Patent ID: 11873392
Assignee: PRIME POLYMER CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A polypropylene-based resin composition comprising
5 to 47 parts by mass of a propylene-based polymer (A) containing a decane-soluble part (a1) and a decane-insoluble part (a2) and having a melt flow rate measured at 230° C. and a load of 2.16 kg of 50 to 150 g/10 min and an amount of the decane-soluble part (a1) of 6 to 15% by mass, the propylene-based polymer (A) being a block copolymer obtained from propylene and ethylene, the decane-soluble part (a1) being an ethylene-propylene copolymer component and the decane-insoluble part (a2) being a propylene homopolymer component,
20 to 30 parts by mass of a propylene homopolymer (B) having a melt flow rate measured at 230° C. and a load of 2.16 kg of 10 to 500 g/10 min,
23 to 30 parts by mass of an ethylene-α-olefin copolymer (C) which is a random copolymer composed of ethylene and an α-olefin having 4 to 8 carbon atoms, and has a density of 0.850 to 0.890 g/cm3 and a melt flow rate measured at 230° C. and a load of 2.16 kg of 0.5 to 30 g/10 min, and
30 to 40 parts by mass of an inorganic filler (D) having an average particle size of over 3.0 μm and 4.8 μm or less, and an aspect ratio of 6.7 or more and less than 15,
wherein, the total amount of the components (A) to (D) is 100 parts by mass.