A resin composition based on polypropylene, the molded article thereof undautomobilinnen - or automobile the outside material with the use of the same

摘要

It is a resin composition based on polypropylene with excellent impact strength, tensile elongation to fracture and stiffness, a molded article thereof, and an auto mobile inside - or automobile the outside material provided with the use of the same. The resin composition based on polypropylene contains 50 to 90 masses -% of a polymer based on polypropylene (a), 5 to 50 masses -% of an ethylene - α - olefin copolymer rubber (b) and 0,1 to 5 masses -% of a copolymer (c), which mainly a vinyl aromatic monomer unit and an alkylene monomer unit, wherein the content of the α - olefin monomer unit in all of the alkylene monomers 45 mol -% or more.