Abstract: A masterbatch composition made from or containing: 65 to 85 wt % of a propylene homopolymer or copolymer as component (1) containing 0 to 3 wt % of ethylene or one or more C4-C10-?-olefin-derived units; and 15 to 35 wt % of a propylene-ethylene copolymer as component (2) containing 25 to 35 wt % of ethylene-derived units, wherein the masterbatch composition has: 1) a melt flow rate (230° C., load: 21.18 N) of 5 to 30 g/10 minutes; 2) xylene insolubles with an Mw of 10×104 to 30×104 and an Mw/Mn of 6 to 20 as measured by GPC; and 3) xylene solubles with an intrinsic viscosity of 5.5 to 9.0 dl/g.

Abstract: A masterbatch composition made from or containing: 65 to 85 wt % of a propylene homopolymer or copolymer as component (1) containing 0 to 3 wt % of ethylene or one or more C4-C10-?-olefin-derived units; and 15 to 35 wt % of a propylene-ethylene copolymer as component (2) containing 25 to 35 wt % of ethylene-derived units, wherein the masterbatch composition has: 1) a melt flow rate (230° C., load: 21.18 N) of 5 to 30 g/10 minutes; 2) xylene insolubles with an Mw of 10×104 to 30×104 and an Mw/Mn of 6 to 20 as measured by GPC; and 3) xylene solubles with an intrinsic viscosity of 5.5 to 9.0 dl/g.

Abstract: A modified polypropylene-based polymer obtained by graft modification of a propylene/?-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.

Abstract: The flame retardant of the present invention has a flame retardant (a) component, comprising 50 to 97% by mass of a metal hydrate (a-1) component and 3 to 50% by mass of a filler (a-2) component, wherein the filler (a-2) component contains SiO2, Al2O3 and M2/nO. Here, the total of the metal hydrate (a-1) component and the filler (a-2) component is 100% mass, M represents one or more metal elements selected from a group consisting of K, Na, Mg, Ca, Fe and Zn, and n represents a valence of the metal element. According to the present invention, it is possible to provide a flame retardant capable of providing a molded article and an electric wire with a coating, which are excellent in flame retardancy, abrasion resistance and flexibility, and also have sufficient mechanical strength at low cost.

Abstract: A flame-retardant polyolefin resin composition was provided excellent in flame retardance, abrasion resistance, flexibility, low-temperature characteristics, mechanical characteristics such as tensile strength and elongation at break, and heat resistance. The flame-retardant polyolefin resin composition of the present invention comprising 100 parts by weight of a polyolefin (A) and 50 to 400 parts by weight of an inorganic flame retarding agent (B), wherein the polyolefin resin composition (A) comprises 30 to 94% by weight of a polypropylene resin (A-1), 1 to 30% by weight of a low-density polyethylene (A-2) in which the number of terminal vinyl groups per 1000 carbon atoms is 0.2 or more, and 5 to 40% by weight of a modified styrene thermoplastic elastomer (A-3) that possesses 0.4% by weight or more of a carboxylic acid group or an acid anhydride group.

Abstract: A flame-retardant thermoplastic resin composition, comprising a thermoplastic resin (a) and an inorganic flame-retarder (b), the content of the component (b) being 50 to 250 parts by mass with respect to 100 parts by mass of the component (a), wherein the component (a) includes at least one selected from the group consisting of an ?-olefin (co)polymer (a-1), a thermoplastic elastomer (a-2) and a rubber (a-3); the component (a) (100% by mass) includes 0.01 to 0.5% by mass of a constituent unit derived from an unsaturated monomer having a carboxylic acid group or acid anhydride group; the component (b) includes 40 to 95% by mass of inorganic metal hydrate (b-1) and 5 to 60% by mass of inorganic filler (b-2); and the average particle diameter of the inorganic filler (b-2) is not more than 2 ?m and the aspect ratio of the inorganic filler (b-2) is not more than 1.5.

Abstract: The flame retardant of the present invention has a flame retardant (a) component, comprising 50 to 97% by mass of a metal hydrate (a-1) component and 3 to 50% by mass of a filler (a-2) component, wherein the filler (a-2) component contains SiO2, Al2O3 and M2/nO. Here, the total of the metal hydrate (a-1) component and the filler (a-2) component is 100% mass, M represents one or more metal elements selected from a group consisting of K, Na, Mg, Ca, Fe and Zn, and n represents a valence of the metal element. According to the present invention, it is possible to provide a flame retardant capable of providing a molded article and an electric wire with a coating, which are excellent in flame retardancy, abrasion resistance and flexibility, and also have sufficient mechanical strength at low cost.

Abstract: A flame-retardant thermoplastic resin composition, comprising a thermoplastic resin (a) and an inorganic flame-retarder (b), the content of the component (b) being 50 to 250 parts by mass with respect to 100 parts by mass of the component (a), wherein the component (a) includes at least one selected from the group consisting of an ?-olefin (co)polymer (a-1), a thermoplastic elastomer (a-2) and a rubber (a-3); the component (a) (100% by mass) includes 0.01 to 0.5% by mass of a constituent unit derived from an unsaturated monomer having a carboxylic acid group or acid anhydride group; the component (b) includes 40 to 95% by mass of inorganic metal hydrate (b-1) and 5 to 60% by mass of inorganic filler (b-2); and the average particle diameter of the inorganic filler (b-2) is not more than 2 ?m and the aspect ratio of the inorganic filler (b-2) is not more than 1.5.

Abstract: A modified polypropylene-based polymer obtained by graft modification of a propylene/?-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.

Abstract: A flame-retardant polyolefin resin composition was provided excellent in flame retardance, abrasion resistance, flexibility, low-temperature characteristics, mechanical characteristics such as tensile strength and elongation at break, and heat resistance. The flame-retardant polyolefin resin composition of the present invention comprising 100 parts by weight of a polyolefin (A) and 50 to 400 parts by weight of an inorganic flame retarding agent (B), wherein the polyolefin resin composition (A) comprises 30 to 94% by weight of a polypropylene resin (A-1), 1 to 30% by weight of a low-density polyethylene (A-2) in which the number of terminal vinyl groups per 1000 carbon atoms is 0.2 or more, and 5 to 40% by weight of a modified styrene thermoplastic elastomer (A-3) that possesses 0.4% by weight or more of a carboxylic acid group or an acid anhydride group.