A method for producing silica-coated spherical silicone elastomer particles which includes a step in which a tetraalkoxysilane (E) is added to a liquid comprising spherical silicone elastomer particles (A), an alkaline substance (B), one or more ingredients (C) selected from among cationic surfactants and cationic water-soluble polymers, and water (D), and the tetraalkoxysilane is hydrolyzed and condensed to thereby coat the surfaces of the spherical silicone elastomer particles with silica.

The present invention relates to a composition comprising at least one polymer, the polymer being present in the form of polymer particles and the composition contains at least one water-soluble agent, wherein the water-soluble agent has a proportion of at most 1 wt. % to the composition. The present invention further relates to a method for producing the claimed composition according to the invention and to the use thereof.

Rubber pellets are coated with an anti-tack material. The anti-tack material may be comprised of a metallic stearate, such as magnesium stearate. The coated rubber pellets are loaded on to a rotational conveyance mechanism that rotates at a speed and radial amount to provide an interaction time between the rubber pellets and the anti-tack material. The coated rubber pellets may then be dried in a centrifuge dryer having a plurality of angled fins extending from a rotational shaft.

A superabsorbent polymer includes polymer particles, surface cross-linking agents and particles made of silicon-containing inorganic salt. The polymer particles have cross-linking inside the polymer particles. The surface cross-linking agents are covalently bound to the surface of the polymer particles so as to constitute a surface cross-linked region at the surface of each said resin particle, and the particles made of silicon-containing inorganic salt cover the surface of the polymer particles.

Provided is a composite body where ceramic crystals are thinly and uniformly coated onto a base material containing a hydrophilic polymer. The composite body has a base material containing a hydrophilic polymer, and a ceramic layer which is coated onto at least a portion of a surface of the base material, and the ceramic layer contains crystals having a laminated structure. The ceramic layer may contain calcium phosphate. A thickness of the ceramic layer is 0.3 nm to 50 nm. The composite body is produced through a step of mixing and stirring a dispersion liquid in which the base material is dispersed, a first solution containing calcium ions, and a second solution containing phosphate ions.

An object of the present invention is to produce composite resin particles in which the original physical properties of PTFE derived from fine powder are maintained, and the present invention provides a method for producing composite resin particles, wherein the method includes: a first step in which fine powder containing polytetrafluoroethylene obtained by emulsion polymerization is pulverized in the presence of a ketone-based solvent; a second step in which the pulverized fine powder and a carbon nanomaterial are dispersed in the ketone-based solvent to produce a composite resin particles dispersion; a third step in which the composite resin particles are produced by removing the ketone-based solvent from the composite resin particle dispersion; and wherein the fine powder is pulverized so as to have an average particle diameter of 50 m or less, and a temperature of the ketone-based solvent used in the first step is set to 20 C. or less.

A composition is provided that comprises at least the following: polymer particles comprising a coating on at least a portion of the total surface of the polymer particles, and wherein the coating is formed from a powder composition comprising at least one inorganic powder, and at least one organic powder selected from a metal stearate and/or a polymer powder, and wherein the weight ratio of the total amount of the inorganic powder to the total amount of the organic powder is from 3.0 to 50.0.

Rubber pellets are coated with an anti-tack material. The anti-tack material may be comprised of a metallic stearate, such as magnesium stearate. The coated rubber pellets are loaded on to a rotational conveyance mechanism that rotates at a speed and radial amount to provide an interaction time between the rubber pellets and the anti-tack material. The coated rubber pellets may then be dried in a centrifuge dryer having a plurality of angled fins extending from a rotational shaft.

A polymer matrix composite containing graphene sheets homogeneously dispersed in a polymer matrix wherein the polymer matrix composite exhibits a percolation threshold from 0.0001% to 0.1% by volume of graphene sheets to form a 3D network of interconnected graphene sheets or network of electron-conducting pathways.

A polymer powder having a surface energy of less than 35 mN/m is suitable for melting/sintering powder particles for layer-by-layer production of three-dimensional objects.