Abstract: Provided is a novel glass filler having a low permittivity. The glass filler provided includes a glass composition, wherein the glass composition includes, in wt %:95?SiO2?99.5; 0?B2O3?2; 0.01?Al2O3?4; 0?R2O?4; 0.01?RO ?4; and 0?TiO2?4, where RO is at least one selected from MgO, CaO, SrO, and ZnO, and R2O is at least one selected from Li2O, Na2O, and K2O. This glass filler can have a permittivity of less than 4 at 1 GHz.

Abstract: The present disclosure provides a novel glass filler that has a low permittivity and is suitable for mass production. A glass filler provided includes a glass composition that includes, in wt %, for example, 40?SiO2?60, 25?B2O3?45, 0<Al2O3?18, 0<R2O?5, and 0?RO?12, and satisfies at least one of: i) SiO2+B2O3?80 and SiO2+B2O3+Al2O3?99.9; and ii) SiO2+B2O3?78, SiO2+B2O3+Al2O3?99.9, and 0<RO<10. Another glass filler provided includes a glass composition that includes SiO2, B2O3, Al2O3, R2O, and 3<RO<8 at the same contents as the above, and satisfies SiO2+B2O3?75 and SiO2+B2O3+Al2O3<97, where R2O=Li2O+Na2O+K2O and RO=MgO+CaO+SrO.

Abstract: A glass flake filler of the present invention is composed of glass flakes. The average thickness of the glass flakes is at least 0.1 ?m but less than 0.5 ?m, and the glass flakes include glass flakes having a thickness of at least 0.01 ?m but not more than 2.0 ?m in an amount of at least 90% by mass. A resin composition of the present invention is a resin composition including a thermoplastic resin and a glass flake filler. This glass flake filler is composed of glass flakes, the average thickness of the glass flakes is at least 0.1 ?m but less than 0.5 ?m, and the glass flakes include glass flakes having a thickness of at least 0.01 ?m but not more than 2.0 ?m in an amount of at least 90% by mass.

Abstract: The bright pigment of the present invention includes flaky particles and a metal oxide layer coating at least a part of the surface of each flaky particle. The bright pigment or the flaky particles of the present invention have a particle size distribution in which the particle size at 99% of the cumulative volume from the smaller particle size is 48 ?m or less, and the maximum particle size is 62 ?m or less. The flaky particles are made of a material having a refractive index in the range of 1.4 to 1.8. The flaky particles have a thickness distribution in which the frequency of the particles having a thickness in the range of 0.8 ?m to 1.9 ?m is 90% or more by volume, or the frequency of the particles having a thickness in the range of 0.01 ?m to 0.35 ?m is 90% or more by volume.

Abstract: The glass flakes of the present invention each include a glass flake substrate and a coating layer coating the surface of the glass flake substrate. The glass flake substrates have an average thickness of 0.1 to 1.0 ?m, and an average particle size of 1 to 100 ?m. The coating layers are formed of methyl hydrogen silicone and the content percentage of the coating layers is 0.05 to 2.50 mass % as determined by ignition loss at 625±20° C.

Abstract: The bright pigment of the present invention includes flaky particles and a metal oxide layer coating at least a part of the surface of each flaky particle. The bright pigment or the flaky particles of the present invention have a particle size distribution in which the particle size at 99% of the cumulative volume from the smaller particle size is 48 ?m or less, and the maximum particle size is 62 ?m or less. The flaky particles are made of a material having a refractive index in the range of 1.4 to 1.8. The flaky particles have a thickness distribution in which the frequency of the particles having a thickness in the range of 0.8 ?m to 1.9 ?m is 90% or more by volume, or the frequency of the particles having a thickness in the range of 0.01 ?m to 0.35 ?m is 90% or more by volume.

Abstract: A glass flake filler of the present invention is composed of glass flakes. The average thickness of the glass flakes is at least 0.1 ?m but less than 0.5 ?m, and the glass flakes include glass flakes having a thickness of at least 0.01 ?m but not more than 2.0 ?m in an amount of at least 90% by mass. A resin composition of the present invention is a resin composition including a thermoplastic resin and a glass flake filler. This glass flake filler is composed of glass flakes, the average thickness of the glass flakes is at least 0.1 ?m but less than 0.5 ?m, and the glass flakes include glass flakes having a thickness of at least 0.01 ?m but not more than 2.0 ?m in an amount of at least 90% by mass.

Abstract: A cosmetic of the present invention contains glass flakes. The glass flakes have a composition including at least 52 mass % of silicon dioxide and 5 mass % or less of alkali metal oxides. The glass flakes have an average thickness of 0.1 to 1.0 ?m, an average particle diameter of 1 to 100 ?m, and an average aspect ratio of 10 or greater. The average aspect ratio is obtained by dividing the average particle diameter by the average thickness. The particle diameter distribution index of the glass flakes is 5.0 or less. The particle diameter distribution index is obtained by dividing D90 by D10, where in the particle size distribution of the glass flakes, D10 is a particle diameter at which the cumulative mass distribution of particle diameters reaches 10% when counted from the smaller side, and D90 is a particle diameter at which the cumulative mass distribution of particle diameters reaches 90% when counted from the smaller side.