Patent ID: 9651821
Date: 2017-05-16
CPC Classifications: C08G,C08K,C08L,C09D,G02F,H01L,Y10T

Claim:
1. A surface-modified metal oxide particle material obtained by performing surface modification on a metal oxide particle having an average primary particle diameter of 3 nm or more and 10 nm or less with a surface-modifying material having at least a phenyl group and a group capable of undergoing a crosslinking reaction with a functional group in a silicone resin-forming component, wherein the group capable of undergoing a crosslinking reaction with a functional group in a silicone resin-forming component is a hydrogen atom, wherein the surface-modifying material is a combination of a surface-modifying material containing a phenyl group and a surface-modifying material containing a hydrogen atom, the surface-modifying material containing a phenyl group is one or more kinds selected from the materials having a structure represented by the following formulae (1), (2) and silicone materials having a resin structure (three-dimensional network structure) containing a phenyl group and an alkoxy group, wherein, n is an integer of from 1 to 3, X is selected from a methoxy group, an ethoxy group, a hydroxyl group, a halogen atom, and a carboxy group; and when (4−n) is 2 or more, each X may be the same as or different from every other X, formula (2): wherein a is an integer of from 1 to 100; b is an integer of from 0 to 100; and c is an integer of from 1 to 3; and wherein each of A, B, C and D is one or two or more members selected from the group consisting of a phenyl group and an alkyl group having from 1 to 6 carbon atoms, and at least any one of A and B is a phenyl group; and wherein all of A, B, C, and D may be a phenyl group; and wherein each of the sites constituted of Si.A.B.O and the sites constituted of Si.C.D.O is arbitrary with respect to the position and arrangement and is of a random polymer type; and wherein X is selected from the group consisting of a methoxy group, an ethoxy group, a hydroxyl group, a halogen atom, and a carboxy group, and when c is 2 or more, each X may be the same of different from every other X, and the surface-modifying material containing a hydrogen group is one or more kinds selected from the group consisting of triethoxysilane, dimethylethoxysilane, diethoxymethylsilane, dimethylchlorosilane and ethyldichlorosilane.