abstract |
A polypropylene composition for the production ofnvarious molded articles which are excellent in moldability,nmold shrinkage factor on molding, rigidity, flexibility,nimpact resistance, in particular low-temperature impactnresistance, transparency, gloss, stress-whiteningnresistance, and the balance thereof; various molded articlesnhaving the above properties; a propylene composition whichnis suitable for a base resin for the polypropylenencomposition; and a process for the production thereof. n The propylene composition comprises a propylenenhomopolymer and a propylene-ethylene copolymer, thenintrinsic viscosity of the copolymer ([η] RC ) is in the rangenof 1.7 to 2.8 dl/g, the intrinsic viscosity ratio of thenhomopolymer to the copolymer ([η] RC /[η] PP ) is in the range ofn0.7 to 1.2 and a product [ (W PP /W RC ) x ([η] RC /[η] PP ) ] of thenweight ratio (W PP /W RC ) of the homopolymer to the copolymernand the intrinsic viscosity ratio thereof is in the range ofn1.0 to 3.0. |