| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface-decorated metal oxide fine particle having both high refractive index and high transparency.SOLUTION: The surface-decorated metal oxide fine particle is used by being dispersed in resin having an aromatic ring skeleton and is obtained by decorating a surface of a metal oxide fine particle with a surface decoration agent, and has an average primary particle diameter of 4 nm to 15 nm. The metal oxide fine particle contains one or more kind of metal elements selected from a group of zirconium, zinc, iron, copper, titanium, tin, cerium, tantalum, niobium, tungsten, europium and hafnium, where the surface decoration agent is represented by general formula (1). In the formula (1), n is 1 to 3 and Si-X, Si-Xand Si-Xare each independently a functional group which becomes a silanol group by hydrolysis. |
