High rigidity polypropylene resin composition with excellent flowability, heat resistance and external shape

摘要

The present invention relates to a high-rigidity polypropylene resin composition excellent in flowability and heat resistance, and having an excellent outer shape such as gloss and transparency, and ethylene-propylene in which a propylene homopolymer and an ethylene-propylene rubber polymer are polymerized in stages. It relates to a block copolymer. More specifically, in the presence of a Ziegler-Natta catalyst containing a succinate internal electron donor, the molecular weight distribution of the propylene homopolymer, the ethylene content of the ethylene-propylene block copolymer, the ethylene-propylene rubber content and the ethylene-propylene The present invention relates to a high-rigidity polypropylene resin composition excellent in flowability, heat resistance and outer shape, characterized by adjusting the intrinsic viscosity of rubber and containing an organometallic nucleating agent.