Magnesium hydroxide having low glossiness and acid resistance which is required for coatability. The magnesium hydroxide is coated magnesium hydroxide comprising magnesium hydroxide and colloidal silica coating the surface thereof, wherein (A) the coating amount of colloidal silica is 0.1 to 20.0 wt % in terms of SiO.sub.2 based on 100 wt % of magnesium hydroxide; and (B) the coated magnesium hydroxide has a long diameter (width) of 0.5 to 20 μm, a thickness of 0.01 to 0.5 μm and an aspect ratio of not less than 10.

Core particles produced in situ or introduced as preformed core particles are coated with a layer of carbon. Non-carbon as well as some carbon-based core materials can be utilized. The resulting carbon coated particles can find applications in rubber products, for instance as reinforcement for tire components.

The present invention relates to a surface-reacted magnesium carbonate, a delivery system for the release of one or more active agent(s) in a home care formulation comprising the surface-reacted magnesium carbonate, a home care formulation comprising the delivery system for the release of one or more active agent(s), a method for preparing the surface-reacted magnesium carbonate and a method for preparing the delivery system for the release of one or more active agent(s) in a home care formulation, as well as the use of the surface-reacted magnesium carbonate as a carrier material for the release of one or more active agent(s) in a home care formulation and the use of the delivery system for the release of one or more active agent(s) in a home care formulation.

The present invention relates to a particulate highly porous amorphous mesoporous magnesium carbonate material suitable for uptake of high amounts of oily substances, sebum or a beneficial agent or combinations of these and to topical and cosmetic compositions comprising such material. The particulate highly porous amorphous mesoporous magnesium carbonate material according to the invention has a total pore volume larger than 0.1 cm 3/g and is constituted of particles having a peak particle size at or below 35 μm.

Provided is a novel magnesium carbonate. The magnesium carbonate has a zeta potential of 5 mV or more and a BET specific surface area of 25 m.sup.2/g or more. Such a magnesium carbonate can be used as a resin additive, etc.

A method of manufacturing colored chalk. The method for manufacturing colored chalk includes preparing a colorant, combining the colorant with a volume of water, adding magnesium carbonate to the combination of water and colorant until a paste is formed, mixing the paste until the paste is homogenous, heating the paste in a kiln until the water is removed, and grinding a mass of colored magnesium carbonate into a powder having a desired fineness. In some embodiments, the colorant includes iron oxide, charcoal, or Camellia sinensis leaves.

A composition comprising titanium dioxide and additives useful for enhancing the optical performance of titanium dioxide or for allowing substitution of at least part of the titanium dioxide in said composition for additives. At least two additives are added, wherein a first additive comprises a composite pigment and a second additive comprises a reactive polymer. The invention also provides a method for enhancing the optical properties of titanium dioxide compositions.

A thermally conductive additive is excellent in thermal conductivity improvement effect and has high processability, and a thermally conductive composite material and a wire harness each contain such a thermally conductive additive. The thermally conductive additive includes an organic component and a metal-containing component, where the organic component is configured as an organic compound including a coordination part that can multidentate-coordinate to a metal, and at least one functional group bonded to the coordination part and having a conjugated π-electron system, and the organic component coordinates in the coordination part to a metal atom constituting the metal-containing component to form a coordination complex. The thermally conductive composite material includes the thermally conductive additive and a matrix material, where the thermally conductive additive is dispersed in the matrix material. The wire harness includes the thermally conductive composite material.

The present invention relates to hydrophobic additives comprising a mixture of one or more inorganic carrier particles, and one or more salts of one or more carboxylic acids or one or more carboxylic acids or in the alternative both of one or more salts of one or more carboxylic acids and one or more carboxylic acids, wherein the particle size distribution (psd) D90 of the mixture measured as powder is from 8 to 150 μm. The present invention further relates to intermediate compounds and mineral binders comprising a hydrophobic additive.

Provided is a filler that has a low viscosity when mixed in a resin material and has reduced permittivity and dielectric loss tangent. The filler includes: a metal oxide particle material; and a polyorganosiloxane compound with which a surface treatment is performed on the metal oxide particle material and which is represented by general formula (1): (RO).sub.3Si—(SiR.sub.2—O—).sub.n—SiR.sub.3 (in general formula (1), each R is independently selected from among alkyl groups having 1 to 4 carbon atoms, and n is not less than 10 and not greater than 200). A resin composition obtained by containing the filler in a resin is suitable for an electronic material.