Composite powder and coloring containing the same
AssigneeShiseido Company, Ltd.
InventorsTeruhiko Hineno, Asa Kimura
Life of this patent
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Abstract
Provided are a composite powder comprising a core particle which is spherical and has a refractive index of from 1.40 to 1.60, and a coating component which is coated on the surface of the core particle in film form and has a refractive index of from 2.00 to 2.90, and a coloring composition containing the composite powder. The composite powder or coloring composition is coated on a coating surface to form a composite powder layer. The composite powder layer causes light interference to exhibit a color on the surface. The composite powder and coloring composition are used in various fields.
Claims20
A composite powder comprising a plurality of composite powder particles, the composite powder particle comprising a spherical core particle having a refractive index of from 1.40-1.60, and a diameter of about 2.0-50.0 μm, and a coating component which is coated in film form on the surface of the core particle and has a refractive index of from 2.00-2.90 the diameters of the composite powder particles being distributed in a ratio of at least 60% in terms of a volume distribution within the range of (X+3)μm wherein X μm is an average diameter of the composite powder particles, whereby the composite powder applied on a substrate produces an interference color.
Dependencies are inferred from the claim text.