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Micropartículas huecas, método para la producción de las mismas, composición de revestimiento y artículo sobre el que se ha formado una película de revestimiento
Micropartículas huecas, método para la producción de las mismas, composición de revestimiento y artículo sobre el que se ha formado una película de revestimiento
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机译：中空微粒，其制备方法，涂料组合物和在其上形成涂膜的制品
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摘要
To provide hollow fine particles having a refractive index suppressed and having excellent alkali resistance, a production process thereof, a coating composition with which a coating film having an antireflection effect and excellent alkali resistance can be formed, and an article which can maintain a high antireflection effect for a long period of time. Hollow fine particles containing SiO 2 as the main component and containing Zr, wherein the Zr content (as calculated as ZrO 2 ) is from 0.1 to 15 parts by mass based on 100 parts by mass of SiO 2 ; a coating composition containing the hollow fine particles and a dispersion medium; an article having a coating film made of the coating composition formed on a substrate; and a process for producing hollow fine particles, which comprises (a) a step of, in a dispersion containing a SiO 2 precursor material, a zirconium compound and core fine particles, precipitating a shell containing SiO 2 as the main component and containing Zr on the surface of each core fine particle to obtain core/shell particles, and (b) a step of dissolving or decomposing the core fine particles of the core/shell fine particles.
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