Patent ID: 6096814
Filing Date: 2000-08-01
Classification: C08J,C08K,C08L,Y10T

Abstract:
A flexible polypropylene resin composition comprising 100 parts by weight of a flexible polypropylene resin having (a) peak melting temperature (Tm) of 150.degree. C. or above as measured through differential scanning calorimetry (DSC) and (b) a tensile modulus of elasticity of from 200 to 700 MPa, from 0.05 to 5 parts by weight of a hindered amine light stabilizer, and from 0.05 to 5 parts by weight of a benzotriazole ultraviolet absorbent relative to 100 parts by weight of the flexible polypropylene resin,wherein the flexible polypropylene resin comprises (A) from 20 to 100% by weight of a propylene homopolymer having (c) a pentad fraction, rrrr/(1-mmmm).times.100, as measured through isotopic carbon nuclear magnetic resonance spectrometry (.sup.13 C-NMR) of from 20 to 60%, and (d) a melting enthalpy (.DELTA.H) as measured through differential scanning calorimetry (DSC) of from 10 to 100 J/g, and/or a propylene copolymer containing at most 4% by weight of other olefin units and having the physical data of (c) and (d), and (B) from 0 to 80% by weight of a propylene copolymer containing from 10 to 80% by weight of non-propylene olefin units,and wherein the benzotriazole ultraviolet absorbent is a compound having a molecular weight of not smaller than 400.