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METHOD FOR PRODUCING SURFACE-MODIFIED SILICA NANOPARTICLES, AND SURFACE-MODIFIED SILICA NANOPARTICLES
METHOD FOR PRODUCING SURFACE-MODIFIED SILICA NANOPARTICLES, AND SURFACE-MODIFIED SILICA NANOPARTICLES
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机译:制备表面改性的二氧化硅纳米粒子的方法和表面改性的二氧化硅纳米粒子
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摘要
[Problem] To provide a dispersion containing surface-modified silica nanoparticles highly dispersed in an organic dispersion medium and also having high transparency and storage stability. [Solution] Disclosed is a method for producing surface-modified silica nanoparticles comprising: preparing a first silica nanoparticle dispersion containing silica nanoparticles and an aqueous dispersion medium; replacing the aqueous dispersion medium in the first silica nanoparticle dispersion with an organic dispersion medium comprising at least one selected from cyclic esters or cyclic amides, to obtain a second silica nanoparticle dispersion; and mixing the second silica nanoparticle dispersion with a silane coupling agent represented by the formula (1): (each R 1 is independently a hydrocarbon group of C 1 to C 20 and R 2 is a hydrocarbon group of C 1 to C 3 ), to modify the surface of the silica nanoparticles.
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