Dispersion liquid of core-shell type composite oxide fine particles, process for producing the dispersion liquid, and coating composition containing the fine particles

摘要

Core-shell type composite oxide fine particles are described in which the core particles are oxide fine particles or composite oxide fine particles that do not contain silicon and/or aluminum as main components, and the surface of the core particles is covered with a shell including a composite oxide that contains silicon and aluminum as main components, the shell containing silicon and aluminum in a weight ratio in terms of oxides, SiO₂/Al₂O₃, in the range of 2.0 to 30.0. A dispersion liquid of the core-shell type composite oxide fine particles exhibits very high stability.