| 摘要 |
A modified polypropylene-based polymer obtained by graft modification of a propylene/alpha-olefin copolymer with a xylene-soluble portion of at least 40 mass % and no greater than 85 mass %, a xylene-soluble portion (XS) intrinsic viscosity (XSIV) of at least 2.5 dl/g, and an MFR value of no greater than 3.0 g/10 min at 230° C. under a load of 2.16 kg, using an unsaturated carboxylic acid or its derivative, and a flame retardant polyolefin-based resin composition having prescribed contents of a polyolefin-based resin component comprising 60-95 mass % of a polyolefin-based resin and 40-5 mass % of a modified polypropylene-based polymer, and an inorganic flame retardant component comprising an inorganic filler. The polymer has excellent flexibility and heat resistance as well as affinity and high adhesive strength at interfaces with base materials or fillers, and can be used as an adhesive or packaging material, or as a compatibilizer to bring out the excellent physical properties of heterogeneous materials, such as tensile elongation and abrasion resistance.
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