Patent ID: 6323286
Filing Date: 2001-11-27
Classification: C08L

Abstract:
A polypropylene composition having an excellent emboss transferring property, which comprises a propylene block copolymer component containing crystalline polypropylene segment and a propylene/.alpha.-olefin copolymer segment, and an olefin synthetic rubber component and/or a styrene synthetic rubber component, wherein the copolymer segment in the block copolymer component has an intrinsic viscosity [.eta.].sub.RC up to 6.5 dl/g, and an intrinsic viscosity ratio of this copolymer segment to the crystalline polypropylene segment [.eta.].sub.RC /[.eta.].sub.PP is 0.5-1.3, the product ([.eta.].sub.RC /[.eta.].sub.PP).times.(W.sub.PP /W.sub.RC) of this intrinsic viscosity ratio ([.eta.].sub.RC /[.eta.].sub.PP) and a weight ratio thereof W.sub.PP /W.sub.RC falls in the range of 0.2-4.5 and a ratio of a melt flow rate (230.degree. C., 21.18N) of the rubber component to a melt flow rate (230.degree. C., 21.18N) of the crystalline polypropylene segment in the block copolymer component, [MFR].sub.TR /[MFR].sub.PP, is 0.3-80.