Aggregate of spherical core-shell cerium oxide/polymer hybrid nanoparticles and method for producing the same

摘要

The present invention provides an aggregate of spherical core-shell cerium oxide/polymer hybrid nanoparticles, a process for producing the same, and a product such as an anti-reflection film having a high refractive index layer. The present invention relates to an aggregate of spherical core-shell cerium oxide/polymer hybrid nanoparticles in which the core and shell are cerium oxide and a polymer, respectively, and the aggregate is highly concentrated, with a volume fraction of the spherical core-shell cerium oxide/polymer hybrid nanoparticles being at least 32% or higher, the aggregate contains a fixing agent, the aggregate is configured such that the fixing agent fills in voids between the spherical core-shell cerium oxide/polymer hybrid nanoparticles, the aggregate has a uniform distribution of the core-shell cerium oxide/polymer hybrid nanoparticles, which are spherical secondary particles synthesized by the polyol method, and the aggregate has excellent mechanical strength, light transmittance, and UV light-blocking properties; and the present invention further relates a process for producing the same; and an antireflection film and ink having the same.

主权项

1. An aggregate of cerium oxide/polymer nanoparticles for an optical device having a high refractive index,
the cerium oxide/polymer nanoparticles are spherical core-shell cerium oxide/polymer hybrid nanoparticles having a spherical secondary particle formed by assembled cerium oxide primary particles having a size range of 2 nm to 3 nm serving as the core and a crosslinked polymer serving as the shell, wherein 1) the aggregate is highly concentrated, with a volume fraction of the spherical core-shell cerium oxide/polymer hybrid nanoparticles being at least 32%; 2) the aggregate contains a fixing agent made from a resin; 3) the aggregate is configured such that the fixing agent fills in voids between the spherical core-shell cerium oxide/polymer hybrid nanoparticles; 4) the aggregate has a uniform distribution of the spherical core-shell cerium oxide/polymer hybrid nanoparticles; and 5) the aggregate has the mechanical strength resistant to destruction by scraping with a metal rod and no silane coupling agent or surfactant is present on a surface of the core of the spherical core-shell cerium oxide/polymer hybrid nanoparticles.