The present invention provides a fine silicon powder and the like including fine silicon particles having a microscopically measured particle diameter of 1 μm or more and an average circularity determined in accordance with Formula (1) of 0.93 or more, in which an average particle diameter based on volume, which is measured by a laser diffraction scattering method, is in a range of 0.8 μm or more and 8.0 μm or less, an average particle diameter based on number, which is measured by the laser diffraction scattering method, is in a range of 0.100 μm or more and 0.150 μm or less, and a specific surface area, which is measured by a BET method, is in a range of 4.0 m.sup.2/g or more and 10 m.sup.2/g or less. Circularity=(4×π×projected area of particle).sup.1/2/peripheral length of particle (1).

The sodium ferrite particle powder according to the present invention is characterized in that at least one metal or more selected from the metal group consisting of silicon, aluminum, titanium, manganese, cobalt, nickel, magnesium, copper and zinc is contained in an amount of 0.05 to 20% by weight in terms of the oxide, and the molar ratio of Na/Fe is 0.75 to 1.25.

A cleaning sachet for removing carbon deposit and rust on a gun element, and a cleaning method thereof, uses cleaning powder that includes aluminum oxide making up 75.000% to 99.989% by weight of the cleaning powder, zinc peroxide making up 0.010% to 9.000% by weight of the cleaning powder, and nano zinc oxide making up 0.001% to 6.000% by weight of the cleaning powder. A user can lay the cleaning sachet on a carbon-deposited and/or rusting area of the gun element before or after moistening the cleaning sachet with a lubricating oil, and then wipe the carbon-deposited and/or rusting area with the cleaning sachet after waiting a period of time. Therefore, the colloidal solution formed by mixing the lubricating oil and the cleaning powder and released out of the cleaning sachet can remove the carbon deposit and/or rust on the surface of the gun element.

A zinc oxide nanocomposition is modified with a homobifunctional imidoester compound and an antibiotic composition contains the zinc oxide nanocomposition as an active ingredient. Also, a combination preparation contains the zinc oxide nanocomposite and an antifungal agent. The zinc oxide nanocomposite provides an antibiotic composition which is less toxic while exhibiting excellent antibiotic activity, for example, antiviral, antibacterial or antifungal activity. The antibiotic composition is usable to prevent contamination or infection by viruses, bacteria or fungi, inhibit the growth of viruses, bacteria or fungi, or treat infections by viruses, bacteria or fungi.

A talc particulate, a polymer composition comprising said talc particulate, methods of making said talc particulate and said polymer composition, and the various uses of said talc particulate.

The present invention relates to a positive electrode active material, wherein the positive electrode active material is a lithium transition metal oxide including a first doping element (A) and a second doping element (B), wherein the first doping element is one or more selected from the group consisting of Zr, La, Ce, Nb, Gd, Y, Sc, Ge, Ba, Sn, Sr, Cr, Mg, Sb, Bi, Zn, and Yb, the second doping element is one or more selected from the group consisting of Al, Ta, Mn, Se, Be, As, Mo, V, W, Si, and Co, and a weight ratio (A/B ratio) of the first doping element to the second doping element is 0.5 to 5.

An anode material having 0.8≤0.06×(Dv50).sup.2−2.5×Dv50+Dv99≤12 (1); and 1.2≤0.2×Dv50−0.006×(Dv50).sup.2+BET≤5 (2), where Dv50 represents a value in the volume-based particle size distribution of the anode material that is greater than the particle size of 50% of the particles, Dv99 represents a value in the volume-based particle size distribution of the anode material that is greater than the particle size of 99% of the particles, and BET is a specific surface area of the anode material, wherein Dv50 and Dv99 are expressed in μm and BET is expressed in m.sup.2/g. The anode material is capable of significantly improving the rate performance of electrochemical devices.

The present invention relates to a lithium metal composite oxide with a layered structure wherein: at least Li, Ni, and an element X are included; the element X is at least one element selected from the group consisting of Co, Mn, Mg, Ca, Sr, Ba, Zn, B, Al, Ga, Ti, Zr, Ge, Fe, Cu, Cr, V, W, Mo, Sc, Y, Nb, La, Ta, Tc, Ru, Rh, Pd, Ag, Cd, In, and Sn; and an average three-dimensional particle unevenness of primary particles with an equivalent spherical diameter of at least 1.0 μm is at least 1.91 and less than 2.9.

Process for making a particulate lithiated transition metal oxide comprising the steps of: (a) Providing a particulate transition metal precursor comprising Ni, (b) mixing said precursor with at least one compound of lithium and at least one processing additive selected from NaCl, KCl, CuCl.sub.2, B.sub.2O.sub.3, MoO.sub.3, Bi.sub.2O.sub.3, Na.sub.2SO.sub.4, and K.sub.2SO.sub.4 in an amount of from 0.1 to 5% by weight, referring to the entire mixture obtained in step (b), (c) thermally treating the mixture obtained according to step (b) in at least two steps, (c1) at 300 to 500° C. under an atmosphere that may comprise oxygen, (c2) at 650 to 850° C. under an atmosphere of oxygen.

A composition formed from a calcium or magnesium carbonate-including material and a surface-treatment composition including at least one cross-linkable compound, a dry process for the preparation of such a composition, a curable elastomer mixture comprising an elastomer resin and the composition, a cured elastomer product formed from the curable elastomer mixture, a process for preparing the cured elastomer product, the use of at least one cross-linkable compound including at least two functional groups, wherein at least one functional group is suitable for cross-linking an elastomer resin and wherein at least one functional group is suitable for reacting with the calcium or magnesium carbonate-including material in the compounding of an elastomer formed from an elastomer resin and at least one calcium or magnesium carbonate-comprising material as filler as well as an article formed from the cured elastomer product.