Abstract: Polypropylene resin compositions are suited for injection molding and are capable of giving molded articles having excellent mechanical properties, reduced tendency to cause flow marks or weld marks, low gloss, and superior scratch resistance. A polypropylene resin composition includes: an amount of a resin composition (F) including a polypropylene (A), an ethylene-?-olef in copolymer or an ethylene-?-olefin-diene copolymer (B-I) having MFR of less than 0.4 g/10 min, an ethylene-?-olefin copolymer (B-2) having MFR of 0.5 to less than 20 g/10 min, and an inorganic filler (C); and specific amounts relative to the resin composition (F) of a modified polypropylene (D) and a surface modifier (E).

Abstract: A polypropylene composite that includes 50 to 75 weight percent of polypropylene resin based on the weight of the polypropylene composite. The polypropylene resin has a melt flow rate of from 20 to 300 at 230° centigrade under a 2.16 kilogram load. The polypropylene composite also includes from 5 to 15 weight percent based on the weight of the polypropylene composite of ethylene-alpha-olefin diene copolymer rubber. The ethylene-alpha-olefin diene copolymer rubber has a melt flow rate of less than 0.4 at 230° centigrade under a 2.16 kilogram load. Also included is from 5 to 15 weight percent of an ethylene-alpha-octene copolymer rubber having a melt flow rate of from 0.5 to 20 at 230° centigrade under a 2.16 kilogram load Also a ratio of ethylene-alpha-olefin diene copolymer rubber divided by a total content of ethylene-alpha-olefin diene copolymer rubber and ethylene-alpha-octene copolymer rubber is 0.35-0.45.

Abstract: A compound is described including one or more polymer (A) selected from propylene-ethylene block copolymers (A1), propylene homopolymers (A2) and a combination of copolymers (A1) and/or homopolymers (A2), at 30% to 90% by weight; one or more copolymer (B) selected from ethylene-alpha-olefin random copolymers (B1), hydrogenated styrene-ethylene-butadiene-styrene block copolymers (B2), ethylene-alpha-olefin block copolymers (B3), and a combination of two or more of copolymers (B1), copolymers (B2), and/or optional copolymers (B3), at 0% to 50% by weight; one or more mineral filler (C) at 0% to 30% by weight; one or more surface modifier (D) at 0% to 5% by weight; one or more additive (E) at 0% to 5% by weight; and one or more colorant (F) at 0% to 10% by weight. Associated articles and methods are also described.

Abstract: A compound is described including one or more polymer (A) selected from propylene-ethylene block copolymers (A1), propylene homopolymers (A2) and a combination of copolymers (A1) and/or homopolymers (A2), at 30% to 90% by weight; one or more copolymer (B) selected from ethylene-alpha-olefin random copolymers (B1), hydrogenated styrene-ethylene-butadiene-styrene block copolymers (B2) and a combination of two or more of copolymers (B1) and/or copolymers (B2), at 0% to 50% by weight; one or more mineral filler (C) at 0% to 30% by weight; one or more surface modifier (D) at 0% to 5% by weight; one or more additive (E) at 0% to 5% by weight; and one or more colorant (F) at 0% to 10% by weight. Associated articles and methods are also described.

Abstract: The present invention relates to methods for preparing polymetallic precursors and for preparing improved nanocomposites formed from such precursors which are useful in fuel cell catalyst compositions. The nanocomposites include a support and a plurality of polymetallic nanoparticles with a selected metal atomic ratio. The metals in the polymetallic precursors have a stoichiometric ratio which is approximately equal to the selected atomic ratio of metals in the nanoparticles such that stoichiometric control is provided for the resulting nanocomposite catalyst. Crystalline intermetallic or metal alloy nanoparticles form when a polymetallic precursor having a particular metal stoichiometry is contacted with a conductive support, and the precursor is thermally degraded on the support leading to retention of the metal core of the precursor on the support.