Abstract: The present invention relates to coated particles in which vegetable wax is provided on the surface of starch particles. The coated particles have an average particle diameter d1 of 0.5 to 20 ?m and a maximum particle diameter d2 being less than 30 ?m and less than 4.0 times the average particle diameter d1. The vegetable wax is contained in an amount of 0.5 to 10.0 wt % in the coated particles. Accordingly, particles having excellent feel characteristics and water repellency can be achieved with a natural material having excellent biodegradability. A method for producing coated particles includes: a step of preparing a dispersion that contains 1 to 20 wt % of starch particles; a step of adding vegetable wax to the dispersion and heating and cooling the mixture to precipitate the vegetable wax on the surface of the starch particles; and a step of subjecting this dispersion to solid-liquid separation to obtain coated particles as a solid.

Abstract: The present invention relates to coated particles in which vegetable wax is provided on the surface of starch particles. The coated particles have an average particle diameter d1 of 0.5 to 20 ?m and a maximum particle diameter d2 being less than 30 ?m and less than 4.0 times the average particle diameter d1. The vegetable wax is contained in an amount of 0.5 to 10.0 wt % in the coated particles. Accordingly, particles having excellent feel characteristics and water repellency can be achieved with a natural material having excellent biodegradability. A method for producing coated particles includes: a step of preparing a dispersion that contains 1 to 20 wt % of starch particles; a step of adding vegetable wax to the dispersion and heating and cooling the mixture to precipitate the vegetable wax on the surface of the starch particles; and a step of subjecting this dispersion to solid-liquid separation to obtain coated particles as a solid.

Abstract: The porous-cellulose particles according to the present invention are constituted by gathered crystalline celluloses having a type I crystal form including a glucose molecule as a constitutional unit. That is, porous-cellulose particles having high sphericity have been achieved from a natural raw material. The porous-cellulose particles have an average particle diameter of 0.5 to less than 50 ?m, a specific surface area of 50 to 1000 m2/g, and a sphericity of 0.85 or more. Cosmetic products containing such porous-cellulose particles have excellent texture properties.

Abstract: There is provided a spherical organic-inorganic composite particle having good biodegradability. The organic-inorganic composite particle according to the present invention includes 1 to 79% by weight of a silica component and 21 to 99% by weight of a biodegradable plastic. The organic-inorganic composite particle has an average particle diameter d1 of 0.5 to 25 ?m, a true density of 1.03 to 2.00 g/cm3, and a sphericity of 0.80 or more. A cosmetic product including the organic-inorganic composite particle having such properties has excellent texture properties.

Abstract: The porous-cellulose particles according to the present invention are constituted by gathered crystalline celluloses having a type I crystal form including a glucose molecule as a constitutional unit. That is, porous-cellulose particles having high sphericity have been achieved from a natural raw material. The porous-cellulose particles have an average particle diameter of 0.5 to less than 50 ?m, a specific surface area of 50 to 1000 m2/g, and a sphericity of 0.85 or more. Cosmetic products containing such porous-cellulose particles have excellent texture properties.

Abstract: The hollow particles according to the present invention has a balloon structure which includes a cavity inside a shell, and include convex portions with a size of 3 to 100 nm on the surface. The particles have a true specific gravity of 0.3 to 3.0 g/cm3, a specific surface area (m2/cm3) per unit volume calculated by a BET method of not less than 0.5 and less than 60, and an average particle diameter (d1) of 1 to 20 ?m. Cosmetics containing such hollow particles have a soft texture property similar to plastic beads.

Abstract: There is provided a spherical organic-inorganic composite particle having good biodegradability. The organic-inorganic composite particle according to the present invention includes 1 to 79% by weight of a silica component and 21 to 99% by weight of a biodegradable plastic. The organic-inorganic composite particle has an average particle diameter d1 of 0.5 to 25 ?m, a true density of 1.03 to 2.00 g/cm3, and a sphericity of 0.80 or more. A cosmetic product including the organic-inorganic composite particle having such properties has excellent texture properties.

Abstract: The hollow particles according to the present invention has a balloon structure which includes a cavity inside a shell, and include convex portions with a size of 3 to 100 nm on the surface. The particles have a true specific gravity of 0.3 to 3.0 g/cm3, a specific surface area (m2/cm3) per unit volume calculated by a BET method of not less than 0.5 and less than 60, and an average particle diameter (d1) of 1 to 20 ?m. Cosmetics containing such hollow particles have a soft texture property similar to plastic beads.

Abstract: The present invention provides organic-inorganic composite particles having a suitable biodegradability. The organic-inorganic composite particles of the present invention include a silica component and a biodegradable plastic. The organic-inorganic composite particles have a mean particle diameter (d1) ranging from 0.5 ?m to 25 ?m, an absolute specific gravity greater than 1.0 g/cm3 and equal to or smaller than 2.0 g/cm3, and a contact angle with water of 90° or less. A cosmetic product including the organic-inorganic composite particles has good texture characteristics.

Abstract: The present invention provides organic-inorganic composite particles having a suitable biodegradability. The organic-inorganic composite particles of the present invention include a silica component and a biodegradable plastic. The organic-inorganic composite particles have a mean particle diameter (d1) ranging from 0.5 ?m to 25 ?m, an absolute specific gravity greater than 1.0 g/cm3 and equal to or smaller than 2.0 g/cm3, and a contact angle with water of 90° or less. A cosmetic product including the organic-inorganic composite particles has good texture characteristics.