POLYPROPYLENE RESIN COMPOSITION FOR FOAMING INJECTION MOLDING AND A FOAM PREPARED USING THE SAME

摘要

PURPOSE: A polypropylene resin composition for foaming injection molding is provided to control foamed cell density by including a propylene-based mixed phase resin having a wide molecular weight distribution, to improve flexural strength and flexural modulus, and to obtain moldability suitable for injection. CONSTITUTION: A polypropylene resin composition includes 0.1-10 parts by weight of a foaming agent based on 100.0 parts by weight of a propylene-based mixed phase resin having a melt index of 3~50 g/10 minute and a distribution of molecular weight(PI) more than 7. The propylene-based mixed phase resin is polymerized under the presence of a catalyst which is manufactured by reacting a titanium compound with a succinate-based internal electron donor.