PROPYLENE COMPOSITION, PROCESS FOR PREPARING THE SAME, POLYPROPYLENE COMPOSITION, AND MOLDED ARTICLES

摘要

A polypropylene composition for preparing various molded articles having well-balanced properties among moldability, molding shrinkage, rigidity, flexibility, impact resistance particularly at low temperatures, transparency, gloss and blushing resistance; various molded articles possessing the above properties; a propylene composition suitable as a base resin for the polypropylene composition; and a process for preparing the same. The propylene composition is characterized by comprising a homopolymer of propylene and a propylene/ethylene copolymer, the intrinsic viscosity ([ eta ]RC) of the copolymer being in the range of from 1.7 to 2.8 dl/g, the intrinsic viscosity ratio ([ eta ]RC/[ eta ]PP) of the homopolymer to the copolymer being in the range of from 0.7 to 1.2, and the product of the homopolymer to copolymer weight ratio (WPP/WRC) and the intrinsic viscosity ratio thereof, (WPP/WRC)x([ eta ]RC/[ eta ]PP), being in the range of from 1.0 to 3.0.