0.5-30 g/10 min and 10-30 wt.% propylene homopolymer having a melt flow rate of 2-90 g/10 min, and 0.01-2 pts.wt. of a nucleation agent. The invention further provides an injection molded article of the resin composition. COPYRIGHT: (C)2007,JPO&INPIT