SURFACE-COATED ALUMINUM OXIDE NANOPARTICLE AND RESIN COMPOSITION THEREOF

摘要

Surface-coated aluminum oxide nanoparticles capable of being uniformly blended into polycarbonate resin in a good dispersed state while maintaining a molecular weight of the polycarbonate resin at a specific level or more. Surfaces of the surface-coated aluminum oxide nanoparticles are coated with a dispersant and a silylation reagent. In a case where a monochromated Al-Ka ray is irradiated onto a sample surface by using an X-ray photoelectron spectroscope, when a surface element composition is calculated from an obtained photoelectron peak area, contents (atm%) of nitrogen atoms, thiol-derived sulfur atoms, and halogen atoms in the surface-coated aluminum oxide nanoparticles are individually 2 or less, and when the surface element composition is calculated from obtained photoelectron peak areas of Al2p and Si2s, a concentration (mol%) of silicon atoms with respect to aluminum atoms is 0.05 to 30.