| 摘要 |
PURPOSE:To obtain a composite material suitable for parts of automobile, having excellent dimensional stability, flame retardance and coating performance free from reduction in impact resistance and tensile elongation by blending a specific non-rigid polypropylene with a specific amount of filler. CONSTITUTION:(A) 97-30 pst.wt. non-rigid polypropylene consisting of A1: a polypropylene-based polymer comprising 10-90wt.% boiling heptane-soluble polypropylene having >=1.2dl/g intrinsic viscosity and 90-10wt.% boiling-heptane- insoluble polypropylene having 0.5-9dl/g intrinsic viscosity and A2: a random copolymer of propylene and 4-30C alpha-olefin having 0.1-5mol% alpha-olefin unit content, >=1.2dl/g intrinsic viscosity and 20-99.9wt.% boiling-hexane-soluble content is blended with (B) 3-70 pts.wt. inorganic or organic filler. |
